Best Free AI PDF Tools in 2026

Almost everyone works with PDFs. A student downloads a lecture as a PDF. A job seeker sends a CV as a PDF. A small business sends an invoice as a PDF. A reader downloads an e-book as a PDF. And then the problems start. The PDF is 200 pages long, and you need one answer from page 143. You need to merge five PDFs into one. You need to change one wrong word. You need to sign a form. You need to turn a PDF into a Word file so you can edit it. Doing all of that by hand takes hours.

In 2026, free AI PDF tools can do most of it in minutes. You upload a PDF and ask the AI a question, and it answers from the document. You can ask for a summary of a 100-page report. You can edit text, merge files, compress a large PDF so you can email it, and convert it to Word, Excel, or images. Some of these tools are completely free. Some give you a small free allowance every day or every month. A few only look free, and we will tell you which ones.

This guide looks at the best free AI PDF tools in 2026. Every tool in this list has something you can use for free. We will explain what each tool does, what its free plan gives you, how to use it step by step, who it is best for, and what its honest limits are. We will not hide the limits. A free plan always has limits, and it is better to know them before you start.

First, one important difference. This article is about two kinds of tools. The first kind is AI PDF tools. They let you chat with a PDF, ask it questions, and get a summary. ChatPDF, PDF.ai, and PDFgear Copilot are in this group. The second kind is classic PDF tools. They merge, split, compress, convert, edit, and sign PDFs, but they have no AI at all. Sejda, PDF24, and PDFescape are in this group. They are still in this guide, because you need both kinds. An AI chat cannot merge two PDFs. A merge tool cannot answer a question about page 143. Use one of each, and you can do almost any PDF job for free.

This article is for you if you read long PDFs, study from PDF notes, send invoices or CVs, or work with forms and contracts, and you want to do it without paying. You do not need any technical skills for most of these tools. All of them work in a web browser, and most of them take only a few minutes to set up. One tool, PDFgear, also has a free desktop app for Windows and Mac. We explain that clearly in its section.

One important note before we start. Free plans change. A company can change its free plan at any time. The limits in this article were checked in November 2026, but you should always check the official site for the latest price and the latest free plan details before you decide.

How to Choose the Right Free PDF Tool

There are many PDF tools. You do not need all of them. You need the right one or two. Before you sign up for anything, ask yourself four simple questions.

1. Do you need AI chat, or just PDF jobs? If you need to understand a long PDF, ask it questions, or get a summary, you need an AI tool like ChatPDF, PDF.ai, or PDFgear Copilot. If you only need to merge two files, split a PDF, compress it, or convert it to Word, a classic tool like PDF24 or iLovePDF is faster and has bigger free limits. Most people need one of each.

2. How big is your PDF? Free plans are measured in pages, file size, and tasks per day. ChatPDF's free plan stops at 120 pages per PDF. iLovePDF's free OCR stops at files of 15 MB. Sejda's free plan stops at 200 pages or 50 MB. If your PDF is a 500-page textbook, check the page limit first. A tool that is perfect for a 10-page form can be useless for a 500-page book.

3. Is it a free plan or just a free trial? This is the most important question, and it is where many people get caught. A free plan resets every day or every month and never expires. A free trial is a fixed amount that runs out once and never comes back. In this guide, 11 tools have a permanent free plan. One tool, Foxit PDF Editor, has only a 14-day trial for the editor itself. It is still useful, because every free Foxit account gets 300 AI credits a month forever, but do not build your routine on the editor unless you are ready to pay.

4. Do you need to edit the text that is already in the PDF? Many free tools can add text, comments, and highlights, but they cannot change the words that are already there. Real text editing is a paid feature in Smallpdf, iLovePDF, and Adobe. Sejda and PDFgear are the exceptions. They let you edit existing text for free. If you need to fix a typo in a contract, pick one of those two.

Here is a simple rule. Start with ChatPDF for reading and PDFgear for editing. That is enough for most people. Add PDF24 for merging and compressing, because it is free with no limits. Use them for two weeks. Then decide what is missing. Most people find that two or three free tools cover everything they need. You do not need to pay for anything until you chat with PDFs for hours every week, or you need a feature that is not on any free plan.

In This Guide

1. Smallpdf
2. iLovePDF
3. Adobe Acrobat Online
4. PDFgear
5. Sejda
6. PDF24 Tools
7. ChatPDF
8. PDF.ai
9. Foxit PDF Editor Online
10. Soda PDF
11. PDFescape
12. Canva PDF Editor

Best Free AI PDF Tools at a Glance

Free plans change often, so check the official website of each tool for current free limits before you start a big project.

1. Smallpdf

Smallpdf is one of the most popular PDF websites in the world. It gives you more than 30 tools in one place. You can compress a PDF, merge several PDFs into one, split a PDF, convert PDF to Word or Word to PDF, rotate pages, delete pages, add text and comments, and sign a document. Everything runs in your browser. You do not need to install anything, and you do not need an account for your first few tasks.

Smallpdf also has AI tools. You can chat with a PDF, ask it questions, get a summary, translate a PDF, and generate questions from a document. On the free plan, these AI tools work, but they are limited. The official page says the free AI limit is a file of 50 MB and a document of 25,000 to 35,000 words. That covers most reports, essays, and contracts. A very long book will be too big for the free AI. On Pro, the AI is unlimited, with a limit of 100,000 words per document.

The free plan is small but real. You get about 2 tasks a day, shared across all the tools. That number is not printed on the official pricing page, but it is reported the same way by many independent reads of that page, and it matches how the site behaves. After 2 tasks, the site asks you to wait until tomorrow or to start a trial. The free plan includes basic compression, basic conversions, merge, split, rotate and delete pages, annotate, and the PDF Reader. What it does not include is Edit Text, OCR, Strong Compression, batch processing, and unlimited downloads. Those are Pro only.

One change to know. E-signing no longer lives inside Smallpdf. It now runs through a separate Sign.com account. A free Sign.com account lets you sign 2 documents a month. That is enough for one form a week, but not for a business that signs every day.

Pro costs $15 a month if you pay monthly, or $10 a month if you pay for a year at once ($120 a year). There is a 7-day free trial, but it asks for your payment details first, so remember to cancel it if you do not want to pay. The price figures on the official page did not render on our direct check, so they come from three separate reads of that page in October 2026. Check the official site before you buy.

Smallpdf is a good choice if you do a little bit of everything with PDFs. Two tasks a day is enough for most students and casual users. If you need to process 20 PDFs in one afternoon, the free plan will stop you, and PDF24 or PDFgear is a better choice.

Key Features:

• More than 30 PDF tools in one place: compress, merge, split, convert, rotate, delete, annotate, sign
• AI chat with PDF, AI summarizer, AI translate, and AI question generator, all limited on the free plan
• Works in the browser on any device, with no install
• Clean, simple design that is easy for beginners
• PDF Reader and basic tools work without an account

Best for: A student or casual user who does a few different PDF jobs a week and wants one simple site for all of them

Free plan: Free plan with about 2 tasks a day across all tools, basic compression and conversions, merge, split, rotate and delete pages, annotate, and PDF Reader. Free AI is limited to files of 50 MB and documents of 25,000 to 35,000 words. E-signing gives you 2 documents a month through Sign.com. Edit Text, OCR, Strong Compression, batch processing, and unlimited downloads need Pro. No credit card needed for the free plan. Pro costs $15 a month, or $10 a month billed yearly. Check the official site for current free limits and prices.

How to Use Smallpdf Step by Step:

1. Go to smallpdf.com and pick a tool, for example Compress PDF or Merge PDF.
2. Upload your PDF file. It must fit in the free limits, and you must have a free task left today.
3. Wait a few seconds while Smallpdf processes your file. For AI chat, click AI PDF, upload your PDF, and type your question.
4. Download the result. Remember, you get about 2 free tasks a day, so use them on your most important files.
5. For signing, you will be asked to create a free Sign.com account. That gives you 2 free signed documents a month.

Watch out for: The 2-tasks-a-day limit is the real limit. After 2 tasks, the site stops you until tomorrow. And the free AI is limited to documents of 25,000 to 35,000 words, so a very long book will not work. Do not start the 7-day Pro trial unless you remember to cancel it, because it asks for payment details first.

2. iLovePDF

iLovePDF is a fast, simple PDF website with more than 25 tools. You can merge PDFs, split a PDF, compress a PDF, convert PDF to Word, Excel, PowerPoint, or JPG, convert Office files to PDF, edit a PDF, sign a PDF, redact text, and compare two PDFs. The homepage shows every tool as a clear card, so you can find the one you need in seconds. It works in the browser, with no install and no account needed for basic use.

iLovePDF's free plan is different from Smallpdf's. It has no daily task counter. Instead, every tool has its own limit per task. Merge lets you combine up to 25 files of 100 MB. Compress lets you compress 2 files of 200 MB. Split lets you split 1 file of 100 MB. Office to PDF, PDF to Word, Excel, or PowerPoint, and OCR let you process 1 file of 15 MB. PDF to JPG lets you convert 2 files of 25 MB. Sign lets you sign 3 files of 50 MB. Edit lets you edit 1 file of 100 MB. Those limits are generous for normal files, but the 15 MB cap on OCR and Office conversion will catch you if your file is large.

Now the honest part about AI. iLovePDF has AI tools, but they are effectively paid-only. The official pricing page marks the Standard AI Summarizer and Standard AI Translate as "No" for the free plan. The Advanced AI Summarizer and Translate run on AI credits, and Premium includes 2,000 AI credits. The Advanced Summarizer can handle up to 67 pages. There is no free AI allowance listed on the pricing page. So if you want AI on iLovePDF, you need Premium.

Premium costs $9 a month if you pay monthly, or $5 a month if you pay for a year at once ($60 a year). It removes the per-task limits, removes ads, adds the desktop and mobile apps, adds digital signatures, workflows, and PDF/A, and includes the 2,000 AI credits. Prices vary by region. Students and academics can get 1 year of Premium free, which is a good deal if you study.

iLovePDF is a good choice if you want speed. There is no daily counter, so you can merge a file, then split another file, then compress a third file, all in one sitting, as long as each file fits its own size cap. If you need AI summaries, though, this is not the free tool for you. Use ChatPDF or PDFgear Copilot instead.

Key Features:

• More than 25 PDF tools: merge, split, compress, convert, edit, sign, redact, compare, OCR
• No daily task counter on the free plan, only per-tool size limits
• Works in the browser with no account, with ads on the free plan
• Clean tool cards that make it easy to find the right tool fast
• Desktop and mobile apps on Premium, with workflows and digital signatures

Best for: Someone who wants to do several quick PDF jobs in one sitting without a daily task limit, and who does not need AI

Free plan: Free plan with no daily task counter, but per-tool limits: Merge 25 files / 100 MB, Compress 2 files / 200 MB, Split 1 file / 100 MB, Office to PDF and PDF to Word, Excel, or PowerPoint and OCR 1 file / 15 MB, PDF to JPG 2 files / 25 MB, Sign 3 files / 50 MB, Edit 1 file / 100 MB. Basic OCR is included on free. AI Summarizer and AI Translate are NOT free — they need Premium, which includes 2,000 AI credits. Premium costs $9 a month, or $5 a month billed yearly. Students and academics can get 1 year of Premium free. Check the official site for current free limits and prices.

How to Use iLovePDF Step by Step:

1. Go to ilovepdf.com and click the tool you need, for example Merge PDF or Compress PDF.
2. Upload your file. Check the size cap for that tool first. OCR and Office conversion stop at 15 MB on the free plan.
3. Pick your settings. For Merge, drag the files into the right order. For Compress, pick the compression level.
4. Click the big button to process your file, then download the result.
5. If you need the same tool again, you can use it right away. There is no daily counter, but each task has its own size cap.

Watch out for: The 15 MB cap on OCR and Office conversion is the limit that catches most people. A scanned 30 MB PDF will not convert on the free plan. And do not expect free AI here. The AI Summarizer and AI Translate are Premium only, even though the homepage talks about AI. If you need a free AI summary, use ChatPDF instead.

3. Adobe Acrobat Online

Adobe Acrobat Online is the official free PDF service from Adobe, the company that invented the PDF. It gives you more than 25 browser tools. You can annotate a PDF, add comments and highlights, fill and sign a form, add an e-signature, merge PDFs, split a PDF, compress a PDF, convert files, and delete or reorder pages. Everything runs in your browser. You do not need to install anything.

The free plan works in two ways. Without an account, you can use the browser tools for "limited use". Adobe does not publish the number. With a free Adobe account, you get unlimited use of the browser tools. That is the important trick. Sign up for a free Adobe account, and the limits mostly go away for the basic tools. You may still need to sign in to save or download in some flows. Compress works on files up to 2 GB, which is far bigger than any other free tool in this guide.

What the free plan does not include is editing the text that is already in a PDF, OCR, and full conversion. Those need a paid plan or a 7-day trial. The free tools can add text, comments, and highlights, but they cannot change the words that are already printed on the page. If you need to fix a typo in a contract, use Sejda or PDFgear instead.

Now the AI. Acrobat AI Assistant lets you chat with a PDF, get a summary, and get answers with citations. It is NOT included in the free tools, and it is NOT included in Acrobat Pro either. It is a paid add-on. The exact add-on price could not be verified, because Adobe's pages report different prices, $1.99 a month and $4.99 a month, so we will not print one figure here. The AI Assistant IS included in Acrobat Studio, the new top tier that Adobe launched in 2026. Acrobat Studio bundles Pro, the AI Assistant, PDF Spaces, and Adobe Express Premium. All Acrobat and Reader users get a small number of complimentary AI trial requests, so you can test the AI a few times for free.

The paid prices are Standard $14.99 a month, Pro $19.99 a month, and Studio $24.99 a month, on an annual plan billed monthly. Pro and Studio have a 7-day free trial. Standard has no trial. Our direct check of Adobe's pricing page was blocked with a 403 error, so these prices come from several reads of Adobe's own page in October and November 2026. Check the official site before you buy. Also note that cancelling an annual plan billed monthly early can cost up to half of the remaining commitment, so read the terms before you sign up.

Adobe Acrobat Online is a good choice if you want the most trusted name and the biggest file limits. The free account trick makes the basic tools effectively unlimited, and 2 GB compression is unmatched. But if you want free AI, this is not the tool. The AI is a paid add-on.

Key Features:

• More than 25 free browser tools from Adobe, the company that invented the PDF
• Annotate, comment, highlight, fill and sign, e-sign, merge, split, compress up to 2 GB, convert, delete and reorder pages
• A free Adobe account unlocks unlimited use of the browser tools
• AI Assistant for chat and summaries, as a paid add-on or inside Acrobat Studio
• Works in the browser with no install, on any device

Best for: Anyone who wants the most trusted PDF tools with the biggest file limits, and who is happy to make a free Adobe account

Free plan: Free plan with more than 25 browser tools. Without an account, use is limited. With a free Adobe account, use of the browser tools is unlimited. Free includes annotate, comments, highlights, Fill & Sign, e-signatures, merge, split, compress up to 2 GB, convert, and delete or reorder pages. Editing existing text and images, OCR, and full conversion need a paid plan. The AI Assistant is NOT free. It is a paid add-on, included in Acrobat Studio. Standard costs $14.99 a month, Pro $19.99 a month, and Studio $24.99 a month, on an annual plan billed monthly. Check the official site for current free limits and prices.

How to Use Adobe Acrobat Online Step by Step:

1. Go to adobe.com/acrobat/online and pick a tool, for example Edit PDF or Compress PDF.
2. Create a free Adobe account and sign in. This unlocks unlimited use of the browser tools.
3. Upload your PDF file. For compress, files can be up to 2 GB.
4. Make your changes. Add text, comments, highlights, or a signature. Merge, split, or compress as needed.
5. Download the result. If the tool asks you to sign in to save, you are already signed in with your free account.

Watch out for: Do not expect to edit existing text for free. Adobe's free tools can add new text, but they cannot change the words already in the PDF. And do not expect free AI. The AI Assistant is a paid add-on, and its price is reported differently on different Adobe pages, so check the official site. If you only need to test the AI a few times, use the complimentary trial requests, then switch to ChatPDF or PDFgear for free AI.

4. PDFgear

PDFgear is the most generous tool in this whole guide. It is a completely free PDF editor, with no paid tier for the editor at all. There is no account, no watermark, no ads, and no daily quota. You can edit text and images, annotate, merge, split, reorder pages, convert PDF to Word, Excel, PowerPoint, images, or text, and convert files back to PDF. It has OCR in more than 30 languages, so it can read text from a scanned page. It can fill forms, add an e-signature, and compress a PDF. Everything in the editor is free.

PDFgear works in two ways. There is a desktop app for Windows and Mac, and there are free online tools in your browser. The desktop app has no file-size cap. The online tools have a limit of 50 MB per file, which is still generous. Most of the desktop work happens on your own computer, so your files stay private. The AI features and some advanced conversions run on PDFgear's cloud servers. Your file is uploaded, processed, and deleted after.

The AI feature is called PDFgear Copilot. It lets you chat with a PDF, ask it questions, get a summary, and rewrite or proofread text. It is powered by GPT-3.5. It is free, and there is no published usage cap. We could not find any number for how many questions you can ask a day, which is unusual. Most tools publish a cap. PDFgear does not. That makes it the best free AI chat in this guide, as long as the free offer lasts.

One honest caveat. The company that makes PDFgear says most features will stay free, but advanced options like AI, high-accuracy OCR, and heavy conversions may become paid later, with advance notice. There is no timeline for that. So the correct way to say it is that PDFgear is completely free for now. Use it while it is free, and do not be surprised if a paid tier appears one day. The only priced product from the same company is a separate sister site, eSignGear Premium, at $10 a month or $84 a year. That is not the PDF editor.

PDFgear is the best free choice in this guide for editing and for AI chat. If you only pick one tool, pick this one. It does almost everything, it costs nothing, and it has no daily limit to hit.

Key Features:

• Completely free PDF editor with no paid tier, no account, no watermark, no ads, and no daily quota
• Edit text and images, annotate, merge, split, reorder, convert, OCR in more than 30 languages, fill forms, e-sign, compress
• PDFgear Copilot: free AI chat with PDF, summaries, Q&A;, rewrite and proofread, powered by GPT-3.5
• Desktop app for Windows and Mac with no file-size cap, plus free online tools up to 50 MB per file
• Most desktop work happens on your computer, so your files stay private

Best for: Anyone who wants a full PDF editor and a free AI chat, with no limits and no account

Free plan: Free forever plan with everything in the editor free. No account, no watermark, no ads, no daily quota. Desktop has no file-size cap. Online tools have a 50 MB limit per file. PDFgear Copilot is free with no published usage cap. There is no paid tier for the editor. The company says advanced features may become paid later, with advance notice, so it is completely free for now. Check the official site for current details.

How to Use PDFgear Step by Step:

1. Go to pdfgear.com and download the free desktop app for Windows or Mac, or use the free online tools in your browser.
2. Open your PDF file. No account and no sign-up are needed.
3. Edit the text or images, add notes, merge or split pages, or convert the file to Word or Excel.
4. To use the AI, open Copilot, upload your PDF, and type your question or ask for a summary.
5. Save or export your file. There is no watermark on the output, and no daily limit to worry about.

Watch out for: The AI and some advanced conversions run on PDFgear's cloud servers, so your file is uploaded for those jobs. Most other work is local on your computer. And remember, the company says advanced features may become paid later. Enjoy the free plan now, but do not build a business on the promise that it will stay free forever.

5. Sejda

Sejda is a clean, simple PDF editor that runs in your browser. It has more than 30 tools. You can edit a PDF, compress it, merge files, split a PDF, delete pages, crop pages, fill and sign forms, convert PDF to Word or images, add a watermark, protect a PDF with a password, unlock a PDF, and redact text. It also has OCR, so it can read text from a scanned page.

What makes Sejda special is real text editing. Most free tools can only add new text on top of a PDF. Sejda lets you click on the words that are already in the PDF and change them, and it keeps the original font. That is rare for a free tool. Only PDFgear does the same in this guide. If you need to fix a typo in a contract or change a date on a form, Sejda can do it for free.

The free plan gives you 3 tasks an hour on the web. The counter resets on the clock hour, not 60 minutes after your first task. So if you use 3 tasks at 10:50, you get 3 more tasks at 11:00. Files can be up to 200 pages or 50 MB, and you can process 1 file per task. OCR works on up to 10 pages per task, and conversions work on up to 20 pages per task. The free desktop app gives you 3 tasks a day, with the same 50 MB and 200-page caps, compress up to 100 MB, and merge up to 30 files or 50 pages. Your files are deleted from Sejda's servers after 2 hours.

Sejda has no AI features. There is no chat with PDF, no AI summarizer, and no AI assistant on its pricing page or tool pages. Do not expect AI here. Sejda is in this guide because it is one of the best free editors, not because it has AI. Use ChatPDF or PDFgear Copilot for AI, and Sejda for real text edits.

The paid plans are simple. A Web Week Pass costs $5 one time for 7 days, with no auto-renew. Web Monthly costs $7.50 a user a month. Desktop plus Web Annual costs $63 a user a year. Paid plans remove the task limit, raise uploads to 500 MB, raise OCR to 100 pages, add batch processing, and allow up to 21 minutes per task. Prices can show in euros in some regions.

Sejda is a good choice if you need to edit text in a PDF for free, a few times a day. Three tasks an hour is enough for most people. If you need to process 20 files in one hour, the free plan will stop you, and PDF24 is a better choice.

Key Features:

• More than 30 PDF tools in the browser: edit, compress, merge, split, delete, crop, fill and sign, convert, watermark, protect, redact
• Real text editing that keeps the original font, which most free tools cannot do
• OCR on up to 10 pages per task on the free plan
• Files deleted after 2 hours, so your documents do not stay on the server
• Free desktop app with 3 tasks a day

Best for: Someone who needs to fix or change the text already inside a PDF, for free, a few times a day

Free plan: Free plan with 3 tasks an hour on the web, files up to 200 pages or 50 MB, 1 file per task, OCR up to 10 pages per task, and conversions up to 20 pages per task. The free desktop app gives you 3 tasks a day. Free includes real text editing, merge, split, compress, convert, OCR, forms, sign, protect, unlock, watermark, and redact. Files are deleted after 2 hours. There is no AI feature. A Web Week Pass costs $5 for 7 days, Web Monthly costs $7.50 a user a month, and Desktop plus Web Annual costs $63 a user a year. Check the official site for current free limits and prices.

How to Use Sejda Step by Step:

1. Go to sejda.com and pick a tool, for example Edit PDF or Merge PDF.
2. Upload your PDF file. It must be under 200 pages or 50 MB, and you must have a free task left this hour.
3. Click on the text you want to change, and type the new words. Sejda keeps the original font.
4. Add a signature, a watermark, or a password if you need one, then click Apply Changes.
5. Download the result. Your file is deleted from Sejda's servers after 2 hours. Remember, you get 3 free tasks an hour, and the counter resets on the clock hour.

Watch out for: The 3-tasks-an-hour limit is the real limit. If you use 3 tasks at 10:50, you must wait until 11:00, not 11:50. And OCR only works on 10 pages per task on the free plan, so a long scanned book will not work. Also, do not expect AI. Sejda has no chat with PDF and no AI summarizer. Use it for editing, and use ChatPDF for AI.

6. PDF24 Tools

PDF24 Tools is a free PDF website with more than 30 tools. You can merge PDFs, split a PDF, compress a PDF, convert files, edit a PDF, sign a PDF, protect a PDF with a password, unlock a PDF, rotate pages, remove pages, extract pages, add page numbers, add a watermark, run OCR, redact text, and compare two PDFs. It also has a free desktop app, PDF24 Creator, for Windows, which works fully offline.

The free plan is the simplest in this guide. The official FAQ says the tools are available to all users, including companies, free of charge and without restriction. There is no account, no watermark, no daily or task cap, and no paid consumer tier at all. The site is funded by discreet ads. Your files are deleted from its EU servers within 1 hour, and transfers are encrypted. One review cites a limit of about 100 MB per file on the web tools, but the official FAQ does not state a file-size limit, so we will not print one as a fact.

PDF24 has no AI features. There is no chat with PDF, no AI summarizer, and no AI assistant. Its feature set is classic tools plus OCR. That is why it is in this guide as a workhorse, not as an AI tool. When you need to merge 10 PDFs, compress a 50 MB file, or convert 20 files in one afternoon, PDF24 will not stop you. No other free tool in this guide gives you that.

There is no paid plan for consumers. PDF24 makes money from business products only, such as a paid REST API, server licences, and OEM licensing. The site has been in operation since 2006, so it is one of the oldest free PDF sites on the internet.

PDF24 is a good choice if you do a lot of PDF jobs and you hate limits. It is the tool to use when Smallpdf stops you after 2 tasks, or Sejda stops you after 3 tasks an hour. Keep it open in a second tab, and use it for all the heavy lifting.

Key Features:

• More than 30 free PDF tools: merge, split, compress, convert, edit, sign, protect, unlock, rotate, remove pages, extract pages, OCR, redact, compare
• Free of charge and without restriction, with no account, no watermark, and no daily or task cap
• Files deleted within 1 hour from EU servers, with encrypted transfers
• Free desktop app, PDF24 Creator, for Windows, which works fully offline
• In operation since 2006, one of the oldest free PDF sites

Best for: Anyone who processes many PDFs a day and wants a tool that never says "you have reached your limit"

Free plan: Free plan with no limits at all. No account, no watermark, no daily or task cap, and no paid consumer tier. All tools are free, including merge, split, compress, convert, edit, sign, OCR, and redact. Files are deleted within 1 hour. There is no AI feature. Check the official site for current details.

How to Use PDF24 Tools Step by Step:

1. Go to tools.pdf24.org and click the tool you need, for example Merge PDF or Compress PDF.
2. Upload your files. There is no daily cap, so you can process as many files as you need.
3. Pick your settings. For Merge, drag the files into the right order. For Compress, pick the quality level.
4. Click the button to process your files, then download the result.
5. If you work with PDFs every day, download the free PDF24 Creator desktop app for Windows. It works fully offline, with no upload at all.

Watch out for: PDF24 has no AI. It cannot chat with a PDF, answer questions, or write a summary. Use it for the heavy PDF jobs, and use ChatPDF or PDFgear Copilot when you need AI. Also, because there is no account, there is no history. If you close the tab, your work is gone, so download your result right away.

7. ChatPDF

ChatPDF is the most popular chat-with-PDF tool in the world. You upload a PDF, and then you ask it questions in plain language. It answers from the document, with citations that show you which page the answer came from. You can ask for a summary, ask what a table means, ask for the main points of a chapter, or ask it to explain a difficult paragraph in simple words. It also has a Summary tool, an AI Writer, an AI Detector, flashcards, slides, and a Research tool. It now accepts Word, PowerPoint, and text files too, not only PDF.

The free plan gives you 2 documents a day, up to 120 pages per PDF, with a file-size limit of 10 MB. You do not need to sign up to start, but you need a free account to save your chat history. The free plan also limits how many questions you can ask each day. Different sources report different numbers for that limit, 20 questions a day in one read and 50 in others, so we will not print one number as a fact. The safe way to say it is that the free plan gives you a small daily question limit. Check the pricing page for the current number before you plan a big job around it.

ChatPDF cannot merge, edit, convert, or sign a PDF. It is chat with PDF only. That is fine, because that is what it is for. If you need to edit the PDF, use PDFgear or Sejda after you have understood it with ChatPDF.

Plus costs $19.99 a month. The yearly price is reported differently by different sources, $119.99 a year in some and $139.99 a year in others, so check the site before you buy. Plus gives you unlimited documents and questions, up to 2,000 pages per PDF, a 32 MB file limit, GPT-4o, multi-PDF chats, and bundled access to Jenni AI. One source notes that the Plus price in dollars is not published on the public landing page and only appears at checkout, which explains why the numbers vary.

ChatPDF is the best free choice in this guide for reading and understanding a PDF. Two documents a day is enough for most students and researchers. If you read 5 papers a day, the free plan will stop you, and PDF.ai or PDFgear Copilot is a better choice.

Key Features:

• Chat with any PDF and get answers with citations that show the source page
• Summary, AI Writer, AI Detector, flashcards, slides, and Research tools built in
• Works with Word, PowerPoint, and text files too, not only PDF
• No sign-up needed to start, but a free account saves your chat history
• Used by more than 10 million users, including students at Harvard, Cambridge, Oxford, and Stanford

Best for: A student or researcher who needs to read and understand long PDFs fast, with answers that show the source page

Free plan: Free plan with 2 documents a day, up to 120 pages per PDF, and a 10 MB file-size limit. No sign-up needed to start. A free account is needed to save chat history. There is a small daily question limit, reported as 20 or 50 by different sources, so check the pricing page for the current number. ChatPDF cannot merge, edit, convert, or sign PDFs. It is chat with PDF only. Plus costs $19.99 a month, with unlimited documents and questions, up to 2,000 pages per PDF, and a 32 MB file limit. Check the official site for current free limits and prices.

How to Use ChatPDF Step by Step:

1. Go to chatpdf.com and click Upload, or drag your PDF file into the box.
2. Wait a few seconds while ChatPDF reads your document. It works best on PDFs under 120 pages and 10 MB.
3. Type your question in the chat box, for example "Summarize this paper in 5 bullet points" or "What does table 2 show?"
4. Read the answer and click the citation to see the exact page it came from. Ask a follow-up question if you need more detail.
5. Sign up for a free account if you want to save your chat history. Remember, you get 2 free documents a day, so use them on your most important PDFs.

Watch out for: The 120-page limit is the real limit. A 300-page textbook will not fit on the free plan. Split it into parts, or use PDFgear Copilot instead. And do not expect ChatPDF to edit or merge your PDF. It only chats. Use a second tool for the editing jobs.

8. PDF.ai

PDF.ai is an AI tool that turns PDFs into structured data. You upload a PDF and chat with it, just like ChatPDF, but PDF.ai is built for more than chatting. It can parse a document, extract custom fields, and split content intelligently, so you can build a workflow around your PDFs. It also has a developer API for apps that need to read PDFs automatically. The homepage now leads with the API, but the chat product still works the same way.

The free plan is called Hobby, and it costs $0 forever. It gives you 1 PDF upload a month, 100 questions a month, a maximum file size of 10 MB, OCR capped at 2 pages per file, and the basic AI model. That is very tight. One upload a month means you can only chat with one new PDF each month. But the 100 questions a month are enough to ask a lot about that one PDF. There is also a separate developer API free tier that gives you 200 credits a month with no card required.

The paid chat plans, billed yearly, are Pro at $10 a month, with 100 uploads a month, 1,000 questions a month, OCR up to 10 pages per file, and a 50 MB maximum file size. Ultimate costs $20 a user a month billed yearly, with unlimited uploads and questions, the advanced model, and OCR up to 50 pages per file. Enterprise costs $30 a user a month billed yearly, with OCR up to 100 pages per file and a 100 MB maximum. Annual billing saves 25%, according to PDF.ai. The monthly-billed prices could not be verified, so we will not print them. The API has separate paid plans from $49 a month.

PDF.ai does not merge, edit, convert, or sign PDFs in its chat product. It is chat with PDF plus a developer API for parsing and extracting. It is SOC 2 certified, which means it follows strict rules for handling your data.

PDF.ai is a good choice if you need to pull data out of a PDF, not just read it. For example, if you have 100 invoices and you need the date and total from each one, PDF.ai can extract those fields. For normal reading, ChatPDF gives you more free documents a day. For data work, PDF.ai is the better tool.

Key Features:

• Chat with a PDF and get answers, summaries, and document parsing in one place
• Turns PDFs into structured data: parse documents, extract custom fields, split content intelligently
• Developer API for apps that need to read PDFs automatically, with a free tier of 200 credits a month
• SOC 2 certified for data handling
• Works in the web app, with no install

Best for: A business user or developer who needs to extract data from PDFs, or someone who wants to ask many questions about one important PDF a month

Free plan: Free Hobby plan with 1 PDF upload a month, 100 questions a month, a maximum file size of 10 MB, OCR capped at 2 pages per file, and the basic AI model. The developer API has a separate free tier of 200 credits a month, with no card required. PDF.ai cannot merge, edit, convert, or sign PDFs. Pro costs $10 a month billed yearly, Ultimate costs $20 a user a month billed yearly, and Enterprise costs $30 a user a month billed yearly. Check the official site for current free limits and prices.

How to Use PDF.ai Step by Step:

1. Go to pdf.ai and create a free account.
2. Upload your PDF file. It must be under 10 MB, and it is your one free upload for the month, so pick your most important PDF.
3. Type your question in the chat box, or ask for a summary. You get 100 questions a month on the free plan.
4. If you need data, use the parsing tools to extract the fields you need, for example dates, totals, or names.
5. Download your results. Remember, you only get 1 upload a month on the free plan, so do not waste it on a test file.

Watch out for: One upload a month is very tight. If you upload the wrong PDF, you must wait until next month or pay for Pro. And OCR only works on 2 pages per file on the free plan, so a scanned book will not work. Use PDF.ai for one important PDF a month, and use ChatPDF for your daily reading.

9. Foxit PDF Editor Online

Foxit PDF Editor is a professional PDF editor, and it calls itself the number one alternative to Adobe Acrobat. It lets you create, edit, sign, and manage PDF documents on desktop, cloud, and mobile. You can edit text and images, merge and split files, convert PDF to and from Word, Excel, and PowerPoint, run OCR, redact sensitive text, add an e-signature, and use the AI Assistant to ask questions, summarize, translate, and extract data from a PDF.

Now the honest part. The Foxit PDF Editor has no free plan. What it offers is a 14-day free trial of the full Editor+, on desktop, web, and mobile, with no credit card required. The trial does not auto-renew. After 14 days, your account falls back to the free Foxit PDF Reader, which can only view, annotate, fill forms, and fill and sign. It cannot edit, convert, run OCR, or redact. So do not plan your work on the editor unless you are ready to pay after 14 days.

But there is a genuinely free AI part. Every free Foxit account gets 300 AI Assistant credits a month, forever. You can use those credits in the Reader, in Workspace, and in the Editor, during the trial and after it. On supported devices, local AI uses no credits at all. That means you can ask the AI questions about a PDF for free every month, even after the editor trial ends. Foxit also offers free one-off online tools for conversions and merges, separate from the Editor.

The paid prices are PDF Editor at $10.99 a user a month on annual billing, or $129.99 a user a year prepaid. PDF Editor+ costs $159.99 a user a year, or $13.99 a user a month on the annual plan, and it includes Foxit eSign with 150 envelopes a year. A perpetual licence for Editor 14 costs $209.99 once. The AI Assistant add-on costs $49.99 a year for 2,000 credits a month. Editor+ includes the AI Assistant.

Foxit is a good choice if you want a professional editor and you are ready to pay, or if you only want the 300 free AI credits a month. For a completely free editor, use PDFgear instead.

Key Features:

• Professional PDF editor: create, edit, sign, and manage documents on desktop, cloud, and mobile
• Edit text and images, merge and split, convert to and from Office files, OCR, Smart Redact, eSign
• AI Assistant that answers questions, summarizes, translates, and extracts data from a PDF
• 300 free AI Assistant credits a month, forever, for every free account
• Free one-off online tools for conversions and merges, separate from the Editor

Best for: A professional who wants a cheaper alternative to Adobe Acrobat, or anyone who wants 300 free AI credits a month

Free plan: Trial only for the editor. You get a 14-day free trial of the full Foxit PDF Editor+, with no credit card required and no auto-renew. After 14 days, you fall back to the free Foxit PDF Reader, which can only view, annotate, fill forms, and fill and sign. Every free account gets 300 AI Assistant credits a month, forever, usable in the Reader, Workspace, and the Editor. PDF Editor costs $10.99 a user a month on annual billing, or $129.99 a user a year. Editor+ costs $159.99 a user a year. The AI Assistant add-on costs $49.99 a year for 2,000 credits a month. Check the official site for current free limits and prices.

How to Use Foxit PDF Editor Online Step by Step:

1. Go to foxit.com and click Try It Free to start the 14-day trial of PDF Editor+. No credit card is needed.
2. Upload your PDF file. On the web trial, files can be up to 10 MB.
3. Edit the text, merge or split pages, convert the file, or run OCR while the trial lasts.
4. To use the AI, open the AI Assistant and type your question or ask for a summary. You get 300 free AI credits a month, even after the trial ends.
5. After 14 days, the editor stops working unless you pay. Your account falls back to the free Reader, and your 300 monthly AI credits keep working.

Watch out for: The editor is a trial, not a free plan. After 14 days, you cannot edit, convert, or run OCR unless you pay. Do not start the trial until you have real work to do with it. And remember, the 300 free AI credits a month are the real free offer here. Use them every month, even if you never pay for the editor.

10. Soda PDF

Soda PDF is a full PDF software with a desktop app and free online tools. The desktop app, Soda PDF 15, has a fresh interface and a stronger engine. It lets you create, convert, edit, fill and sign, secure, and manage PDFs. The toolbar shows Edit, Page, Comment, Secure, Forms, E-Sign, OCR, Translate, and AI Assistant. It works on Windows, and there is a web version too.

The free quick tools are permanent, not a trial, but they are narrow. You can merge, compress, split, convert PDF to Word, Excel, PowerPoint, JPG, PNG, or HTML, and back again, e-sign, add a watermark, protect, rotate, and unlock a PDF, all for free, but only within the limit of up to 2 files per day or a file size of 3 MB maximum. The official wording is ambiguous, because it says "or", so treat it as a small allowance either way. You may also need to create a free account to download the result in some flows.

What is NOT free is the important part. Edit PDF, OCR, forms, the Reader, the AI summarizer, translation, and Chat with PDF are all paid only. You can try editing, but downloading, printing, emailing, or saving the result requires a paid plan. So Soda PDF has no free chat with PDF. The AI features are Chat with PDF and the AI summarizer, and they give you 10 questions on Standard, 50 on Pro, and 200 on Business. The official blog does not say if that is per day or per month, so we will not add a timeframe.

The paid prices could not be verified from the official pricing page, because different sources read that page differently. One source from October 2026 reports Pro at $89 for the first year, renewing at $129 a year. Another source from May 2026 reports plans from $6.75 a month billed yearly. Because the prices conflict, we will not print one price as a fact in this guide. Check the official pricing page for the current price in your region before you buy. There is no traditional free trial.

Soda PDF is a good choice if you want a full desktop app and you only need a few quick online tools a day for free. For free AI, use ChatPDF or PDFgear Copilot instead.

Key Features:

• Full desktop PDF software with a fresh interface, plus free online quick tools
• Merge, compress, split, convert, e-sign, watermark, protect, rotate, and unlock for free, within the free limits
• AI Assistant with Chat with PDF and AI summarizer, on paid plans only
• OCR, translation, forms, and full editing on paid plans
• Works on Windows desktop and in the browser

Best for: Someone who wants a full desktop PDF app and only needs a couple of quick free tools a day online

Free plan: Free quick tools for merge, compress, split, convert, e-sign, watermark, protect, rotate, and unlock, within up to 2 files per day or a file size of 3 MB maximum. A free account may be needed to download the result. Edit PDF, OCR, forms, the Reader, the AI summarizer, translation, and Chat with PDF are NOT free. They need a paid plan. AI gives you 10 questions on Standard, 50 on Pro, and 200 on Business. Paid prices vary by source and region, so check the official pricing page before you buy. There is no traditional free trial. Check the official site for current free limits and prices.

How to Use Soda PDF Step by Step:

1. Go to sodapdf.com and pick a free online tool, for example Merge PDF or Compress PDF.
2. Upload your file. It must fit in the free limit of 2 files a day or 3 MB maximum.
3. Pick your settings and click the button to process your file.
4. Download the result. You may be asked to create a free account first.
5. If you want the desktop app, download Soda PDF 15 for free. You can try the editing tools, but saving the result needs a paid plan.

Watch out for: The free allowance is small, only 2 files a day or 3 MB maximum, and the official wording is not clear about which one applies. And do not expect free AI. Chat with PDF and the AI summarizer are paid only. If you need free AI, use ChatPDF or PDFgear Copilot. Also, do not trust a single price for Soda PDF. Different sources report very different prices, so check the official pricing page before you pay.

11. PDFescape

PDFescape is a free online PDF editor that runs in your browser. It lets you edit a PDF, add annotations and markup, fill and save forms, create basic forms, share PDFs, and print to PDF. You do not need to register for basic use. It is ad-supported, and it is always free, not a trial.

The free plan has clear limits. You can store 10 files for 7 days, and each file can be up to 10 MB or 100 pages. That is enough for a few forms a week, but not for a large library. What is NOT free is editing existing text and images, combining or extracting pages, converting PDF to Word, adding a watermark or page numbers, compressing, and scan to PDF. Those are Premium. Advanced forms, digital signing, and redaction are Ultimate only.

PDFescape has no AI features at all. There is no chat with PDF, no AI summarizer, and no AI assistant. Do not think of it as an AI tool. It is a basic editor and form filler, and it is in this guide because it is one of the easiest free ways to fill in a PDF form in your browser, with no sign-up.

The paid plans are cheap. Premium costs $2.99 a month billed yearly, or $5.99 a month billed monthly. It gives you 100 files stored for 30 days, files up to 40 MB or 1,000 pages, the desktop app, printing, and scanning. Ultimate costs $5.99 a month billed yearly, or $8.99 a month billed monthly. It adds no storage expiry, advanced forms, digital signing, and redaction.

PDFescape is a good choice if you need to fill in a form right now, with no account and no install. For anything bigger, use PDFgear or Sejda instead.

Key Features:

• Free online PDF editing in the browser, with no registration needed for basic use
• Annotate and mark up PDFs, fill and save forms, create basic forms, share PDFs, print to PDF
• Always free, not a trial, supported by ads
• Premium and Ultimate plans are cheap, from $2.99 a month billed yearly
• Works on any device with a browser

Best for: Anyone who needs to fill in a PDF form fast, for free, with no sign-up

Free plan: Free plan with online PDF editing, annotations, form filling and saving, basic form creation, sharing, and printing to PDF. Limits are 10 files stored for 7 days, and 10 MB or 100 pages per file. Ad-supported. No registration needed. Editing existing text and images, combining or extracting pages, converting to Word, watermarks, page numbers, compress, and scan to PDF need Premium. Advanced forms, digital signing, and redaction need Ultimate. There are NO AI features. Premium costs $2.99 a month billed yearly, or $5.99 a month billed monthly. Ultimate costs $5.99 a month billed yearly, or $8.99 a month billed monthly. Check the official site for current free limits and prices.

How to Use PDFescape Step by Step:

1. Go to pdfescape.com and click Free Online, then choose to edit a PDF.
2. Upload your PDF file. It must be under 10 MB or 100 pages.
3. Click on a form field and type your answer. Add text, check marks, or annotations where you need them.
4. Save your file and download it. You do not need an account for basic use.
5. Remember, your file is stored for 7 days, and you can only store 10 files for free. Download your result right away.

Watch out for: PDFescape cannot edit the text that is already in your PDF. It can only add new text on top. It also cannot merge pages, convert to Word, or compress a file on the free plan. And it has no AI at all. Use it for forms, and use ChatPDF or PDFgear Copilot when you need AI.

12. Canva PDF Editor

Canva PDF Editor is the PDF editor inside Canva, the popular design tool. You upload a PDF, and you can edit the text, images, and layout, add new pages, add shapes and stickers, and export the result as a PDF, JPG, or PNG. You can export as PDF Standard for sharing online, or PDF Print for high-quality printing. It is made for people who want their PDF to look beautiful, not just to fix a typo.

The PDF editor is included free. You need a Canva account, but you do not need Pro for basic PDF editing. You can upload a PDF of up to 300 MB and 500 pages. One other guide reports a lower limit of 100 MB and 300 pages, but the more recent check supports 300 MB and 500 pages, so we will use those figures. There are hard limits to know. A scanned or image-only PDF cannot be edited, because Canva has no OCR. It is imported as one flat image. A password-protected PDF cannot be imported at all. There is no tagged or accessible PDF export, and print-ready CMYK export is Pro only.

Canva has AI features, but there is no chat with PDF. Canva AI can take an uploaded PDF as context, and tools like Magic Write draw on your monthly AI allowance. The most recent sources from October 2026 say the free plan gives you up to 20 Standard or Premium AI uses a month, with no Ultra AI. An earlier read from September 2026 said up to 200 Standard or 20 Premium uses. The number has changed, so treat the allowance as limited and check the current figure on Canva's site. There is no e-sign feature that we could verify.

The free plan also gives you more than 1.6 million templates, more than 4.7 million free photos, videos, graphics, and audio, 5 GB of cloud storage, and 1 Brand Kit with 3 colours. The paid plan is Pro. Its price is reported differently by different sources. Reads from September to mid-October 2026 say $18 a month or $180 a year. Reads from 30 October 2026 say $144 a year, or $12 a month billed yearly. The Pro price appears to have changed in October 2026, so check the official pricing page before you buy. Business costs $25 a person a month, or $250 a person a year, and that figure is consistent across sources. In 2026, Canva Teams was replaced by the Business plan, and Canva introduced the AI allowance system with Standard, Premium, and Ultra tiers.

Canva PDF Editor is a good choice if you want to make a PDF look good. It is the best tool in this guide for designing a CV, a menu, a flyer, or a report cover. For chatting with a PDF, use ChatPDF instead.

Key Features:

• Free PDF editor inside Canva: edit text, images, and layout, add pages, shapes, and stickers
• Export as PDF Standard, PDF Print, JPG, or PNG
• Upload a PDF of up to 300 MB and 500 pages on the free plan
• More than 1.6 million templates and 4.7 million free photos, videos, graphics, and audio
• AI tools with a limited monthly allowance on the free plan

Best for: A designer, student, or small business owner who wants a PDF that looks beautiful, not just a fixed PDF

Free plan: Free plan with the PDF editor included. No Pro needed for basic PDF editing. Upload a PDF of up to 300 MB and 500 pages. Edit text, images, and layout, and export as PDF Standard, PDF Print, JPG, or PNG. Scanned PDFs cannot be edited because there is no OCR, and password-protected PDFs cannot be imported. There is no chat with PDF. AI uses are limited to about 20 Standard or Premium uses a month. Pro is listed at $18 a month or $180 a year, though some recent reads show $144 a year, so check the official pricing page. Business costs $25 a person a month, or $250 a person a year. Check the official site for current free limits and prices.

How to Use Canva PDF Editor Step by Step:

1. Go to canva.com and create a free account, then open the PDF Editor.
2. Click Upload your PDF and pick your file. It must be under 300 MB and 500 pages, and it must not be password-protected.
3. Click on the text or image you want to change, and edit it. Add new text, shapes, or a new page if you need one.
4. Use Canva's templates, photos, and design tools to make the PDF look better. Remember, your AI uses are limited to about 20 a month on the free plan.
5. Click Share, then Download, and pick PDF Standard for online sharing or PDF Print for high-quality printing.

Watch out for: A scanned PDF will not work. Canva has no OCR, so a scanned page is imported as one flat image that you cannot edit. A password-protected PDF cannot be imported at all. And do not expect chat with PDF. Canva's AI can use your PDF as context, but it will not answer questions about it like ChatPDF does. Use Canva for design, and ChatPDF for reading.

A Free Workflow That Works

You do not need to pay for PDF tools. You need a simple routine. Here is a free workflow that covers almost everything, using only the free plans in this guide.

For reading and understanding a long PDF: Use ChatPDF. Upload your PDF, up to 120 pages and 10 MB, and ask it questions. Ask for a summary in 5 bullet points. Ask what a table means. Ask it to explain a difficult paragraph in simple words. You get 2 free documents a day. If your PDF is longer than 120 pages, split it into parts with PDF24 first, then chat with one part at a time. If you need to ask many questions about one important PDF, use PDF.ai for your one free upload a month, with 100 questions.

For editing a PDF: Use PDFgear. It is completely free, with no daily limit. Open your PDF in the desktop app or the online tools, edit the text and images, add notes, and save it with no watermark. If you need to fix a typo and keep the original font, use Sejda instead. You get 3 free tasks an hour, and the counter resets on the clock hour.

For merging, splitting, and compressing: Use PDF24 Tools. It has no limits at all. Merge 10 PDFs into one. Split a 200-page book into chapters. Compress a 50 MB PDF so you can email it. Convert a PDF to Word or Excel. Do as many as you like, with no account and no daily cap.

For forms: Use PDFescape. Open the form in your browser, click on each field, type your answer, and download it. No sign-up needed. You can store 10 files for 7 days for free. If the form is a scanned image, use Sejda's free OCR first, up to 10 pages per task.

For a beautiful PDF: Use Canva PDF Editor. Upload your PDF, edit the text and layout, add your brand colours and images, and export it as PDF Print. It is free, and it makes a CV, a menu, or a report look professional.

For testing a paid tool: Use your trial well. Foxit gives you a 14-day trial of the full editor, plus 300 free AI credits a month forever. Do not start the trial until you have real work to do. Use the 14 days to edit your most important documents, and keep using the 300 free AI credits every month after the trial ends.

Here is a real example. A student has a 90-page lecture PDF on Monday, a form to fill in on Wednesday, and a CV to send on Friday. She uploads the lecture to ChatPDF and asks for a summary in 5 bullet points. She fills in the form with PDFescape in her browser. She edits her CV in Canva PDF Editor and exports it as PDF Print. She pays nothing, and she has finished all three jobs.

Free vs Paid: Do You Need to Pay?

Most people do not need to pay for PDF tools. The free plans in this guide cover a student, a freelancer, a small team, and a casual user. You need to pay only in three cases.

1. You chat with PDFs for hours every week. If you read 5 long papers a day, ChatPDF's free plan will stop you after 2 documents. PDF.ai's free plan will stop you after 1 upload a month. PDFgear Copilot has no published cap, so try that first. If you still hit a limit, ChatPDF Plus at $19.99 a month gives you unlimited documents and questions. PDF.ai Pro at $10 a month billed yearly gives you 100 uploads a month. Pick the cheaper one that fits your reading.

2. You need a feature that is not on any free plan. Editing existing text is free on PDFgear and Sejda, so you may never need to pay for it. But if you need advanced OCR on 100 pages at once, batch processing, or digital signatures, you need a paid plan. Sejda's annual plan at $63 a year is one of the cheapest. Foxit Editor at $10.99 a month on annual billing is a good deal if you want a professional editor with AI.

3. You need AI summaries every day. PDFgear Copilot is free with no published cap, so it should cover most people. If you need guaranteed AI access with no risk of the free offer changing, ChatPDF Plus at $19.99 a month or PDF.ai Pro at $10 a month billed yearly will give you that. Do not pay for AI on iLovePDF, Adobe, or Soda PDF unless you already use those tools every day, because their AI is a paid add-on to a tool you may not need.

Before you pay, try the free workflow for two weeks. Write down what you could not do for free. Then pick the cheapest paid plan that solves that one problem. Do not pay for a tool because it looks good. Pay because the free plan stopped you from doing real work.

Mistakes to Avoid

1. Confusing a trial with a free plan. Foxit PDF Editor gives you a 14-day trial, not a free plan. After 14 days, the editor stops working unless you pay. The 300 free AI credits a month are the real free offer, not the editor. If you build your routine on the editor, it will stop working in the middle of your project. Use trials to test, and use real free plans for daily work.

2. Expecting AI in every tool. Sejda, PDF24, and PDFescape have no AI features at all. iLovePDF's AI is paid-only. Adobe's AI Assistant is a paid add-on. Soda PDF's AI is paid-only. Only ChatPDF, PDF.ai, PDFgear Copilot, Smallpdf's limited AI, and Foxit's 300 monthly AI credits are free. Pick the right tool for the job, and do not be disappointed when a classic tool cannot chat.

3. Ignoring the per-file cap. iLovePDF's free OCR stops at 15 MB. ChatPDF's free plan stops at 120 pages. Sejda's free plan stops at 200 pages or 50 MB. PDFescape's free plan stops at 10 MB or 100 pages. Always check the per-file limit, not just the daily limit. The per-file limit is the one that will catch you.

4. Uploading sensitive PDFs to AI tools. When you chat with a PDF, your file is uploaded to the tool's servers. Most tools delete it after a while, but you should still be careful. Do not upload a contract with bank details, a medical record, or a private document to a free AI tool unless you have read its privacy policy. For sensitive files, use PDFgear's desktop app, which processes most work on your own computer, or PDF24 Creator, which works fully offline.

5. Paying for AI you can get free. PDFgear Copilot is free with no published cap. Before you pay $19.99 a month for ChatPDF Plus, try Copilot. Before you pay for iLovePDF Premium just for the AI, try ChatPDF's free plan. Many people pay for AI they could have used for free.

6. Forgetting that files are deleted. Sejda deletes your files after 2 hours. PDF24 deletes them within 1 hour. PDFescape stores your files for 7 days. Download your result right away. Do not leave your only copy on a free PDF site and expect it to be there tomorrow.

7. Using the wrong tool for the job. ChatPDF cannot edit or merge a PDF. PDFescape cannot chat with a PDF. Canva cannot read a scanned PDF. Foxit's free Reader cannot edit. Pick the right tool for what you are doing, and use two tools if you need to.

8. Trusting a single price. Soda PDF's paid prices are reported very differently by different sources. Canva Pro's yearly price changed in October 2026, and sources disagree. Adobe's pricing page was blocked when we checked it. Always check the official pricing page before you buy, and do not trust a price you read in an old article.

Frequently Asked Questions

1. Can I really use AI PDF tools for free without paying?

Yes. ChatPDF gives you 2 free documents a day. PDF.ai gives you 1 free upload a month with 100 questions. PDFgear Copilot is free with no published cap. Smallpdf gives you limited free AI. Foxit gives you 300 free AI credits a month forever. You can chat with PDFs for free every month, as long as you stay inside the free limits.

2. Which free tool lets me chat with a PDF?

ChatPDF is the best free choice. You get 2 documents a day, up to 120 pages each. PDFgear Copilot is also free with no published cap, and it lets you edit the PDF too. PDF.ai gives you 1 upload a month with 100 questions. Pick ChatPDF for daily reading, PDFgear for editing plus chat, and PDF.ai for data extraction.

3. Which PDF tool is completely free with no limits?

PDFgear and PDF24 Tools. PDFgear is a completely free editor with no account, no watermark, no ads, and no daily quota. PDF24 Tools is free of charge and without restriction, with no account and no daily or task cap. Both have no paid consumer tier for the tools themselves.

4. Is Foxit PDF Editor really free?

No, not the editor. Foxit PDF Editor gives you a 14-day free trial, and then you must pay. After the trial, you fall back to the free Foxit PDF Reader, which can only view, annotate, fill forms, and fill and sign. But every free Foxit account gets 300 AI Assistant credits a month, forever, and that part is genuinely free.

5. Does iLovePDF have free AI?

No, effectively not. The Standard AI Summarizer and Standard AI Translate are marked "No" for the free plan on the official pricing page. The Advanced AI tools run on AI credits, and Premium includes 2,000 credits. If you want free AI, use ChatPDF or PDFgear Copilot instead.

6. Can I edit text in a PDF for free?

Yes, with PDFgear and Sejda. Both let you click on the words already in the PDF and change them, and they keep the original font. Most other free tools can only add new text on top. Smallpdf, iLovePDF, and Adobe need a paid plan for real text editing.

7. Which tool is best for students?

ChatPDF for reading long papers, PDFgear for editing and AI chat, and PDF24 for merging and compressing. iLovePDF gives students 1 year of Premium free, which is also a good deal. For filling in forms, use PDFescape, which needs no sign-up.

8. Can I merge and split PDFs for free?

Yes. PDF24 Tools has no limits at all, so you can merge and split as many files as you like. iLovePDF lets you merge up to 25 files of 100 MB for free. PDFgear and Smallpdf also merge and split for free, within their own limits.

9. Is my PDF private when I upload it?

It depends on the tool. Most tools upload your file to their servers and delete it after a while. Sejda deletes files after 2 hours. PDF24 deletes them within 1 hour. PDFescape stores them for 7 days. For sensitive files, use PDFgear's desktop app, which does most work on your computer, or PDF24 Creator, which works fully offline. Never upload a contract with bank details or a medical record to a free AI tool without reading its privacy policy first.

10. Can I convert a PDF to Word for free?

Yes. iLovePDF converts 1 file of 15 MB for free. PDFgear converts for free with no daily limit. PDF24 converts for free with no limits. Smallpdf converts as one of your 2 free tasks a day. If your file is bigger than 15 MB, use PDFgear or PDF24 instead of iLovePDF.

11. What is PDFgear Copilot?

PDFgear Copilot is the free AI chat inside PDFgear. You can ask it questions about your PDF, get a summary, and ask it to rewrite or proofread text. It is powered by GPT-3.5, and it is free with no published usage cap. It is the best free AI chat in this guide, as long as the free offer lasts.

12. Can I sign a PDF for free?

Yes. Smallpdf gives you 2 free signed documents a month through Sign.com. iLovePDF lets you sign 3 files of 50 MB for free. Adobe lets you fill and sign for free with a free Adobe account. Sejda and PDFgear also let you sign for free. PDFescape can fill forms for free, but digital signing needs the Ultimate plan.

13. Which tools work without an account?

PDF24 Tools, Sejda, and PDFescape work without an account. iLovePDF works without an account for basic tools. ChatPDF works without sign-up to start, but you need a free account to save chat history. Smallpdf works without an account for your first tasks. Adobe needs a free account for unlimited use. Canva needs a free account.

14. Can I use these tools on my phone?

Yes, most of them work in your phone's browser. Smallpdf, iLovePDF, Sejda, PDF24, ChatPDF, and PDFgear all work on mobile browsers. PDFgear also has a mobile app. Canva has a mobile app too. For heavy editing, a computer is easier, but for a quick merge or a question about a PDF, your phone is enough.

15. What is the best free PDF tool for business?

PDFgear for editing and AI chat, PDF24 for unlimited merging and converting, and ChatPDF for reading long reports and contracts. For forms, use PDFescape. For a beautiful invoice or menu, use Canva PDF Editor. Together, they cover almost every business PDF job for free.

16. Why does PDFescape have no screenshot in this guide?

Because we could not get a clean screenshot of its homepage. Both screenshot services we use returned errors for pdfescape.com, one a gateway timeout and one an access denied error. We did not want to show you an error page, so there is no image for that tool. The facts in its section were checked from the official site.

17. Do I need to pay if I use PDF tools every day?

Probably not. PDFgear and PDF24 have no daily limits at all, so daily editing, merging, and converting are free. ChatPDF gives you 2 documents a day, which covers most daily reading. You only need to pay if you read more than 2 long PDFs a day, or you need a feature that is not on any free plan, like batch processing, digital signatures, or advanced OCR on 100 pages at once.

Related Guides

• Best AI Tools for Students in 2026 — the best free AI tools for study, notes, homework, and research, including tools that read your PDF notes.
• Best Free AI Tools for Business in 2026 — free AI tools for meetings, emails, marketing, and running a small business, including PDF tools for invoices and contracts.
• Best Free AI Writing Tools in 2026 — write better with free AI writing tools, then turn your writing into a clean PDF to share.

Final Thoughts

Free AI PDF tools in 2026 are good enough for real work. You do not need to pay to read a long PDF, edit a document, merge files, or convert a PDF to Word. You only need to pick the right tool for what you are doing, and to know its limits before you start.

Here is the simple answer. If you want to understand a long PDF, use ChatPDF. It gives you 2 free documents a day, with answers that show the source page. If you want to edit a PDF and chat with it, use PDFgear. It is completely free, with no daily limit and a free AI Copilot. If you need to merge, split, or compress many files, use PDF24 Tools. It has no limits at all. If you need to fill in a form fast, use PDFescape. If you want your PDF to look beautiful, use Canva PDF Editor. That is all most people need.

Remember the two warnings. First, not every tool in this guide has AI. Sejda, PDF24, and PDFescape have no AI features, and iLovePDF, Adobe, and Soda PDF keep their AI behind a paywall. Use the right tool for the job. Second, a trial is not a free plan. Foxit's editor stops working after 14 days. Use trials to test, and use real free plans for daily work.

Start with ChatPDF and PDFgear. Use them for two weeks. Then decide what is missing. Most people find that two or three free tools cover everything they need. And when you do need to pay, pay for the cheapest plan that solves your one real problem, not for the tool that looks the best.

Your PDFs are full of useful words. Stop reading them page by page. Let the AI find the answer, let the free tools do the heavy work, and use your time for the work that matters.