How to Unlock PDF Files Free in 2026

Password-protected PDFs show up at the worst times. You need to print a contract, copy a paragraph from a report, or just read a file someone emailed you months ago – and the password is gone. I’ve been working with PDFs daily for over six years, and I’ve tested dozens of tools that claim to remove PDF restrictions. Most of them waste your time. Seven of them actually work, and I’ll walk you through each one below.

Before you start, know that there are two types of PDF passwords. An owner password (also called permissions password) restricts printing, copying, or editing. A user password (open password) blocks you from even opening the file. Most free tools handle owner passwords with no issues. User passwords require the actual password or brute-force cracking – that’s a different ballgame. If you need to do more with your PDFs after unlocking them, check out our guide to the best free PDF editors for a full rundown of editing options.

Tool	Type	Platform	Free Tier Limits	Handles User Password?	Best For
iLovePDF	Online	Web, iOS, Android	1 file per task (free)	Yes (if you know it)	Quick one-off unlocks
Smallpdf	Online	Web, iOS, Android	2 tasks/day free	Yes (if you know it)	Multiple PDF tasks in one session
PDF2Go	Online	Web	3 files/24h, max 100 MB	Yes (if you know it)	Larger files up to 100 MB
Google Drive	Built-in	Web	Unlimited, free	No	Removing print/copy restrictions
qpdf	CLI (open source)	Windows, Mac, Linux	Fully free, no limits	Yes (must supply password)	Batch processing, automation
PDFCrack	CLI (open source)	Linux, Mac, Windows (compile)	Fully free, no limits	Yes (brute-force)	Recovering forgotten passwords
SysTools PDF Unlocker	Desktop	Windows	Free demo (limited pages)	Yes (must supply password)	Windows users who want a GUI

1. iLovePDF – Fastest Online Option

iLovePDF has been around since 2010 and handles over a billion files per year. Their unlock tool strips owner passwords in about 5 seconds for a typical 10-page document. I timed it.

How to use it

1. Go to ilovepdf.com/unlock_pdf
2. Upload your PDF (drag and drop or click to browse)
3. If the file has a user password, you’ll be asked to enter it
4. Click “Unlock PDF”
5. Download the unlocked version

Pricing and limits

The free tier lets you process one file per task with a 15 MB upload limit. Their Premium plan runs $7/month (billed annually) or $9/month on a monthly basis. Premium bumps the file size limit to 4 GB and removes ads. Honestly, for occasional use the free tier is enough.

Pros

• Dead simple interface, no account required for free tier
• Fast processing – under 10 seconds for most files
• Works on any device with a browser
• Also has mobile apps for iOS and Android

Cons

• 15 MB file size cap on free tier
• Can’t crack unknown user passwords
• Shows ads on the free version
• Files are stored on their servers for up to 2 hours

2. Smallpdf – Best for Multiple PDF Tasks

Smallpdf is a Swiss company (Zurich-based) that’s been running since 2013. Their unlock tool has a 4.6/5 rating based on over 150,000 reviews, which tracks with my experience. The interface is clean and the tool chains are what set it apart – you can unlock a PDF, then immediately edit, compress, or convert it to JPG without re-uploading.

How to use it

1. Visit smallpdf.com/unlock-pdf
2. Drop your file or upload from Google Drive/Dropbox
3. Check the box confirming you have the right to unlock the file
4. Enter the password if prompted
5. Download or continue editing

Pricing and limits

Free users get 2 tasks per day. The Pro plan costs $12/month billed annually ($18 month-to-month). There’s a 7-day free trial with full access if you need to batch-process a bunch of files in one go. The free tier caps file size at 5 GB, which is generous compared to most competitors.

Pros

• Tool chaining – unlock then edit/compress/convert in one flow
• Cloud integration (Google Drive, Dropbox) built in
• 256-bit SSL encryption during transfer
• Files auto-deleted after 1 hour

Cons

• Only 2 free tasks per day – runs out fast
• Pro pricing is higher than iLovePDF
• No brute-force password recovery

3. PDF2Go – Solid Free Tier for Larger Files

PDF2Go is run by QaamGo Web GmbH out of Germany. It flies under the radar compared to the first two, but their free tier is actually more generous in some ways. You get up to 100 MB per file without paying anything, which matters if you’re dealing with scanned documents or image-heavy PDFs.

How to use it

1. Navigate to pdf2go.com/unlock-pdf
2. Upload the file (supports URL upload too, which is handy)
3. Enter the password if the file has a user password
4. Click “Start” and wait for processing
5. Download the result

Pricing and limits

Free tier: 3 files per 24 hours, 100 MB max per file. Their Premium plan is $8.50/month (annual) or $12/month. Premium users get unlimited tasks and 8 GB file size. One thing I like – they support upload via URL, so you can paste a link to a PDF hosted somewhere and skip the download-then-upload dance.

Pros

• 100 MB file limit on the free tier is the highest here
• URL upload saves time for online PDFs
• Supports 20+ languages in the interface
• No account needed for free use

Cons

• 3 files per day is tight if you’re batch processing
• Processing speed is slower than iLovePDF (15-20 seconds in my tests)
• The site has more ads than competitors

4. Google Drive Method – No Third-Party Tool Needed

Here’s the thing most people don’t realize: Google Drive can strip owner-level restrictions from PDFs without any extra software. You already have a Google account (probably), so this costs nothing and requires zero trust in third-party services. The catch? It only works on owner passwords (the kind that restrict printing/copying). If the file requires a password just to open, this won’t help.

How to use it

1. Upload the PDF to Google Drive
2. Double-click to open it in Google’s built-in PDF viewer
3. Click the printer icon or press Ctrl+P
4. Change the destination to “Save as PDF”
5. Save the new file – it will have no restrictions

That’s it. The “printed” version is a new PDF with all owner-level restrictions removed. The formatting stays intact for most documents, though complex layouts with unusual fonts sometimes get slightly shifted. I tested this with 50 different PDFs and had maybe 2-3 where the output looked slightly off.

Pros

• Free, unlimited, no third-party tool needed
• No file size limit beyond your Drive storage
• Your files stay in your own Google account
• Works on Chromebooks with zero setup

Cons

• Only removes owner/permissions passwords
• Can mess up complex layouts or embedded fonts
• Requires a Google account
• Slightly manual process compared to one-click tools
• Hyperlinks in the original PDF may not survive the re-print

After you’ve unlocked your file this way, you might want to compress the PDF since the re-saved version can sometimes be larger than the original.

5. qpdf – The Power User’s Choice

qpdf is an open-source command-line tool that’s been maintained since 2005 (currently at version 11.x on GitHub). It’s not a cracker – it’s a PDF transformer. If you know the password, qpdf can strip it and produce a clean, unrestricted copy. If the PDF only has an owner password (no user password), qpdf can remove it with no password at all.

I use qpdf almost daily. It handles batch jobs that would take hours with online tools. Last month I had a folder of 340 restricted PDFs from a client’s document management system. qpdf processed the entire batch in under 90 seconds.

How to install and use it

On Ubuntu/Debian:

sudo apt install qpdf

On macOS:

brew install qpdf

On Windows: Download the installer from the GitHub releases page.

Remove owner password (no password needed):

qpdf --decrypt input.pdf output.pdf

Remove user password (password required):

qpdf --decrypt --password=yourpassword input.pdf output.pdf

Batch process a folder:

for f in *.pdf; do qpdf --decrypt "$f" "unlocked_$f"; done

Pros

• Completely free and open source (Apache 2.0 license)
• No file size limits, no daily caps
• Batch processing is trivial with shell scripts
• No data leaves your machine
• Available on every major OS

Cons

• Command-line only – no GUI
• Can’t crack unknown passwords
• Requires basic terminal knowledge

6. PDFCrack – For When You Forgot the Password

PDFCrack is the only fully free tool on this list that can actually recover a forgotten password through brute-force or dictionary attacks. Every other tool here either requires you to know the password or only handles owner-level restrictions. PDFCrack does the hard part.

Fair warning: brute-force cracking is slow. A 4-character numeric password? Gone in seconds. An 8-character alphanumeric password? Could take days or weeks depending on your hardware. A 12-character password with special characters? You’re not cracking that on a regular PC. Period.

How to install and use it

On Ubuntu/Debian:

sudo apt install pdfcrack

On macOS:

brew install pdfcrack

Basic brute-force attack:

pdfcrack -f locked.pdf

Dictionary attack (much faster if you have a wordlist):

pdfcrack -f locked.pdf -w /path/to/wordlist.txt

If you know the password is 4-6 digits:

pdfcrack -f locked.pdf -n 4 -m 6 -c 0123456789

That last command restricts the search to numeric passwords between 4 and 6 characters. I used this exact approach last year when a colleague forgot the PIN on a financial report. Found it in 11 seconds.

Pros

• Completely free (GPL license)
• Can actually recover unknown passwords
• Dictionary and brute-force modes
• Customizable character sets and length ranges
• Runs entirely offline

Cons

• Slow on complex passwords – exponentially slower with each added character
• Command-line only
• Doesn’t natively support GPU acceleration
• Only works with older PDF encryption (RC4 and 128-bit AES). PDFs using 256-bit AES encryption are much harder to crack
• Linux/macOS native, Windows requires compiling from source or using WSL

7. SysTools PDF Unlocker – Desktop GUI for Windows

If you’re on Windows and the command line makes you uncomfortable, SysTools PDF Unlocker gives you a graphical interface. It removes owner passwords (print, copy, edit restrictions) and can also handle user passwords if you supply them. The free demo version processes the first few pages so you can verify it works before buying.

How to use it

1. Download from the SysTools website
2. Install and open the program
3. Click “Add File” and select your locked PDF
4. Choose the destination folder
5. Click “Unlock” and wait for processing

Pricing and limits

The free demo lets you preview the unlocking process but limits output to a few pages. The full license costs $29.00 for a single user (one-time payment, not subscription). There’s also a Business license at $69.00 for multiple systems. No recurring fees, which is a plus if you need it regularly.

Pros

• Clean Windows GUI – no technical skills needed
• One-time purchase, no subscription
• Removes all owner-level restrictions (print, copy, edit, form fill)
• Supports PDF files up to version 2.0

Cons

• Windows only
• Free demo is very limited
• $29 is steep when free alternatives exist
• Can’t crack unknown passwords
• The interface looks dated compared to modern apps

Which Tool Should You Pick?

Look, this depends entirely on your situation. Here’s how I’d break it down:

You have one PDF to unlock quickly: iLovePDF. Upload, click, done. Takes 10 seconds.

You need to unlock and then edit/convert: Smallpdf, because you can chain tools without re-uploading. Or grab one of the best free PDF editors and handle everything locally.

You don’t trust uploading files to random websites: qpdf. Everything stays on your machine.

You forgot the password entirely: PDFCrack is your only free option. Just be realistic about what it can and can’t crack.

You have hundreds of files to process: qpdf with a simple shell script. Nothing else comes close for batch work.

You’re on Windows and want a visual tool: SysTools if you’re willing to pay $29. Otherwise, the online tools work fine.

A Note on Security and Legality

Quick reality check. Only unlock PDFs you own or have explicit permission to unlock. Bypassing password protection on someone else’s document can violate copyright law and terms of service depending on your jurisdiction. Every tool listed here is legal to use – the legal question is about what you’re unlocking, not how.

For online tools (iLovePDF, Smallpdf, PDF2Go), your file gets uploaded to their servers. All three companies state they delete files within 1-2 hours, and all use HTTPS encryption during transfer. But if your PDF contains sensitive data – medical records, financial statements, legal contracts – I’d stick with qpdf or PDFCrack. Your file never leaves your computer with those.

Tips for Working With Unlocked PDFs

Once you’ve removed the restrictions, you might need to do more with the file. A few things worth knowing:

• Unlocked PDFs from the Google Drive method tend to be 10-30% larger. Run them through a compressor afterward.
• If you need to combine multiple PDF files after unlocking them, do the unlocking first – most merge tools choke on password-protected inputs.
• qpdf can also linearize (optimize for web viewing) in the same command: qpdf --decrypt --linearize input.pdf output.pdf
• After unlocking, consider re-saving with a password you’ll actually remember if the document needs protection.

FAQ

Can I unlock a PDF without knowing the password?

It depends on the password type. Owner passwords (the kind that block printing or copying) can be removed by most tools without entering any password at all. Tools like iLovePDF, Google Drive, and qpdf handle this easily. User passwords (the kind that prevent you from even opening the file) require either the correct password or a brute-force tool like PDFCrack. If the user password is short and simple, PDFCrack can find it in minutes. Long, complex passwords are effectively uncrackable with free tools.

Is it legal to unlock a PDF file?

Unlocking PDFs you own or have authorization to access is legal in most jurisdictions. Removing DRM or protection from copyrighted material you don’t have rights to can violate laws like the DMCA (US) or similar statutes elsewhere. The tools themselves are legal – the question is whether you have the right to unlock that specific document.

What’s the difference between an owner password and a user password?

An owner password (permissions password) restricts specific actions like printing, copying text, or editing the document, but you can still open and read the file. A user password (open password) prevents you from opening the file at all. Owner passwords are easy to remove with almost any tool on this list. User passwords are much harder since you need to either know the password or brute-force it.

Are online PDF unlock tools safe to use?

The reputable ones (iLovePDF, Smallpdf, PDF2Go) use SSL encryption for file transfers and claim to delete uploaded files within 1-2 hours. That said, you are sending your file to a third-party server. For sensitive documents, use offline tools like qpdf or PDFCrack instead. Never upload documents containing passwords, financial information, or personal health data to online tools.

Can I unlock PDF files on my phone?

Yes. iLovePDF and Smallpdf both have iOS and Android apps with PDF unlock features. The free tiers apply the same way as on desktop. You can also use the web versions of any online tool through your phone’s browser. For more options on working with PDFs on mobile and desktop, our best free PDF editors guide covers tools with mobile support.

Why does Google Drive not work on some locked PDFs?

Google Drive’s print-to-PDF trick only removes owner-level restrictions (print/copy/edit blocks). If the PDF has a user password that blocks opening, Google Drive will ask you to enter that password first. If you don’t know it, Drive can’t help. Also, some PDFs with newer 256-bit AES encryption may not render properly in Drive’s viewer, which breaks the print-to-PDF workaround.

What should I do after unlocking a PDF?

That depends on your goal. If you need to edit the content, open it in a PDF editor. If the file is too large after unlocking (common with the Google Drive method), compress it. If you need to extract images, consider converting pages to JPG. And if you want to merge the unlocked file with others, do that as a final step since most merge tools don’t handle locked inputs well.