Remove a password you know
Type the current password and press Remove password. The copy opens without asking for it.
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Unlock PDF
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Files other than PDF are converted first. Signing in raises the size limit.
- You add
- One PDF that has a password
- You set
- Its current password
- You get
- A copy that opens without a password
Unlock PDF takes the password off a PDF so it opens without one. You need the password it has now. Add the file, type that password in Current password, and press Remove password. If you already typed the password to open the file in the editor, the box starts filled with it. A warning under the box says that anyone who has the file will be able to open it. If the password is wrong, the panel says so, selects what you typed so you can retype it, and leaves your file unchanged. This tool does not guess or break passwords: without the right one, nothing is unlocked. Some PDFs open without asking but still block printing or copying. Those have an owner password, and this tool needs that password too. In our test the button stayed off until something was typed, and there is no way here to lift the restrictions without a password.
Two 3-page sample PDFs made by us with AES-256 encryption, unlocked on indox.org with the right password
- Locked PDFneeds a password to open
- 4,323 B
- Unlocked copy3 of 3 pages, no encryption
- 2,797 B
- Owner-only PDFopens, print low-res only
- 4,314 B
- Unlocked copy3 of 3 pages, restrictions gone
- 2,863 B
What can you do when you unlock a PDF?
Start from the password you already used
If you typed the password to open the file in the editor, Current password is filled in for you. You can change it before you press the button.
Retry a wrong password in place
A wrong password shows that it did not work, puts the cursor back in the box with your text selected, and leaves your file unchanged. Retype and press the button again.
See the result and undo it
When the job ends the panel shows that the password was removed and that this copy opens without one. Undo puts back the locked version.
What unlocking keeps and what it changes
Stays the same
- Page content and page order. In our test, 3 pages came back as 3 pages with identical text.
- Ordinary links and attachments.
- The file on your device. You get a new copy in the editor.
Changes
- The copy opens without asking for a password, and the restrictions of an owner-only file are gone.
- Anyone who has the copy can open it.
- The file is rewritten. In our test it was smaller than the locked one, because the encryption overhead was gone.
- Scripts, auto-run actions, XFA forms and media annotations inside the PDF are removed.
How to unlock a PDF in 3 steps
Add your PDF
Drop the file on the upload area at the top of the page, or click to choose it.
Type its current password
Type the password in Current password. The button stays off until the box has something in it.
Press Remove password and download
The button fills with the job's progress. When it says Done, the editor holds the copy without a password: press Download PDF, or Undo to go back.
Why unlock a PDF with indox?
The panel does one thing and tells you what it will do before you press the button. It says it needs the password the file has now, warns that the unlocked copy opens for anyone, and handles a wrong password without touching your file. You can unlock a file without signing in, within the free daily limit and the free file size limit.
- One field, one button
- A wrong password leaves the file unchanged
- The box is filled in if you already typed the password
- Undo brings back the locked version
- A warning before you remove the protection
What are the limits when you unlock a PDF?
- Size
- Guests have a lower file size limit. Signing in raises it; a paid plan does not change it.
- Formats
- This tool works on PDF files. To change a file's type, use the PDF converter.
- Privacy
- Files are encrypted in transit and processed on indox infrastructure.
- Deletion
- Free-tier files are kept for 24 hours after the job finishes, then deleted automatically. Signed-in output stays in your history for your plan's retention period.
Limits worth knowing
- You need the password the file has now. indox cannot recover or guess a password.
- The unlocked copy opens for anyone who has it. Send it only to people who should read it.
- The button stays off until you type something in the box.
- Remove a password only from files you have the right to open.
- If you want the password back afterwards, use [Protect PDF](/pdf-tools/protect-pdf) on the unlocked copy.
- In our anonymous test on 5 November 2026 the page showed 10 free runs for the day and a largest upload of 200 MB. These numbers can change.
- The password is checked on the server when the job runs, so a wrong one shows up after a few seconds (about 6 seconds in our test). We did not find out whether a failed run uses one of the free daily runs.
- A file that opens without a password but blocks printing or copying needs its owner password. This tool has no option to lift those restrictions without it.
When unlocking does not go as expected
| What you see | Why | What to do |
|---|---|---|
| The file opens with no prompt but you cannot print or copy | It has an owner password only | Type the owner password in Current password and press Remove password. The button stays off while the box is empty. |
| An error appears about 6 seconds after you press Remove password, and the progress list shows Unlock PDF as failed | The password card accepts any text, and the password is only checked when the job runs on the server | Retype the password in Current password and press the button again. Your file is unchanged. |
| You do not remember the password | indox cannot recover or guess a password | Nothing can be unlocked without it. Ask whoever protected the file for the password. |
| The panel says the password did not work | The password you typed is not the one the file has | Check it and retype it. Your file is unchanged. |
| Remove password stays off | Current password is empty | Type the password. |
| You want the password back | The copy has none | Run Protect PDF on it. |
What do the free and paid plans add?
Free
- All converters
- Daily credit refresh
- Email support
Basic
- Access to all features
- AI Extract
- Priority conversions
- Email support
Highest priority
Premium
- Everything in Basic
- Highest priority queue
- Priority support
Pay-As-You-Go
- No subscription
- Credits never expire
- Opt-in auto-refill
- Access to all features
What else can you do with a PDF?
Open password or permissions password: which one do you need?
The first two rows follow the pypdf documentation for PdfWriter.encrypt. The other rows are from our test on 5 November 2026.
| Compared on | Open password (user) | Permissions password (owner) |
|---|---|---|
| What it does | Lets a viewer open and read the file, with the restrictions the file sets | Lets a viewer open the file without any of those restrictions |
| Asked when you open the file | Yes, the editor shows a password card | No. Our owner-only sample opened with no prompt |
| What Unlock PDF needs | The password the file has now | The owner password, typed in Current password |
| Result in our test | Unencrypted copy, 3 of 3 pages, identical text | Unencrypted copy, restrictions gone, 3 of 3 pages, identical text |
| If you do not have it | Nothing is unlocked | Nothing is unlocked here |
Who unlocks PDFs?
People with an old protected file
You protected a PDF long ago and now want a copy that opens without typing the password each time.
Teams editing a received file
A colleague sent a PDF with a password and gave you the password. Unlock it before editing, merging or compressing it.
Anyone who typed a password to read a file
You opened a protected PDF in the editor and want to keep the result without a password.
When to unlock a PDF
- When you know the password and no longer want to type it each time.
- Before you merge or compress a file that has a password.
- When a file you protected earlier should now open for everyone.
- When a PDF has to be handed to a system that cannot ask for a password.
Where can I read more?
Sources
- PdfReader.decryptpypdf documentation
- Encryption and decryption of PDFspypdf documentation
- PdfWriter.encryptpypdf documentation
Facts checked on November 5, 2026
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Unlock PDF FAQs
What does Unlock PDF need?
The password the file has now. Type it in Current password. For a file that opens without a prompt but blocks printing or copying, that is its owner password.
Can it unlock a PDF if I forgot the password?
No. indox cannot recover or guess a password.
What happens if I type the wrong password?
The panel says the password did not work, selects what you typed so you can retype it, and leaves your file unchanged.
Why is Current password already filled in?
If you typed the password to open the file in the editor, the box starts with it. You can change it.
Will the copy still ask for a password?
No. The panel says this copy opens without one.
Can I undo it?
Yes. Undo brings back the locked version.
Does it keep my pages?
Yes. Page content and order do not change. In our test, a 3-page sample came back with 3 pages and identical text.
Do I need an account?
No sign-in is needed to get the unlocked copy. The free daily limit and file size limit still apply.
My PDF opens but I cannot print or copy it. What do I need?
Its owner password. In our test an owner-only sample opened with no prompt, and Remove password stayed off until we typed the owner password. With it, the copy came back with no restrictions.
Does the unlocked copy change anything besides the password?
The file is rewritten, so its size changes (smaller in our test), and scripts, auto-run actions, XFA forms and media annotations are removed. Page content, order and text stayed the same in our test.