Unlock PDF Online Free — Remove PDF Passwords — 100% Secure
Remove password protection and permission restrictions from PDFs for free. Restricted files unlock with one click, known passwords work too. Files never leave your device.
Drop PDF files here
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Max 25 MB per file · Secure and private — files are never stored
How it works
- 1Drop the protected PDF into the box
- 2The tool checks how the file is protected — restrictions or an open password
- 3Restricted files: click "Unlock PDF" — no password needed. Password-locked: type the password
- 4Download the unrestricted copy
Unlock a PDF without sending the locked file to anyone
A locked PDF is, by definition, a file somebody considered sensitive — a contract with permissions, a payslip you cannot copy from, a report that will not print. The usual online unlockers ask you to hand exactly that file to their server before doing anything, then keep it "for two hours" while their queue processes it. Here the classification and the unlocking both happen in your browser: the file is read from your disk into memory, decrypted locally, and the unrestricted copy is written straight back to your downloads. At no point does the document — or the password you typed — leave your device.
There is no account, no daily task quota and no watermark on the result, and the site-wide limits are generous: files up to 25 MB and 200 pages. Tools that meter unlocking behind "2 files per day" are pricing a server; here your browser does the work, so there is nothing to meter.
Owner password vs user password — what can actually be removed
PDFs carry two different kinds of lock, and the difference decides what "unlock" can honestly mean. A user password (also called an open password) encrypts the whole file: without it, the content is mathematically unreadable ciphertext, and the only way in is to know it. An owner password does something weaker — it sets permission flags (no printing, no copying, no editing) on a file whose content is fully readable, and the PDF specification defines the decryption key for such files using an empty user password. That is why a restricted PDF can be unlocked here with one click and no password entry at all: the spec itself says the key is deterministic.
What no tool can honestly do is recover a user password you do not know. There is no crack on this page and there never will be — if a file demands a password, you type the one you have (the owner password works too), and if you do not have it, the tool tells you plainly instead of pretending.
Unlocking beats printing to PDF — here is why
The well-known free workaround for a restricted PDF is to open it in a browser and "print" it to a new PDF file. That does remove the restrictions, but it also re-renders every page: selectable text can turn into flatter output, form fields do not survive, and large scanned documents balloon in size or lose quality in compression. It is a screenshot pipeline wearing a PDF costume.
Unlocking properly — decrypting the original objects and rewriting the file without the /Encrypt dictionary — keeps every page exactly as it was: text stays selectable, images keep their original encoding, and page count is unchanged. The result is the same document with the lock removed, not a photocopy of it. The tool even verifies its own output by re-reading the finished file before offering the download, so a broken result is refused rather than shipped.
Is it legal to remove PDF protection?
For the everyday cases, yes: documents you created yourself, files issued to you for your own use (payslips, tax forms, contracts you are party to), and materials you are authorized to work with. Many jurisdictions also explicitly permit removing technical barriers for accessibility. What is not okay is stripping protection from documents you have no authorization to access, or unlocking DRM-protected commercial files (ebooks, paid reports) to redistribute them — those are legal questions no web tool can answer for you, and this page is not legal advice.
The honest framing: this tool removes protection; it does not grant rights. If you would need permission to copy or edit the content, unlocking the file does not create that permission — it only removes a technical obstacle for a document you are already entitled to use.
Free PDF unlocking, no signup, works offline
Everything above the fold is the whole product: drop the file, unlock, download. There is no account step, no email capture, no "upgrade to remove watermarks" — the unlocked file carries no watermark because no watermark is ever added. Once the page has loaded, unlocking works without a connection, which matters more than it sounds: locked files tend to appear on planes, in basements of government buildings, and anywhere else the wifi is not.
Afterwards, the unlocked copy works with every other tool on this site — combine it with Merge PDF, extract pages with Split PDF, or sign it with Sign PDF, which refuses restricted files and benefits from this unlock as a first step.
Frequently asked questions
Is my PDF uploaded to a server when I unlock it?
No — files never leave your device. The protected file is read into your browser, decrypted locally, and the unlocked copy is written straight to your downloads. Even the password you type stays on your device.
Can I remove a PDF password without knowing it?
If the PDF only carries permission restrictions (it opens without asking for a password), yes — the PDF specification defines the decryption key for such files with an empty password, so the restrictions come off with one click. If the PDF asks for a password when opened, no tool can honestly remove it without that password, and this one does not attempt cracking.
What is an owner password in a PDF?
An owner password (also called a permissions password) restricts what an already-opened document allows — printing, copying text, editing, annotating. The content itself is readable by any viewer. Because the restrictions ride on an encryption whose key is defined by an empty user password, they can be removed without knowing the owner password.
What is a user password (open password)?
A user password encrypts the entire file so it cannot even be opened without it. Viewers prompt for the password before showing a single page. To remove one, you must supply it — the tool derives the decryption key from your password locally and writes an unrestricted copy.
The PDF opens fine — do I still need a password here?
No. If the file opens normally in a viewer, it is owner-restricted, and the tool unlocks it with a single click and no password entry. The password field only appears for files that demand a password when opened.
Which password do I type if my PDF has both?
Either works. The tool first tries your entry as the user password, and the underlying PDF algorithm also accepts the owner password, from which the user password is derived by the spec. If you know only the owner password, that is enough.
Is unlocking a PDF legal?
For documents you own, created, or are authorized to use — payslips, your contracts, reports issued to you — removing protection is an ordinary everyday operation. Stripping protection from files you have no right to access, or from DRM-protected commercial documents you intend to redistribute, is a legal matter this tool cannot decide for you. Unlock responsibly; the page is not legal advice.
Does unlocking reduce the quality of my PDF?
No. Unlike the print-to-PDF workaround, unlocking does not re-render anything: text stays selectable, images keep their original encoding, and the page count is identical. The file is decrypted in place and rewritten — the same content, minus the lock.
What if my password does not work?
The tool says so plainly and lets you try again — password entry is local, so there is no attempt limit. Check for capitalization mistakes and keyboard layout switches first. If the file uses a protection profile the tool cannot verify, it refuses clearly instead of producing a broken file.
Which encryption types are supported?
The standard PDF protection revisions: 40-bit and 128-bit RC4 (the most common in older scanners and office workflows), 128-bit AES, and 256-bit AES as used by recent Acrobat versions. Files with rarer profiles or certificate-based encryption get a clear "not supported yet" message rather than a pretend success.
Can I unlock a scanned PDF?
Yes — scanned documents are a common case. Their pages are images, which decrypt exactly like text streams, so an unlocked scan keeps its original image quality byte for byte.
Does it work on iPhone, Android and tablets?
Yes. The tool runs in the mobile browser: open the page, pick the PDF from your Files app, unlock, and the copy lands in your downloads. All decryption happens on the phone itself.
Are there daily limits or an account requirement?
No. Unlocking is free with no signup, no per-day quota and no watermark. The only limits are the site-wide ones — 25 MB per file and 200 pages — which come from doing all the work in your browser rather than on a server.
How do I add a password to a PDF instead?
That is the reverse job, and a separate tool. This page removes protection; to add encryption, use a dedicated PDF application or a command-line tool such as qpdf. An unlocked file can be re-protected by whatever app created it.