Unlock PDF
Remove the password from a PDF you can already open and download a clean copy with no restrictions. Decryption runs in your browser, so the file and the password never leave your device. This tool removes protection from a file you can already open. It does not crack or guess passwords.
Add your PDF
PDF onlyDrop a PDF here or click to browse
Best for files under 50 MB
Result
Add a PDF to startYour unlocked PDF will appear here
The original file is untouched. Only the downloaded copy has the protection removed.
How to remove a password from a PDF
Add your PDF
Drop in the file you want to unlock. It is read locally in the browser, nothing is uploaded.
Enter the password if you have one
If the file asks for a password when it opens, type it in. Files that only restrict printing or copying can be left blank.
Download the unlocked PDF
The protection is removed by qpdf in your browser and the clean copy is ready to download.
Why use Aihangsoft Unlock PDF
Owner restrictions go too
Files that only block printing, copying or editing open without a password, so the flags are cleared in one step.
File and password stay local
Decryption runs in your browser through qpdf compiled to WebAssembly. Nothing is uploaded and nothing is stored.
Free, no limits
No sign-up, no page limit and no watermark or extra branding added to the unlocked document.
What this tool removes
Open password removal
If the document asks for a password before it displays, enter that password and the encryption is stripped from the copy. The password itself is only used inside the page and is never sent anywhere.
Use case: bank statements, invoices, tickets you received by emailPermission flags cleared
The output carries no encryption dictionary, so the old printing, copying and editing flags are gone. The unlocked file can be printed, searched and reused like any ordinary PDF.
Use case: supplier documents locked against printingDocument structure preserved
Only the security layer is rewritten. Pages, text, embedded images, bookmarks, links, attachments and form fields are carried across untouched, and the output stays a standard PDF 1.7 file.
Use case: archiving a readable master copy of a locked fileYour original stays untouched
The tool reads your file, writes a new unlocked copy and leaves the source alone. Nothing is modified in place, so you keep the protected original if you still need it.
Use case: uploading a locked invoice to a portal that rejects protected files