Unlock PDF – Remove a PDF Password You Know

Unlock a PDF when you already know the password

Plenty of PDFs arrive locked. A bank e-statement, a mutual fund account statement, a salary slip, an insurance policy or an acknowledgement from a government portal often opens only after you type a password. That is fine for the first reading and a nuisance for every reading after it, and it blocks most other tools entirely. This page lets you unlock a PDF online: you supply the password, and you get back a copy that opens without a prompt.

The typical reasons are practical. You want to merge the statement with other papers, compress it for an upload form, convert it to Word, or stop retyping the same password each time your accountant opens it. If you were searching for a PDF password remover that removes the password from a file you own, that is the job done here.

This is not a password cracker

The tool does not guess, search or work around passwords. If a file needs a password to open and you do not have it, there is nothing here that will open it, and that is by design. A modern PDF protected with AES-256 is scrambled with a key derived from the password. Without the password the content is just noise, and no website can reverse that for you.

To put a number on it, a random 12-character password drawn from upper-case letters, lower-case letters and digits has 62 to the power of 12 combinations, about 3.2 x 10^21. At a billion guesses a second, trying them all would take roughly 100,000 years. Use the tool only on documents that are yours, or that you are authorised to open.

How to remove a password from a PDF

1. 1
   Drop the protected PDF onto the box, or click it to browse. A message tells you the file is encrypted and that you will need its password; that is expected.
2. 2
   Type the password into the box labelled Password (leave empty if the file opens without one). The box shows what you type, so make sure nobody is looking over your shoulder.
3. 3
   Press Unlock PDF. The first run loads the PDF security engine, which is a few megabytes, so allow a moment.
4. 4
   When Done appears, read the note under it. Password removed. The file now opens without one means the job worked.
5. 5
   Press Download to save unlocked.pdf, then open it in any viewer. It should open straight away with no prompt.

Open password or permissions password: which one do you have?

A PDF can carry two separate passwords, and they behave very differently. The result depends on which one the file has.

Passwords are case-sensitive. A statement that expects ANIT0703 will not open with anit0703. The tool trims spaces from the start and end of what you type, so a password that itself begins or ends with a space will not match.

How the unlocking works

The job is done by qpdf, a well-known open-source PDF tool, compiled to WebAssembly so that it runs inside your browser tab. The tool passes it your password and asks it to decrypt the file. It decrypts the objects that make up the document and writes them out again without the encryption wrapper.

Nothing is re-drawn. Pages are not turned into pictures, so text stays selectable and searchable, and bookmarks and form fields come through as they were. That is the difference between decrypting a file and printing it to a new PDF. One thing does not survive any rewrite: a certificate-based digital signature inside the file will no longer verify afterwards, because the bytes it protected have changed.

Because qpdf rebuilds the file, the size can move a little. In a test with the same qpdf engine, a 12-page PDF of 12,646 bytes came out of AES-256 encryption at 13,374 bytes. Unlocking it with the right password gave a 12-page file of 12,500 bytes. With a wrong password, or none, the engine stopped with an invalid password error and wrote nothing.

A worked example: from locked statement to upload-ready file

Say your bank emails a 12-page account statement and says the password is the first four letters of your name in capitals followed by your date of birth as day and month. For Anita, born on 7 March, that is ANIT0703, eight characters in all.

Drop the statement into the tool, type ANIT0703 and press Unlock PDF. You get unlocked.pdf, still 12 pages, with its text intact. Typing anit0703 would have failed, because the case differs.

The loan portal then wants the statement together with two other documents in a single file under 2 MB. Merge the three files in the order the portal lists them, then compress the result. In the workflow builder you can put the Unlock with a password step first and the compression step after it, so the chain runs in one go and the password is not saved with the workflow.

Which protections the tool can open

PDF encryption comes in several generations: the older RC4 schemes with 40-bit or 128-bit keys, and the newer AES schemes with 128-bit or 256-bit keys. qpdf reads all of them, so the age of the file is rarely a problem. The same engine produces the AES-256 encryption used by the Protect PDF tool, which means a file locked there can be unlocked here with the same password.

What it cannot read is anything that is not ordinary PDF password encryption: a file wrapped by a document-security product, a file that only opens in one vendor's app, or a download that is really a different format with a .pdf name. In those cases the problem is not the password.

If the file still will not open

• Retype the password by hand rather than pasting it. Pasted text sometimes carries a trailing space or a hidden character.
• Check Caps Lock and watch for look-alike characters such as a capital O and a zero, or a lower-case l and a one.
• Look for a second message from the sender. Some organisations send a different password for each document.
• Ask the sender to reissue the file, or download it again from their portal, if you are unsure the password belongs to this file.
• If the tool reports a damaged file rather than a wrong password, the file may be corrupted and needs repair before any unlocking.

Reading the result

Under Done you see the file name and one of two notes. If you typed a password, the note says Password removed. The file now opens without one. If you left the box empty, it says Restrictions removed, and adds that a file which also needed a password to open should be run again with that password entered.

Verify the copy in a viewer. It should open without a prompt, the page count should match the original, and the document properties should no longer list printing or copying as disallowed. Your original stays locked. Unlocking produces a new file and changes nothing about the one you uploaded.

Common reasons to unlock a PDF

• Bank, credit card and demat statements that must be attached to a loan, visa or tenancy application, where the portal rejects an encrypted file.
• Mutual fund consolidated statements, insurance policy documents and Form 16 copies sent with a password by email.
• Files you want to merge into one pack or reduce in size for a size-limited upload.
• Documents you want to turn into an editable Word file.
• Old archives you protected yourself years ago and now want to use without retyping the password.

Tips before and after unlocking

• Copy the password from the email or message that carried it, or type it slowly. A single mistyped character is the most common reason for a refusal.
• Banks and fund houses usually build the password from details they hold about you, such as part of your name and a date. The message that delivered the file normally explains the pattern.
• Keep the locked original. Work on the unlocked copy, and delete the copy when you finish if it holds sensitive figures.
• Once you are done, add a new password if the document is going to anyone else.
• To do several jobs in one go, start a chained workflow with the Unlock with a password step first, then compress, stamp or number the file in the same run.

Mistakes to avoid

• Leaving the Password box empty for a file that needs one to open. The run stops and no file is produced; enter the password and run again.
• Entering one password for several files. When you add several PDFs, the same password is tried on each. Files with different passwords must be run separately.
• Unlocking the wrong kind of lock. If the file already opens and you only want to copy text or print it, the restriction remover is simpler.
• Expecting a digitally signed document to stay valid after unlocking.
• Unlocking files that belong to someone else without permission. Doing that may breach a confidentiality agreement or the law.

Limits

A file over 100 MB is refused. Files locked by a separate rights-management system, or wrapped in an app's own container rather than the standard PDF encryption, cannot be opened by this tool. If the file turns out to be damaged rather than locked, try repairing the file first.

Everything runs in your browser. Your PDF and your password are not sent to a Jobsixo server. The password lives only in the page while you work, and a workflow saved in this browser leaves it out.