Remove the digital signature from a PDF
A signed or certified PDF is built to resist change: readers lock editing, and any edit breaks the signature and flags the file as altered. If the document is yours, this removes its digital signatures — the certificate data and the visible stamp — and gives you back an ordinary PDF you can edit. It runs in your browser, so the file never leaves your device.
100% private: files are processed in your browser and never uploaded to any server.
How it works
- Drop the signed PDF into the box above.
- If the PDF asks for a password to open, type it; otherwise leave the field empty.
- Click “Remove signature” and download the unsigned copy.
What a digital signature really is
A digital signature is not the picture of a signature you see on the page. It is a block of cryptographic data stored inside the PDF: a fingerprint of the document's bytes, sealed with the signer's private key, along with their certificate. When you open the file, your reader recomputes that fingerprint and checks it against the seal. If a single byte has changed, the check fails and the reader warns that the document was altered after signing.
The box that says “Digitally signed by…” is only the signature's appearance — a stamp that points at the cryptographic data. A certification signature adds one more layer: it records which changes the author permits afterwards, and readers enforce that by locking editing.
What removing the signature does
The tool opens the document — with its password, if it has one — and removes every signature field together with its visible stamp. It also removes the document-level markers that make readers treat the file as signed or certified, and rewrites the file so the old signature data, including the signer's certificate, is no longer inside it. The pages themselves are left untouched: text, images, form fields and bookmarks stay exactly as they were.
When it makes sense
Removing a signature is the right move when the signature is in the way of legitimate work on your own document:
- A template or form you certified yourself, which you now need to update.
- A draft that was signed too early, or with the wrong certificate, and has to be signed again.
- A signed PDF you need to merge, compress or annotate — changes that would break the signature anyway and leave a document flagged as altered.
- An old form with Adobe Reader “extended features” that now shows warnings in every reader.
Keep the signed original
The unsigned copy proves nothing about who signed or when — that evidence lived in the signature you removed. Keep the original signed file wherever you keep important records, and treat the unsigned copy as a working document. If the edited version needs to be signed again, sign it with your certificate software, or add a visual signature with the Sign PDF tool when a visual signature is all that is asked for.
Frequently asked questions
Will the document still count as signed?
No. The copy you download is an ordinary unsigned PDF: signatures, certification and their visible stamps are gone, and no reader will show it as signed. Keep the signed original if you may ever need to prove the signature.
Can I remove a signature from a document someone else signed?
Only if you are entitled to modify that document. Removing a signature does not change what the original proves, and passing off an altered copy as the signed version can be fraud. Use it on documents you own — a template you certified, a draft signed too early, a copy you are allowed to edit.
Does it remove a handwritten signature drawn on the page?
No. It removes digital signatures, which live in the structure of the file. A scanned signature, or an image placed with a signing tool, is part of the page itself rather than a digital signature.
Is my document uploaded?
No. qpdf compiled to WebAssembly and a PDF library do the work inside your browser. The document, and any password you type, never leave your device — you can even use the tool offline.
The PDF is signed and also asks for a password. Does this work?
Yes. Type the password it opens with and the tool decrypts it before removing the signatures. If it only restricts printing or editing, leave the password empty. It cannot open a file whose password you do not know.