Put a signature onto a PDF — upload a photo of one, or write it on screen. This is a visual signature, not a cryptographic one; the difference matters.
Upload a signature image, or draw one with the mouse or a touchscreen.
Drag it into position, size it, and download.
This one needs an upload, and is deleted afterwards
Browsers cannot do this calculation, so the file goes to our server. It is deleted automatically 60 minutes after the job finishes, and the working copy lives in a memory filesystem that is wiped whenever the server restarts.
We do not log file names and do not log file contents — that is a hard rule in our engineering standards, not a setting.
What it does — and what it doesn't
This is not a digital signature and carries no proof of authenticity. It is a picture laid on the page — anyone can copy, move or remove it. The response always says so.
To check whether a PDF someone sent you was really signed, use Verify signature.
We do not offer the signing side, and the reason is key custody. Signing needs a private key; asking you to upload a `.p12` certificate means asking for your most sensitive credential. For a product built on "your file is gone in 60 minutes", that is the opposite promise.
A signature you draw is not stored in your browser. Draw it again next time — convenience is not worth leaving your handwriting on a machine.
Common questions
So what is it actually for?
Internal approvals, returning a confirmation, any form that needs a visible signature. That is how a great deal of paperwork really works — just do not mistake it for proof.
Is a drawn signature good quality?
The strokes become a transparent PNG with the empty border trimmed, so it scales up without a white box around it.
Can I sign many files at once?
One at a time. The position differs on every document, and batching mostly puts signatures in the wrong place.
