Sign a PDF Online: Draw, Type, or Upload Your Signature
Place your signature on one page of a PDF and download the signed file, with links, bookmarks and form fields left intact. What you get is a signature image stamped into the page content, not a certificate-based cryptographic signature, and the stamping step runs on our servers after the file is uploaded.
Drop your file here
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What this tool does, and what it is not
A PDF page is a fixed layout, and most readers give you no way to put ink on it, which is why signed documents still take the detour through a printer and a scanner, losing the searchable text layer.
This tool keeps the original page and adds one thing to it. You create a signature in the browser in one of three ways: draw it freehand, type your name and have it rendered in a handwriting-style script, or upload a PNG, JPG or WebP picture of a signature you already have. That becomes a PNG image. The page preview you position it on is rendered from your own PDF in the browser, and when you submit, the PDF, the signature image and a single placement (page number, position, size) go to our servers, where pdf-lib embeds the image and draws it on that page. One signature, on one page, per run.
The rest of the document comes through unchanged in the ways that usually matter: bookmarks, clickable links, fillable form fields and the document title are kept, and the text stays selectable. Two caveats: the PDF is rewritten on save, so the Producer and Creator metadata become pdf-lib and any existing cryptographic signature in the file stops validating, and the output is a plain PDF, not PDF/A and not a tagged, accessible PDF.
This fits the everyday case behind searches like sign document online and pdf signature online: an NDA, a rental form or a one-page agreement that the other side will accept with a visible signature on it. It does not fit a workflow that requires identity verification or a tamper-evident seal: there is no certificate, no signature field and no /Sig entry in the output, so nothing in the file proves who signed it or that the page has not changed since. If your counterparty asks for a qualified or certificate-based signature, use a dedicated e-signature provider instead.
How to sign a PDF here
- 1
Upload one PDF. Only .pdf is accepted, one file per run, up to 50 MB without an account, 100 MB with a free account, 200 MB on Plus and 1 GB on Pro.
- 2
If the file asks for a password when it opens, remove that password first with our PDF password-removal tool; the signing step cannot read encrypted PDFs. If the PDF is truncated or throws a parse error, run Repair PDF first.
- 3
Build your signature: draw it with a mouse, trackpad or finger; type your name to have it rendered in a script style; or upload an image of your signature. A PNG with a transparent background sits cleanly over the page, while a JPG brings its own white rectangle with it.
- 4
Choose the page in the preview and drag the signature onto the spot you want. Drag or resize it at least once, even slightly: that is what registers the preview scale, and placement is more reliable afterwards.
- 5
Submit the file. Stamping runs on our servers; the signing step itself is quick, so the wait is mostly the upload.
- 6
Download the result and open it to check the position. To sign a second page, or add a second signature, upload the downloaded file again and repeat.
What you get
- Three ways to sign: freehand drawing, a typed name rendered as handwriting, or an uploaded PNG, JPG or WebP signature image.
- The page preview is rendered in your browser from the actual PDF, so you position the signature against the real page, not a generic template.
- Keeps links clickable, bookmarks intact, form fields fillable and the document title in place; page text stays selectable.
- No rasterizing: the rest of the page is untouched and only the signature is added as an embedded image.
- PDF in, PDF out, with the original file name; no account needed for files up to 50 MB.
- Accepts single-page and long documents alike; the signature goes on the page number you pick.
Frequently asked questions
Is this a legally binding digital signature? ▼
No. The output carries a signature image stamped into the page content. There is no certificate, no signature field and no cryptographic hash, so the file cannot prove who signed it or that it has not been edited since. That is enough for many routine documents where the other side simply wants to see a signature. For a certificate-based or qualified signature, use an e-signature provider that issues certificates.
Can I sign several pages, or add two signatures? ▼
Each run places one signature on one page. To add more, download the signed PDF, upload it again and place the next signature. Repeat as many times as you need; every pass keeps the previous stamps.
My signature landed in the wrong place or came out too large. Why? ▼
Position is taken from the preview, and the scale is recorded when you move or resize the signature. If you drop it once and submit without nudging it, the coordinates can be read as screen pixels instead of page points and the signature shifts or changes size. Drag or resize it before submitting. Pages that carry a rotation flag are also not compensated, so on a rotated page check the output and adjust the placement on a second pass.
I get a password-protected or "document is encrypted" error. ▼
A PDF that needs a password to open is rejected before signing, with a message pointing you to our PDF password-removal tool. A PDF that opens freely but carries an owner (permissions) password also fails here, because the signing library refuses encrypted input; strip that owner password first, then sign the decrypted copy.
Can the signature be removed again? ▼
Yes. It is an image drawn into the page, so any PDF editor can select and delete it, just as it could delete a stamp or a logo. Treat it as a visible mark, not as protection against editing. Your original file on your computer is untouched.
Does the typed signature keep its font inside the PDF? ▼
The typed name is rendered to an image in the browser before it is sent, so the script look is baked into the picture rather than stored as editable text. That also means it cannot be re-typed or restyled in the finished PDF.
What happens to my file after signing? ▼
The PDF is uploaded to our servers for the stamping step, over HTTPS. Your upload is deleted as soon as the job finishes, and the signed output can be downloaded for about four hours through a random, unguessable link before it is deleted automatically. The link is not single-use, so treat it as private. We do log file names, sizes and outcomes for monitoring, and signed-in accounts keep a conversion history entry.