Sign PDF
Draw your signature and place it on the page — no printing required.
Drop your PDF here, or click to select
Single PDF file · Max 100MB
Draw your signature and stamp it onto a PDF
This tool replaces the print-sign-scan loop. You draw your signature once on screen, then place that drawn image onto a page of your PDF and download the result. The signature is rendered as a transparent PNG and stamped onto the page you choose, so the rest of the document is untouched.
When this is the right tool
- Returning a rental or NDA agreement. A landlord or counterparty sends a PDF, you sign the last page bottom-right, and email it back without owning a printer.
- School and clinic forms. Permission slips, intake forms, and consent sheets that ask for a signature on a specific line — drop your signature there and you're done.
- Countersigning a quote or invoice. Add your name to a vendor's PDF before approving payment.
- Initialing a multi-page contract. Sign each page one at a time: run the tool, place a small signature on page 1, download, re-upload, place it on page 2, and so on.
What "electronic signature" means here
There are two different things people call a "PDF signature." This tool does the first:
- An electronic (image) signature — a picture of your handwriting placed on the page. It is what most everyday agreements, forms, and internal approvals accept. That is exactly what this tool produces: your canvas drawing becomes a PNG, and PDFBox stamps it onto the page at the position and scale you set.
- A cryptographic digital signature — a certificate embedded in the file that ties the document to your identity and proves it hasn't changed since signing (the kind Adobe shows with a green check and an audit trail). This tool does not create that. There is no certificate, no timestamp authority, and no tamper-evidence record.
If a court filing, bank, or government portal specifically requires a certificate-based digital signature, this image signature won't satisfy that requirement — use dedicated certificate software instead.
Practical tips
- Draw bigger than you think. The canvas downsamples cleanly, so a large, confident stroke reproduces better than a cramped one. Use the size slider to shrink it on the page afterward.
- Match the slot. The six presets (the four corners plus top-center and bottom-center) cover most signature lines. Set the scale low first, see where it lands, then nudge it up.
- One page per pass. The tool stamps a single page per run. For documents needing a signature on several pages, repeat the upload-place-download cycle for each page.
- Lock it down afterward. Because the signature is a stamped image, anyone can still edit the PDF. If you want to discourage tampering, follow up with Flatten PDF (collapses layers and form fields) or Protect PDF (adds an AES password so it can't be opened or changed without the password).
How it differs from the related tools
- [Edit PDF](/edit-pdf) stamps a transparent overlay too, but it's the general annotate/highlight/redact tool — reach for it when you need text notes, boxes, or to black something out, not a single signature.
- [Watermark PDF](/watermark-pdf) repeats diagonal text across every page; it's for "DRAFT" or "CONFIDENTIAL" marks, not a one-off signature.
- [Protect PDF](/protect-pdf) and [Flatten PDF](/flatten-pdf) are the natural next steps after signing, as above.
- [Merge PDF & Images](/merge-pdf-images) is the tool to use if you've already signed on paper and scanned it as an image — it adds that image as a new page rather than stamping a drawn mark.
How it works
- Upload or drop the PDF you need to sign.
- Draw your electronic signature in the box using a mouse, trackpad, or finger.
- Select the page, position, and size for the signature.
- Click Sign PDF and download the signed document in seconds.
Frequently Asked Questions
Is this an electronic signature or a cryptographic digital certificate signature?
It is an electronic (image) signature: your drawn signature becomes a transparent PNG that is stamped onto the page, which most everyday forms, NDAs, and approvals accept. It does not embed a certificate, timestamp authority, or tamper-evidence record, so it won't satisfy a portal that specifically requires a certificate-based digital signature.
Can I sign more than one page in a single pass?
No — the tool stamps one page per run. To initial or sign a multi-page contract, place the signature on page 1, download, then re-upload the result and place it on the next page, repeating for each page.
Can I control where the signature lands and how big it is?
Yes. After drawing, you pick the page and one of six position presets (the four corners plus top-center and bottom-center) and adjust scale with a slider. Set the scale low first to see where it lands, then nudge it up.
Can I reuse the same signature across many documents?
Not automatically — the drawing isn't saved between sessions, so you redraw it each time. With practice your signature becomes consistent enough that this takes only a few seconds.
Will the signature stay sharp if someone zooms in?
It's a raster image, so at extreme zoom you'll see the pixels of your stroke rather than crisp vector lines. At normal reading and print sizes it looks like ink; drawing larger and scaling down on the page keeps it clean.
Can the stamped signature be edited or removed afterward?
Because it's a stamped image layer, anyone can still edit the PDF. To discourage tampering, follow up with Flatten PDF to collapse layers or Protect PDF to add an AES password.