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Sign PDF — free, nothing uploaded
Add your signature to a PDF right here in your browser. Draw it or upload an image, place it on the page, and download — your PDF never leaves your device. No sign-up, no watermark.
Choose a PDF or drop it here
One PDF · rendered on your device
Your PDF never leaves this device — nothing is uploaded.
Truly private
Your PDF and signature are handled on your device. No upload, no server copy — verifiable in your browser’s network tab.
Instant
No upload and no queue. Draw, place, download — the signed PDF is ready in seconds.
Free, no catch
No watermark, no sign-up wall, no daily limit. Free because your device does the work.
Draw or upload
Sign with your finger or mouse, or drop in a signature image — then move and resize it exactly.
How to sign a PDF
- 1
Open your PDF
Tap the box (or drag a PDF in). It is rendered on your device so you can see every page — nothing is uploaded.
- 2
Add your signature
Draw your signature on the pad, or upload a signature image (a transparent PNG works best).
- 3
Place it on the page
Drag the signature where you want it and drag the corner to resize. Choose the page first if there is more than one.
- 4
Apply and download
Tap Apply & download to get your signed PDF. It was signed entirely in your browser.
Frequently asked questions
- Is my PDF uploaded to a server?
- No. This signing tool runs entirely in your browser — your PDF and your signature never leave your device and we never see them. You can verify it in your browser’s network tab: no files are transferred.
- Is the sign PDF tool really free?
- Yes — completely free, with no watermark, no sign-up and no daily limit. Sign as many PDFs as you like, right here.
- Can I draw my signature or use an image?
- Both. Draw your signature with a mouse or finger on the pad, or upload a signature image (a transparent PNG looks best). Either way you can move and resize it on the page before applying.
- How do I place the signature exactly where I want it?
- After adding your signature it appears on the page preview. Drag it to position it, and drag the corner handle to resize. Pick the page you want first if your document has more than one.
- Is a signature added this way legally valid?
- This tool places a visible signature image on the page — the same as signing a printout by hand and scanning it back. It does not add a cryptographic digital certificate. For many everyday documents a visible signature is enough; for formal e-signature workflows with an audit trail, use ScanPix document requests.
- Does it work on my phone?
- Yes. It works in the browser on Android and iPhone — open your PDF, draw your signature with your finger, place it and download the signed file. No app required.
Need signatures back from others?
This tool adds your own signature to a PDF. To send a document and collect a signed copy back — tracked and organised, without email attachments — ScanPix document requests and e-signatures do exactly that in a private workspace.