Sign PDF Online
Add your signature to a PDF for free — draw, type or upload it, place it on any page and download. No upload, no sign-up.
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Runs entirely in your browser. Your files and text are never uploaded to our server.
- Instant results
- 100% free
- No sign-up
- Private
Sign PDF lets you add your signature to any PDF without printing, signing and scanning. Draw your signature with a mouse or finger, type your name in a handwriting style, or upload a photo of your signature — then click on the page where it should go and download the signed file.
The PDF is opened and signed entirely in your browser using the open-source PDF.js and pdf-lib libraries, so the document never leaves your device. You can place your signature on several pages and add today’s date under it.
More about Sign PDF OnlineHow to use, good to know & FAQ
How to use Sign PDF
- Choose the PDF you want to sign.
- Create your signature: draw it, type it or upload an image of it.
- Click or tap on the page preview to place it, drag it into position and set the size, then press Download signed PDF.
Good to know
- Use the page buttons to move through the document and sign more than one page.
- Drag a placed signature to move it; select it and use the arrow keys for fine adjustments, or press × to remove it.
- Uploaded signature photos work best on plain white paper — the white background is made transparent automatically.
- This adds a visual electronic signature. It is not a certificate-based digital signature that proves the file has not been changed.
- Password-protected PDFs must be unlocked before they can be signed.
Frequently asked questions
Is it safe to sign a PDF here?
Yes. The file is processed on your device and is never uploaded to our server. Close the tab when you are done and nothing is kept.
Is an electronic signature legally valid?
In many countries a simple electronic signature can be legally valid — for example under the US ESIGN Act and the EU eIDAS Regulation — but some documents need a handwritten, witnessed or qualified digital signature. Check what the other party or your local law requires. This is general information, not legal advice.
Can I sign on my phone?
Yes. Draw your signature with your finger, then tap on the page to place it. Pinch-zooming the page is not needed — use the size slider instead.
Can other people sign the same PDF?
Yes. Send them the signed file and they can open it here and add their own signature in a different spot.
When to use Sign PDF
- Signing a rental agreement, offer letter or contract sent by email
- Signing school or office forms without a printer
- Adding initials to every page of a document
- Approving invoices and delivery notes
📘 Read the guide: How to Sign a PDF Online for Free