Sign PDF Online
Sign PDF documents online for free. Draw, type or upload your signature, place it on the page and download the signed PDF – privately in your browser.
Your file stays on your device. Sehnna does not upload or store your PDF.
This tool adds a visual signature to your PDF. It is not a certified digital signature or identity verification service.
Your file stays on your device. Sehnna does not upload or store your PDF.
- No signup required
- Files stay on your device
- Browser-based conversion
- Fast download
- Free to use
How it works
How to sign a PDF online
- 1
Upload your PDF.
- 2
Draw, type or upload your signature and place it on the page.
- 3
Download your signed PDF.
Supported file types: PDF · No signup required
Three ways to sign a PDF online
- Draw: sign with your mouse, trackpad or finger – just like on paper.
- Type: enter your name and choose a handwriting style.
- Upload: use a photo or scan of your signature. A white background is made transparent automatically.
Sign PDF documents with several pages
Drag the signature onto the signature line and pull the corner to make it bigger or smaller. You can add it to several pages – for example to initial every page of a contract – before downloading one signed PDF.
Fill and sign a PDF form
Sehnna adds signatures, not text. If your PDF is a fillable form, fill in the fields in your PDF viewer first (for example in your browser or the Preview app), save the file, then sign it here. The filled-in values are kept when you add your signature.
More ways to sign
Need your signature as an image for other documents, or want to sign on your phone? These guides help.
About PDF files
- PDF (Portable Document Format)
- PDF files look the same on every device and are the standard for invoices, statements, contracts and reports. Digital PDFs store real text; scanned PDFs store images of pages. All PDF tools →
Privacy: your files stay on your device
Your files stay on your device. Conversions run in your browser. Sehnna never uploads, stores or reads your documents – there is no server that receives them, no account and no email address.
- Your files stay on your device
- No signup required
- Browser-based conversion
Sign PDF – frequently asked questions
Is this Sign PDF tool free?
Yes. You can sign PDF files online for free on Sehnna, with no signup, no watermark and no limit.
Are my files uploaded?
No. Your file stays on your device. Sehnna does not upload or store your PDF – the signature is added in your browser.
Can I draw my signature?
Yes. Draw your signature with a mouse, trackpad, stylus or your finger on a phone or tablet.
Can I type my signature?
Yes. Type your name and choose one of three handwriting styles.
Can I fill and sign a PDF online?
You can sign any PDF here. To fill in form fields, use your PDF viewer first and save the file – the values are kept when you add your signature on Sehnna.
Is this a certified digital signature?
No. This tool adds a visual signature to your PDF. It is not a certified digital signature or identity verification service. If a document requires a qualified or certified electronic signature, use a dedicated e-signature provider.
Can I use it on mobile?
Yes. Sehnna works in the browser on iPhone and Android. You can draw your signature with your finger and move it into place with touch.