Add Signature to PDF
Add your signature to a PDF, directly in your browser
Two first-class ways to sign: place an existing signature image (a photo or scan of your handwritten signature, with the white background removed) or draw a new signature with a mouse, trackpad, stylus or finger.
- 1. Choose
- 2. Prepare
- 3. Process
- 4. Review & export
Add Signature to PDF runs locally in this browser tab. Known limits: Adds a visual signature. It does not create a certificate-based digital signature
You then place the signature on the page itself: drag it where it belongs, resize it, duplicate it across pages, add a caption or the date, and export. The PDF and the signature image are processed on your device and never uploaded.
This adds a visual signature: an image placed on the page. It is not a certificate-based digital signature and carries no cryptographic validity.
What this tool does and does not change
- Preserved where the source file allows it: text, vectors, links, annotations, forms, bookmarks, metadata.
- Adds a visual signature. It does not create a certificate-based digital signature
How PDF Atelier handles confidential documents
This tool runs on your device, and the difference between hiding, removing and cleaning information matters for confidential files. Read the PDF Atelier security model or see how privacy works.
Questions about Add Signature to PDF
- How do I add my signature to a PDF?
- Open the PDF, create your signature by placing a signature image or drawing one, then click the page to position it. Drag to move it, use the corner handle to resize, then export the signed PDF.
- Is my document uploaded anywhere?
- No. The PDF and your signature image are processed in the browser on your device. Nothing is sent to a server.
- Is this a digital signature with a certificate?
- No. This tool places a visual signature — an image on the page. A certificate-based digital signature binds a cryptographic identity to the file and requires a signing certificate or accredited signing service.
- Can I reuse the same signature later?
- Only if you opt in. When you enable it, the signature is stored locally in this browser and you can delete it at any time. By default nothing is kept.
- Can I sign on a phone or tablet?
- Yes. You can draw with your finger or a stylus and place the signature with a tap; the workspace is designed for small screens too.
- How do I make the signature permanent?
- Use Flatten PDF after placing it, so the signature becomes part of the page content.
- Can I sign a PDF that is already digitally signed?
- Adding content to a signed document invalidates the existing signature. PDF Atelier warns you when it detects signature indicators.
Related tasks
- Edit PDF fill or add other information before signing.
- Protect PDF password-protect the signed copy.
- Redact PDF remove sensitive information before sharing.
- Add Text to PDF add dates, names or initials.