Add a visible signature mark
Place a drawn or image-based signature on a PDF before sending a working copy.
PDF
Drop a PDF file hereAbout Sign PDF
Sign PDF lets you create a handwritten signature with a mouse or touch screen, or use an existing signature image. Choose the PDF page, position the signature directly on the page preview, resize it and create a signed PDF.
Common use cases
Sign forms visually
Position a signature appearance in a designated area of a form or document.
Prepare approval copies
Create a PDF showing a visible sign-off for informal or internal workflows.
How it works
1
The PDF is opened in the browser and you select the page and position for the signature appearance.
2
The signature graphic is placed onto the chosen PDF page.
3
A new PDF containing that visible mark is generated for download.
Privacy & file handling
Signature placement is browser-side
The supported signature workflow modifies the PDF on the device rather than requiring the document and signature image to be uploaded to Zavilo.
Limitations and important notes
- A visible signature image is not the same as a cryptographic digital signature or certificate-based identity verification.
- Legal acceptance of electronic signatures depends on jurisdiction, context and the signing process.
- Always verify the final page, position and document contents before sending a signed copy.
Visible signature vs digital certificate signature
| Feature | Provides | Does not necessarily provide |
|---|---|---|
| Zavilo visible signature | A visible signature mark on the PDF | Cryptographic signer identity or tamper-evident certificate validation |
| Certificate-based digital signature | Cryptographic validation when implemented by a compatible signing system | A simple image-only workflow |
How to use Sign PDF
- 1
Choose the PDF you want to sign.
- 2
Draw your signature or choose a PNG/JPG signature image.
- 3
Choose the PDF page where the signature should appear.
- 4
Drag the signature over the page preview and resize it with the corner handle.
- 5
Apply the signature and download the signed PDF.
Tips for better results
- A transparent PNG signature image gives the cleanest result when using an existing signature.
- Use the page preview to place the signature precisely near a signature line or approval box.
- Keep the signature box inside the page boundary before creating the final PDF.
Frequently asked questions
Can I draw my signature with a mouse?
Yes. Use the drawing pad with a mouse, touchpad or touch screen, then place that signature on the PDF.
Can I use a scanned signature image?
Yes. You can choose a PNG or JPG signature image instead of drawing a new signature.
Can I choose where the signature appears?
Yes. Select a PDF page, drag the signature to the desired location and resize it before applying it.