Sign PDF
Draw a freehand signature and place it on any page as a visual image overlay.
Category: Edit
Processing: On-device
Quota bucket: Core
Open interactive tool: /tools/sign
How to use Sign PDF
- Upload a PDF and draw your signature on the canvas using your mouse or finger.
- Select the target page number where the signature should appear.
- Adjust horizontal and vertical position sliders to place the signature precisely.
- Choose the signature width as a fraction of the page width (20% to 50%).
- Click Place signature and download the signed PDF.
Tips
- Draw slowly for smoother signature strokes; the canvas captures at retina resolution.
- Position the signature near the bottom-right for standard document signing conventions.
- Clear and redraw the signature if the first attempt does not look right.
Privacy: Your files never leave your browser. All processing runs on-device.
Full privacy model
Frequently asked questions
What does Sign PDF change?
It draws a freehand signature and embeds it as a PNG image on the selected PDF page.
Is Sign PDF private by default?
The signature is drawn and embedded entirely in your browser. Nothing is uploaded.
What does Sign PDF not protect?
It is a visual overlay only. It does not provide tamper evidence or cryptographic verification.
Limitations
- This produces a visual image overlay, not a cryptographic digital signature with legal non-repudiation.
- The signature PNG is embedded in the page and can be visually copied from the output.
Related tools
Page Editor
Reorder, rotate, delete, and extract pages with local thumbnail previews.
Add Watermark
Stamp each page with custom text watermark for internal or draft sharing.
Add Page Numbers
Insert page numbers consistently across the document.
Crop PDF
Trim margins from all or selected pages by percentage or absolute points.