Sign PDF Online Free
Add a signature image overlay to any page of your PDF document.
Files never uploadedInstant results100% freeWorks on mobile
How to Use
- 1Upload your PDF file by dragging it into the drop zone.
- 2Upload your signature image (PNG with transparent background works best).
- 3Select the page, position (X, Y), and size for your signature.
- 4Click Sign PDF and download your signed document.
Frequently Asked Questions
What image formats are supported for signatures?
You can use PNG or JPG images. PNG with a transparent background is recommended for the best results as it blends naturally with the document.
Can I place the signature on a specific page?
Yes. After uploading your PDF, you can select which page to place the signature on using the page selector.
How do I position the signature?
You can set the X and Y coordinates in PDF points (72 points = 1 inch). Adjust the width and height to resize the signature overlay.
Is my file uploaded to a server?
No. All processing happens locally in your browser using pdf-lib. Your files never leave your device.
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