Sign PDF Online — Add a Visible Signature Image
Privacy-First PDF Tools
Drop PDF files here
or click to browse
Supports: PDF
Privacy-First PDF Tools
FAQ
Does this create a certificate-based digital signature?
No. PDFGem adds only a visible image. It does not verify identity or legal validity, create an audit trail or timestamp, or provide cryptographic tamper detection. Acceptance depends on the document, jurisdiction and process.
Can I draw my signature with a mouse?
Yes. Use the drawing canvas to sign with your mouse, trackpad, or touchscreen.
What image formats are supported for signature upload?
You can upload PNG or JPEG signature images. PNG with transparent background works best.
Can I place signatures on multiple pages?
Each operation places one signature image on one selected page. To add another, download the result and select that new copy again.
Can I resize the signature?
Yes. Use the Signature Size slider to adjust the width of your signature on the page.