About Sign PDF
Places a visible signature image on a PDF page using PyMuPDF. Three input methods: Draw — freehand signature on a canvas with full touch support; Type — typed name rendered as a signature image via ImageMagick; Upload — use a pre-drawn signature image. Control the placement page (first, last, or a specific page number), horizontal position, vertical position, and signature size. Optionally embed cryptographic metadata (signer name, email, reason, location, and date) using an auto-generated or custom certificate.
Drop your PDF here or click to browse
Single PDF file • Max 50 MB
Draw with mouse or touch
Transparent PNG gives best results
![Signature preview]()
👁 Preview — signature overlaid on page 1 at selected position & size
Visual Overlay Only
This adds a visible image on the PDF. It is not a cryptographic digital signature and cannot verify authenticity or detect tampering. Enable the option below to also embed a cryptographic signature.
About Certificate Trust
A self-signed certificate provides tamper-evidence — Adobe Reader will show the signature is mathematically valid but mark the signer as unknown (no trusted CA). For legally binding signatures accepted by banks, courts, or regulated workflows, use a certificate issued by a trusted CA (e.g. DocuSign, GlobalSign, DigiCert).
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