ConvertWarp

Sign PDF

Draw or choose a picture. It is placed on the last page. This is not a digital certificate.

PDF tools use pdf-lib (MIT).

About this tool

Sign PDF places a drawn mark or a PNG/JPEG picture on the last page, lower left. It looks like a signature on paper. It is not a PAdES/certificate digital signature, not legally equivalent to an e-sign product, and not encryption.

Use it for informal packets where a wet-ink scan would have been enough. Protect PDF if you need an open password. Watermark if you need the same words on every page.

The PDF is opened locally; the image is embedded and drawn at a capped size on the last page. 50 MB for the PDF and for the picture. Encrypted PDFs are not opened. Position is not a freeform drag in v1.

How to sign a PDF

  1. Choose a PDF. The mark goes on the last page only.
  2. Draw a mark or choose a PNG/JPEG.
  3. Place it on the last page and download.

50 MB. Last page only, fixed corner. Not a digital certificate. Password-protected inputs refused.

FAQ

Is the PDF or the autograph uploaded?
No. Embedding is local.
Is this legally binding?
That depends on your jurisdiction and the document. This tool does not issue certificates or identity checks.
Can I sign page 1?
Not in this version. Split, sign the piece, merge — or wait for a later placer.
SVG or HEIC signatures?
PNG or JPEG only.
Can someone move the image out?
Yes, with a PDF editor. This is a stamp, not DRM.

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