Docify

By Docify

PDF Signer Limits: Visual Stamp, Not eSign

• 5 min read

The slug says “electronically,” but Docify's PDF signer is a thin browser wrapper around pdf-lib: embedPng of a canvas drawing, then drawImage on page 1 at x: 50, y: 50 (150×50 pt). It is not an ESIGN or eIDAS product, not a legally binding e-signature service, and not an audit trail. Nothing is uploaded.

The live PDF signer stamps a picture. It does not collect signer identity or claim legal effect. For the generate pipeline, see stamp a drawn signature on page 1. For PKCS#7 / PAdES and the mouse-only pad, see not a digital certificate signature.

What the old “electronic signature” copy overstated

  • Legal effect. ESIGN (US) and eIDAS (EU) are real legal frameworks. This page does not implement them, does not store consent evidence, and does not say a stamp from Docify is binding.
  • Audit trail. There is no who / when / where log. The file is whatever pdf-lib writes from the canvas PNG.
  • Speed and cost. You do avoid a printer, but that is not a shipping-cost product claim and not a reason to treat the PNG as a qualified electronic signature.

What you actually get

  • A local application/pdf picker and an iframe preview via URL.createObjectURL.
  • A 500×200 mouse pad. Sign and download is disabled until both a PDF and canvas.toDataURL() exist.
  • embedPng + drawImage on getPages()[0] at 50, 50 (150×50 pt). Download name is always signed-document.pdf.

Stamp locally — no e-sign claim

Visual PNG on page 1. Not a legally binding electronic signature product.

Use PDF Signer →

FAQ

Is this a legally binding electronic signature?
This page does not claim that. Sign and download embeds a PNG of the canvas drawing with pdf-lib embedPng and drawImage. It does not create an ESIGN or eIDAS signature, attach a certificate, or prove identity. Treat it as a visual stamp only.
Does the tool create an audit trail?
No. There is no signer identity, timestamp field, IP log, or who-signed-when record. The download is signed-document.pdf with a 150×50 pt PNG on page 1. The old “audit trail showing who signed, when, and from where” claim was not about this page.
Do ESIGN and eIDAS apply to this page?
This guide does not say they do. Those statutes and regulations describe classes of electronic signatures in general; Docify does not implement them, does not collect consent evidence, and does not verify a signer. The old “180+ countries” and “legally binding” copy was not about this tool.
What file does Sign and download save?
pdf-lib writes signed-document.pdf (application/pdf). There is no date stamp you can place, no certificate picker, and no password option. Errors use alert("Error signing PDF: " + error.message).

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