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Sign PDF Cluster

Add Signature to PDF — Draw, Type & Upload

Print-sign-scan is the long way. Load the PDF, make a mark, drop it on the line, flatten. The file stays in the tab. If you already have a transparent PNG of your wet ink, upload that instead of drawing with a mouse.

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Written by Safaat Rahman Siham, Founder & Developer at Convertify4u. Contact us.

Putting a mark on the page, not mailing paper

This spoke is the how-to for placement: grid positioning, reuse of a PNG, multi-page forms that need initials in more than one spot. It is the same Instant engine as the hub — local bytes, flatten at export.

Placement

Zoom the canvas, align to the signature block, leave room for a date if the form wants one. Flattening locks the mark to those coordinates in the saved file.

Reuse

Create the PNG once on a white background with transparency, then place it on every form that needs the same look. Typed script is the fallback when you cannot draw cleanly.

Not a certificate

Adding an image is not the same as a PAdES/PKI digital signature. If a court or agency requires a certificate, this is the wrong product.

How it works

  1. 1

    Select the PDF locally

    pdf-lib parses pages in a Web Worker. Nothing is transmitted.

  2. 2

    Make the signature

    Draw, type, or choose a transparent PNG. Place it on the correct line.

  3. 3

    Flatten and save

    Standard jobs free. Multi-signer routing is Premium.

Use cases

Internal approvals

A drawn mark on a routing sheet without a stylus app.

Consistent PNG across forms

Same scanned signature on every PDF that asks for it.

Shared office PC

Typed cursive when you should not leave a PNG of your signature on the machine — still flatten, still local.

Multi-page packets

Initials or full signature on more than one page without a printer.

Problems we solve

Print, wet ink, scan

Hours for a one-page permission slip. In-browser placement is minutes.

Cloud signers keeping a copy

Local insert keeps the contract on your disk.

Floating annotations

Flatten so Preview and Acrobat do not treat the mark as a movable stamp.

Trust & privacy

Three modes

Draw, type, PNG — pick what the hardware allows.

On-device only

Zero server contact for Instant Sign.

Free standard placement

Everyday singles. Premium for team routing.

Frequently asked questions

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