Convert a JPG Signature to PNG
Move a photographed or scanned signature into a lossless PNG — the first step before you knock the paper out from behind it.
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Drop a scan, photo or 1-page PDF of a signature
PNG, JPG, WebP, SVG or a 1-page PDF — up to 20 MB
Runs entirely in your browser. Your image is never uploaded.
Why a signature has to leave JPEG
JPEG noise sits exactly where the ink is
Compression artefacts cluster around high-contrast edges, and a signature is nothing but high-contrast edges on a plain field. That grey halo around every stroke is what later makes background removal leave a dirty fringe.
Convert before you cut out the paper
Removing a white background from a JPEG means the tolerance has to be loose enough to swallow the artefacts, which eats into the thin ends of strokes. On a PNG the boundary is clean and the ink survives.
It cannot clean up what is there
Converting preserves the existing noise rather than removing it. If the source is a phone photo of a page, re-shooting it in even light will beat any amount of processing.
What PDF and e-sign tools expect
Signature fields in PDF software and e-signature platforms overwhelmingly want a transparent PNG, so the mark sits over the document rather than in a white box on top of it.
Nothing leaves your machine
A signature is sensitive. This conversion runs on a canvas in your own browser — the file is never uploaded, stored or transmitted.
Getting a clean signature file
Scan, do not photograph
A flatbed scan at 300 DPI on plain white paper gives a far cleaner starting point than any phone photo, and needs almost no cleanup.
Convert before cutting out
Removing the background from a JPEG forces a loose tolerance that eats the thin ends of strokes. Do it on the PNG instead.
Sign with a fine black pen
Ballpoint on white paper thresholds far more cleanly than gel or fountain ink, which spread and photograph unevenly.
How to convert a jpg signature to png
Upload the JPG signature
A scan or a photo of the signed page. Scanned to PDF instead? A single-page PDF works as well — page 1 is turned into an image in your browser.
Get the PNG
A lossless re-encode with nothing to configure.
Download, then remove the paper
Take the PNG and run it through the transparent signature maker next.
Where the PNG signature is needed
Preparing for a PDF
Produce the lossless source a transparent signature is built from.
Before background removal
Avoid the dirty fringe that JPEG artefacts leave around strokes.
Email signatures
Get a clean file to place beside your sign-off block.
Contract templates
Build a reusable signature asset for documents you send often.
Or just ask
Describe the edit in your own words
Type what you want changed and the assistant does it on the canvas — each step lands as a layer you can reopen, so nothing it does is baked in.
No edits yet.
Frequently Asked Questions
Related Tools
Guides worth reading
How to Fix Blurry or Fringed Edges on a Transparent PNG
Why your transparent PNG has a white halo, a grey fringe or soft edges — the four real causes, how to tell them apart in seconds, and the fix for each.
SVG vs PNG for Logos: Which File Do You Actually Need?
What SVG and PNG really are, where each one wins, why your developer keeps asking for the SVG, and the three files that cover almost every request.
What to DIY and What to Pay a Designer For
Where design money actually earns its return at pre-seed, where it doesn't, and the honest line between the work worth commissioning and the work worth doing yourself.
Convert your JPG signature to PNG
The lossless first step before you remove the paper.