Convert a Signature to Blue Ink
Recolour any signature to standard blue ink while keeping every stroke and pressure variation exactly as you wrote it.
Describe the edit — the AI assistant does it on the canvas.
2 free credits · No signup · ~10 seconds
Drop a signature
PNG, JPG, WebP or SVG — up to 30 MB
Runs entirely in your browser. Your image is never uploaded.
Why blue ink is the convention
Recolouring, not repainting
Every pixel keeps its original brightness and takes the blue you choose. The thin, faint parts of a stroke stay thin and faint, so the signature still looks handwritten rather than traced.
Why institutions ask for blue
Blue ink on a black-and-white photocopy is instantly distinguishable from the printed form underneath, which is how a bank or notary tells an original signature from a duplicate at a glance. It is a practical convention, not a legal requirement, but plenty of organisations still ask for it.
Transparency is preserved
If you have already made the signature transparent, it stays transparent. Only the visible ink is recoloured, so the file drops onto any document unchanged in shape.
Picking the right blue
The default is a standard ballpoint blue. Darker, more saturated blues read as fountain pen; lighter ones can wash out on a photocopy. If a specific shade is required, paste the exact hex into the picker.
Order of operations
Remove the background first, then recolour. Doing it the other way round works, but the paper takes the ink colour too and you end up trying to knock out a blue background instead of a white one.
How to convert a signature to blue ink
Upload your signature
Drop in a signature image. A transparent PNG gives the best result, but a plain scan works too.
Choose the blue
The default is a standard ballpoint blue. Adjust the picker if your organisation asks for a specific shade.
Download
Take a free preview, or download the full-resolution file with one credit.
Where blue ink is expected
Bank and legal forms
Meet the blue-ink requirement many institutions still specify for signed originals.
Contracts
Make the signature visibly distinct from the printed text of the agreement.
Documents that get photocopied
Blue survives copying as clearly different from the black of the form itself.
Official correspondence
Match the house convention where letters are expected to be signed in blue.
Used by designers, indie devs & students at
What people use it for
The jobs the editor was built around — and what it does differently on each one.
Colourways you can revisit
Every edit is a layer, not a bake. When the brand shifts, reopen the file and change the colour rather than rebuilding the variant from the original.
Cutouts with awkward edges
AI background removal that keeps hair, foliage and soft shadows instead of stamping a hard outline around them. The output is a transparent PNG, ready to place.
No export, edit, re-import loop
The Framer plugin runs on the canvas you are already working in, so a recolour or a cutout does not mean a round trip through a second application.
Ten options in the time one used to take
Recolour once and step through the alternatives, so a client review can look at the whole range instead of the one version there was time to make.
Brand colours matched exactly
Pick a colour straight off an existing asset and get the hex, rather than eyeballing it against a screenshot and hoping it is close enough.
Free to preview, priced per export
Previewing is unlimited and costs nothing. A credit is spent only when you download a full-resolution file, so exploring an idea is never the expensive part.
Frequently Asked Questions
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Turn your signature blue
Upload, pick the blue, and download the recoloured signature.