Online Signature Color Changer – Convert Ink to Any Color

This free online Signature Color Changer lets you easily convert your handwritten signature from blue ink to black or any color. Everything is processed securely in your browser — adjust tolerance, clean paper background, preview results, and download your new digital signature in PNG or JPEG.

100% private: runs entirely in your browser — no uploads, no tracking.

Original

Processed

Color settings
Higher catches more nearby hues.
Background & output
Pixels lighter than this are treated as paper.

Frequently Asked Questions

Yes. Pick the source ink (or use the eyedropper) and choose any target color. The tool preserves natural stroke shading.

Click 'Pick from image' (supported in most modern browsers). If not available, approximate with the color picker and increase tolerance slightly.

It widens the hue/saturation range around your chosen color. Higher values catch more similar tones; too high may recolor nearby paper shadows.

Enable 'Make white background transparent', then raise/lower the white threshold until the paper disappears while strokes remain.

PNG, JPG/JPEG, and WebP are accepted. For crisp edges or transparency, export PNG. Use JPEG for a smaller file.

Yes. Everything runs locally in your browser — no uploads, no tracking.