Is the worn/distressed look randomized every time?

It's pseudo-random but seeded, so the same input image and the same seed value always produce exactly the same distress pattern. Change the seed to get a different pattern.

Why do edges erode more than the interior?

Real rubber stamps wear unevenly, losing ink fastest along their edges, so the distress effect erodes edge pixels far more readily than interior pixels to mimic that ragged, worn look.

Can I control how worn the stamp looks?

Yes, the distress amount (0-100) controls how aggressively pixels get eroded, and the ink opacity (0-100) controls an overall fade, mimicking a stamp pad running low on ink.

What's the default ink color?

A classic rubber-stamp red, but you can set it to any RGB color, for example black or blue for a different stamp style.

Signature to Stamp Converter - Turn a Signature into a Rubber Stamp Look

Overview

Introduction

This tool turns a signature into a rubber-stamp-style impression entirely in your browser, complete with a worn, distressed edge effect.

It's a decorative effect, not a literal signature — useful for a stylized, stamped-document look.

What Is Signature to Stamp Converter?

A client-side stamp-effect generator: it first collapses the signature to a single flat ink color, then applies edge-weighted random erosion and an overall opacity fade.

The randomness is seeded (using a mulberry32 pseudo-random generator), so results are reproducible for a given seed rather than different every time.

How Signature to Stamp Converter Works

The signature's ink is first recolored to a single flat fill color while preserving each pixel's original alpha (so anti-aliased edges stay smooth), the same silhouette operation the general silhouette converter uses.

Then, each opaque pixel has a chance of being erased entirely, weighted much higher for pixels sitting on the shape's edge than for interior pixels, before every remaining pixel's alpha is scaled down by the chosen ink-opacity percentage.

When To Use Signature to Stamp Converter

Use it to give a signature a stylized 'rubber stamp' or 'official seal' look for a document design, poster, or template.

It's a decorative effect rather than a literal replacement for a real signature — don't use it where an authentic, unaltered signature is required.

Often used alongside Signature Color Changer and Black and White Signature Creator.

Features

Advantages

Produces a distinctive, reproducible worn-stamp look with a seed for consistency.
Full control over ink color, distress amount, and ink opacity.
Reuses proven silhouette-fill and seeded-random math instead of new, untested logic.

Limitations

This is a stylistic effect, not a way to create an official rubber stamp or legally meaningful seal.
At very high distress amounts, the signature can become difficult to read.

Examples

Classic red stamp

Input

A black-ink signature, default red ink color, moderate distress

Output

A worn-looking red stamp impression of the signature

The default options apply a moderate, edge-weighted worn look in classic rubber-stamp red.

Crisp, undistressed recolor

Input

Distress amount set to 0, ink opacity set to 100

Output

A clean, fully solid recolor with no erosion at all

Setting distress to 0 disables the random erosion entirely, leaving a flat, uniform ink fill.

Best Practices & Notes

Best Practices

Use a fixed seed value if you need the exact same worn pattern reproduced later.
Start with a moderate distress amount (around 30-40) for a believable worn look without sacrificing legibility.

Developer Notes

This tool is a thin wrapper around the existing convertLogoToStamp function from elsewhere in this category; the stamp effect (silhouette fill plus seeded edge-weighted distress plus opacity fade) is identical pixel math regardless of whether the source shape is a logo or a signature.

Signature to Stamp Converter Use Cases

Adding a stylized 'stamped' look to a signature for a template or design mockup
Creating a worn, vintage-style signature graphic
Producing a consistent, reproducible stamp effect across multiple assets using a shared seed

Common Mistakes

Using this as a substitute for an actual rubber stamp or notarized seal in a legal context.
Setting distress too high and making the signature illegible.

Tips

Try a few different seed values to find a worn pattern you like, then reuse that seed for consistency.
Pair a lower ink-opacity setting with a moderate distress amount for a subtler, more realistic worn effect.

Signature to Stamp Converter