Is the canvas always a perfect square?

Yes, round stamps always render on a square canvas (width equals height) so the double-ring border forms a true circle rather than an ellipse.

Can I add a second line, like an organization name under a main word?

Yes, the optional subtext field adds a smaller centered line beneath the main text, just like a real notary or organization seal often shows a name above and a role or location below.

What's the difference between this and the Custom Stamp Design Creator?

This tool is the same composer with the shape locked to round, so you don't need to toggle a shape control if you already know you want a circular stamp.

Can I change the ink color?

Yes, any RGBA ink color is supported; it defaults to a classic stamp red.

Round Stamp Creator - Make a Circular Rubber Stamp PNG

Overview

Introduction

This tool builds a circular rubber-stamp graphic: a double ring border with your text centered inside it, on a perfectly square transparent canvas.

It's a shape-locked convenience wrapper around this category's shared stamp composer, for when you already know you want a round stamp.

What Is Round Stamp Creator?

A round-only wrapper around createCustomStampDesign, the shared stamp composer this whole batch of tools builds on.

It draws a concentric double-ring border inscribed in the square canvas and centers up to two lines of text inside it.

How Round Stamp Creator Works

Your text (and optional subtext) is validated and measured using the shared bitmap font's fixed glyph width, then centered inside the ring.

The ring itself is drawn using a distance-from-center calculation per pixel, producing a smooth circular band rather than a polygon approximation.

When To Use Round Stamp Creator

Use it whenever you specifically want the classic circular stamp look — a notary seal, an organization seal, a round approval mark.

It's a one-less-click alternative to the Custom Stamp Design Creator when the shape is already decided.

Often used alongside Custom Stamp Design Creator, Rectangular Stamp Creator and Monogram Stamp Creator.

Features

Advantages

Guarantees a true circular ring by always rendering on a square canvas.
Supports an optional second text line for a name/role or name/date pairing.
Runs entirely client-side, producing a downloadable transparent PNG.

Limitations

The shape can't be changed to rectangular from this tool — use the Rectangular Stamp Creator or Custom Stamp Design Creator for that.
The bitmap font only supports uppercase A-Z, digits, and spaces.

Examples

A round notary-style seal

Input

text="NOTARY", subtext="PUBLIC"

Output

A square PNG with a circular double ring around NOTARY and PUBLIC

The subtext line renders smaller and centered beneath the main text.

A simple round approval mark

Input

text="OK"

Output

A compact circular PNG stamp reading OK

Short text leaves generous margin inside the ring.

Best Practices & Notes

Best Practices

Keep the main line short for the most balanced circular composition.
Use the subtext line for a secondary detail rather than cramming everything onto one line.

Developer Notes

The lib function forwards directly to createCustomStampDesign with shape fixed to "round", adding no new rendering logic of its own.

Round Stamp Creator Use Cases

Creating a notary or organization seal mockup
Building a round approval/status stamp graphic
Prototyping a circular logo-style stamp

Common Mistakes

Trying to pass a rectangular shape to this tool — it's locked to round by design; use a different tool for rectangular output.
Overloading the main line with long text that doesn't leave room for the ring border.

Tips

Pair with the Green Stamp or Red Stamp creators for themed ink colors on a round shape.
A short single word usually reads more clearly on a round stamp than a long phrase.

Round Stamp Creator