Do I need to upload an existing stamp image?

Yes, this tool adds text onto an image you upload; use one of the stamp generator tools in this category if you want to create a stamp graphic from scratch instead.

What characters can I add?

The built-in bitmap font supports uppercase A-Z, digits 0-9, and spaces; lowercase input is automatically uppercased and unsupported punctuation is skipped.

Can I position the text anywhere on the stamp?

Yes, you set the x/y pixel coordinates directly, so text can go inside the ring, along the bottom edge, or anywhere else on the uploaded image.

Does this tool add its own border or ring?

No, it only draws text onto whatever image you upload; use the stamp generator tools if you also need a ring border added.

Stamp Text Adder - Add Text onto a Stamp Image

Overview

Introduction

This tool stamps a line of text directly onto an existing image you upload, at whatever position, scale, and color you choose.

It reuses the exact same bitmap-font text renderer this category's stamp generators and the PNG Text Adder tool already share, rather than building a second one.

What Is Stamp Text Adder?

A thin, stamp-framed re-export of `addTextToPng`, the shared bitmap-font renderer used across this category for any tool that draws text onto pixels.

Because it operates on an uploaded image rather than generating one, it's the right tool for adding wording onto an already-designed stamp graphic or scanned template.

How Stamp Text Adder Works

Your uploaded image is decoded into a pixel buffer, and the text is rasterized glyph-by-glyph using a hand-authored 5x7 bitmap font at the x/y position and scale you set.

Each supported character is drawn as a block of colored pixels; unsupported characters are skipped but still advance the text cursor so spacing stays consistent.

When To Use Stamp Text Adder

Use it to add a name, date, or short label onto a stamp template you already have as an image file.

It's also useful for annotating any PNG with short, blocky text without opening an image editor.

Often used alongside Custom Stamp Design Creator, Text to Stamp Converter and PNG to Stamp Converter.

Features

Advantages

Works on any uploaded PNG, not just stamps generated by this category's other tools.
Full control over text position, scale, and color.
Runs entirely client-side; your image never leaves your browser.

Limitations

Only uppercase A-Z, digits, and spaces are supported by the built-in font — no lowercase glyphs or punctuation.
Text placed outside the image bounds is silently clipped rather than causing an error, so double-check the position for large text at small images.

Examples

Label an uploaded stamp template

Input

text="DRAFT", x=20, y=20, scale=2, color=red

Output

The uploaded image with DRAFT stamped in red starting at (20, 20)

Position and scale are both fully configurable pixel values.

Add a short code to a scanned form

Input

text="REF 42", x=5, y=5, scale=1

Output

The uploaded image with REF 42 stamped in small black text near the top-left corner

A scale of 1 renders the smallest available text size.

Best Practices & Notes

Best Practices

Preview the result before downloading, since text placed too close to the image edge can get clipped.
Increase the scale for text you want to remain legible after the image is later resized.

Developer Notes

The lib function is a one-line re-export of addTextToPng from png-text-adder.ts, following the same 'thin wrapper' pattern as png-outline-adder.ts's re-export of addStrokeToPng, since stamping text onto an uploaded image is exactly what that shared function already does.

Stamp Text Adder Use Cases

Adding a name or date to a stamp template image
Labeling a scanned document with a short code
Annotating any PNG with blocky, high-contrast text

Common Mistakes

Expecting lowercase or punctuation to render as typed — only uppercase letters, digits, and spaces are supported.
Placing text near the image's right or bottom edge without checking the preview, risking clipped characters.

Tips

Use a light background color if stamping dark text, or vice versa, for the clearest contrast.
Combine with the PNG Cropper tool afterward if you need to trim the image to just the labeled area.

Stamp Text Adder