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Custom Slack emoji generator

Free Slack Emoji Maker

A Slack emoji maker turns text, emoji characters, or uploaded images into square PNG assets for custom workspace emoji. Build a 128x128 preview, tune the spacing, and download the result in your browser.

Build the emoji

Start from text or upload an image, then adjust the final 128px asset.

Fine tune the export

Upload checklist

  • Use the downloaded PNG as the custom emoji image.
  • Keep the name short enough to remember in chat.
  • Preview the emoji in a real Slack message before announcing it.

How to make a custom Slack emoji

The goal is a simple, readable square asset. Avoid thin text, busy photos, and long labels because Slack renders emoji very small inside messages.

1

Choose text mode for a letter or emoji, or image mode for an uploaded picture.

2

Adjust the padding, scale, shape, and background until the preview is readable.

3

Use the generated shortcode as a clean Slack emoji name.

4

Download the 128x128 PNG and upload it in Slack custom emoji settings.

Frequently asked questions

What is a Slack emoji maker?

A Slack emoji maker creates square PNG images that work well as custom workspace emoji. This tool lets you start from typed text, an emoji character, or an uploaded image, then export a 128x128 PNG.

What size should a custom Slack emoji be?

A 128x128 square PNG is a practical default for custom Slack emoji because it stays crisp in the picker and small enough for chat. Use transparent backgrounds when the emoji shape should blend into Slack themes.

Can I make a Slack emoji from a photo?

Yes. Upload a photo, logo, or icon, choose the padding and shape, then download the generated PNG. High-contrast images with simple silhouettes usually read best at emoji size.

Does this tool upload anything to Slack?

No. The editor runs in your browser and only downloads a PNG file. After downloading, upload the image through your Slack workspace custom emoji settings.

How should I name a Slack custom emoji?

Use a short lowercase name with words separated by underscores, such as :launch_day: or :support_win:. Clear names make the emoji easier for teammates to find.