Slack emoji maker
Turn an image or short text into a 128x128 Slack emoji PNG, in your browser.
How to make a Slack emoji
- Upload an image, or switch to the text tab and type up to a few characters.
- The tool crops and resizes it to 128x128 pixels, the size Slack expects.
- Check the small preview. That is roughly how it will look in a message.
- Download the PNG, then in Slack open your workspace name, then Customize workspace, then Add custom emoji, and upload the file.
Frequently asked questions
Is this Slack emoji maker free?
Yes. It runs entirely in your browser and there is no account, watermark, or limit. Your image never leaves your computer.
What size does a Slack emoji need to be?
Slack resizes emoji to 128x128 pixels and rejects files over 128 KB. This tool outputs exactly that: a square 128x128 PNG, and it shows the file size before you download.
Can I make a Slack emoji from text?
Yes. Use the text tab, type one or two short lines, pick a font and colors, and download the PNG. Short text reads best because emoji render at 32 pixels or smaller in messages.
Can I make an animated GIF emoji for Slack?
Slack accepts animated GIF emoji up to 128 KB. If your GIF is already under 128 KB this tool passes it through unchanged so the animation survives. Resizing an animated GIF in the browser would drop frames, so oversized GIFs need a video tool first, or you can convert the first frame to a static PNG here.
Does this work online without installing anything?
Yes. It is a web page. The cropping and PNG encoding use the canvas API in your browser, so it also keeps working after the page has loaded.
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