AI Reaction Emoji Generator
Reaction emoji maker
A reaction emoji is one feeling at 22 pixels: the face or gesture someone reaches for instead of typing 'nice', 'oof', 'seen' or 'no'. It works when the expression is exaggerated and the shape is simple, and it fails when it tries to be a scene. The best custom reactions are the ones a specific group needs and the standard set does not have.
Emojis you create are public and may appear in Explore.
Ready-made reaction emojis
Free reaction emojis you can download right now - or generate your own above.
How to make a reaction emoji
1. Describe your reaction
Type what you want - for example “Blob with a slow, knowing nod”. Add colors, mood, or style for a personal touch.
2. Generate with AI
Our AI renders a glossy, transparent reaction emoji in about a minute. Tweak the prompt and regenerate any time.
3. Download & use
Save the PNG and add it to Slack, Discord, WhatsApp, or any app as a custom reaction emoji or sticker.
Tips for a great reaction emoji
- • Lead with the subject: start your prompt with “reaction”.
- • Add one clear emotion or action - happy, angry, dancing, waving.
- • Name a style: 3D, pixel art, sticker, flat, or claymation.
- • Mention an accessory or color to make your reaction emoji unique.
- • Keep it to one subject so the emoji stays crisp at small sizes.
Where to use a reaction emoji
Every reaction emoji downloads as a transparent PNG, so it drops cleanly into a Slack or Discord custom-emoji slot, a WhatsApp or iMessage sticker, a Notion or Figma board, a Twitch or YouTube channel, or anywhere you’d use a reaction. Generate a set of reaction emojis to give your team chat or community its own personality.
Reaction emoji FAQ
What makes a good reaction emoji?
One emotion, oversized. Big eyes, a clear mouth, no background and at most three colours. Test it at the size of a reaction, about 22 pixels; if you can still name the feeling, it works.
Which reactions are worth making custom?
The ones your group uses that the standard set lacks: 'I saw this and have no notes', 'this is fine', 'ship it', 'not now'. If people are typing a phrase repeatedly, that phrase is a reaction waiting to be drawn.
What format are the reaction emojis?
Generated reaction emojis are high-resolution PNG files with transparent backgrounds, sized perfectly for chat apps, custom Slack/Discord emoji slots, stickers, and reactions.
Can I customize the reaction emoji style?
Yes. Add details to your prompt - colors, accessories, mood, or art style - and the generator will tailor the reaction emoji to match. Try the example prompts above to get started.
Where can I use a reaction emoji?
Anywhere that accepts an image: Slack and Discord custom-emoji slots, WhatsApp and Telegram stickers, Twitch emotes, Microsoft Teams reactions, Notion, and more. The transparent PNG drops in cleanly on light or dark backgrounds.