Slack Emoji Maker — Create Custom Emoji for Your Workspace with AI
Give your Slack workspace a personality. AI-generated custom emoji, transparent PNG, animated GIF support. Generate team-specific reactions in seconds — no design skills, no Photoshop, no fee.
Slack Custom Emoji Size & Format Requirements
| Type | Size | Format | Max Size | Note |
|---|---|---|---|---|
| Custom Emoji | 128×128 px (recommended) | PNG / JPG / GIF | 1 MB | Square aspect ratio required; transparent PNG looks best |
| Animated Emoji | 128×128 px | GIF | 1 MB | Slack plays GIF animations natively in emoji picker |
| Workflow / App Icon | 512×512 px (recommended) | PNG | 1 MB | Used for Slack app and workflow avatars |
Forgemoji outputs 256×256 transparent PNG — Slack automatically scales to 128×128. Upload directly.
AI Emoji Maker vs. Traditional Slack Emoji Methods
| Feature | Traditional Methods | Forgemoji AI ✨ |
|---|---|---|
| Creation method | Download from emoji sites or use Figma/Photoshop | ✓ AI generates any idea you describe |
| Transparent background | Manual removal required in most cases | ✓ Auto transparent PNG every time |
| Unique to your team | ✗ Same emoji used by thousands of workspaces | ✓ One-of-a-kind AI-generated character |
| Animated GIF emoji | Need separate GIF tools or subscriptions | ✓ Built-in GIF animation (6 effects) |
| Team culture & branding | Hard to match company tone with generic sets | ✓ Generate exactly the vibe you need |
| Cost | Premium emoji packs $5–30; designers $50–200+ | ✓ Free — 5 generations/day |
How to Make a Custom Slack Emoji
- 1
Generate your emoji
Pick two emoji to fuse — or upload a photo — and hit Generate. AI creates a transparent-background character in seconds.
- 2
Download as PNG or GIF
Save the 256×256 transparent PNG for static emoji. Use the Animate button to export a GIF with one of 6 looping effects.
- 3
Upload to your Slack workspace
Go to your Slack workspace → Settings & Administration → Customize → Emoji → Add Custom Emoji. Upload the file, give it a name like :my-emoji:, and it's live.
Popular Slack Emoji Ideas for Work Teams
Frequently Asked Questions
- What size should Slack custom emoji be?
- Slack recommends 128×128 pixels in PNG, JPG, or GIF format, under 1 MB. The image must be square. Transparent PNG looks best — the emoji shows cleanly on any background color. Forgemoji generates 256×256 transparent PNG which Slack automatically scales down perfectly.
- How do I add a custom emoji to Slack?
- Go to your workspace URL (e.g. yourteam.slack.com) → click your workspace name → Settings & Administration → Customize Slack → Emoji tab → Add Custom Emoji. Upload your image, type the emoji name (e.g. "launch-mode"), and click Save. It appears immediately in the emoji picker for all workspace members.
- Do I need to be a Slack admin to add custom emoji?
- By default, any workspace member can add custom emoji. However, workspace admins can restrict this to Workspace Owners and Admins only. If you can't find the "Add Custom Emoji" option, ask your admin to check the emoji permissions settings.
- Can I make animated Slack emoji with Forgemoji?
- Yes. After generating your base emoji, click the Animate button and export as GIF with any of 6 effects: Bounce, Float, Wiggle, Pulse, Rubber, or Spin. Slack fully supports animated GIF custom emoji — they loop in the emoji picker and in messages.
- How many custom emoji can a Slack workspace have?
- Free Slack workspaces can have up to 5 custom emoji. Paid plans (Pro, Business+, Enterprise) allow unlimited custom emoji. If you're on a free plan, choose your custom emoji wisely — save them for your most-used reactions.
- Is Forgemoji free to use for Slack emoji?
- Yes. Forgemoji is completely free — 5 AI generations per day, no account or payment required. Generate unique transparent PNG emoji for your entire team.