Make Custom Animated GIFs for Slack
Create custom emoji reactions and animated GIFs for your Slack workspace. Upload a photo, animate your logo, or generate from a text prompt — ready to upload in seconds.
Step 1
Upload or describe
Photo, logo, or type a text prompt
Step 2
Animate it
Pick a style — portrait, logo, reaction
Step 3
Add to Slack
Customize → Emoji → Add Custom Emoji
Slack Emoji & Reactions Optimized: Slack emoji GIF: square 1:1, <30s loop, <5MB, auto-repeats in chat.
あなたのような人が作りました
コミュニティによる本物の画像→GIFアニメーション。カードにマウスを重ねる（またはタップする）と、元の写真が動き出します。
Compress and resize your GIF for Slack.
Slack emoji rewards tiny files. Keep the same GIF and tune it for the workspace limit before upload.
Slack GIF Requirements
| Type | Dimensions | Limit |
|---|---|---|
| Custom Emoji | 128×128 px rec. | ≤ 128 KB |
| Message Attachment | Any size | ≤ 1 GB |
| Workspace total | N/A | 5,000 emoji |
Emoji over 128 KB? Use GIF Compressor →
Best Animation Styles for Slack
Logo & brand emoji
Logo Pulse · Logo Glow
Clean and readable at 128×128
Portraits & headshots
Portrait Subtle · Eye Blink
Face stays recognisable at small size
Reaction & celebration
Head Bob · Reaction Burst · Face Glow
Expressive without being too busy
Ways Teams Use Custom Slack GIFs
Celebration Reactions
Animate a team photo or logo into a custom :celebration: emoji everyone can use when a deal closes.
Reaction Emojis
Turn a coworker's expression into a custom reaction emoji — the best way to react to Monday morning updates.
Kudos & Recognition
Create a custom :winner: or :mvp: animated emoji to give public props in #general or #kudos channels.
Announcement Banners
Generate an animated product launch or milestone GIF to share in announcement channels for maximum attention.
Status & Vibes
Seasonal or themed GIFs to share your current mood or work status — Friday energy, deep focus mode, coffee needed.
Onboarding & Culture
Welcome new hires with a custom animated team GIF. Makes a better first impression than a plain text message.
Why Choose Moxion for Slack GIFs?
vs GIPHY for Slack, Canva, and Ezgif
| Feature | Moxion✦ | GIPHY Slack | Canva | Ezgif |
|---|---|---|---|---|
| AI animation from your own photo | ✓ | – | – | – |
| Emoji sizing guide (128×128 / 128 KB) | ✓ | – | – | ✓ |
| Portrait & team photo animation | ✓ | – | – | – |
| Text-to-GIF from text prompt | ✓ | – | – | – |
| Searchable GIF library | – | ✓ | – | – |
| Free to start | ✓ | ✓ | ✓ | ✓ |
Ready to Upload? Here's How
Download your GIF. If it's over 128 KB, compress it first using the GIF Compressor.
In Slack, click your workspace name (top-left) → Settings & Administration → Customize [Workspace Name].
Go to the Emoji tab → Add Custom Emoji → Upload File.
Name your emoji (e.g., :celebration:) → Save Changes. It's now available to everyone in your workspace.
Frequently Asked Questions
What size should a GIF be for Slack custom emojis?›
Slack requires custom emoji to be under 128 KB and recommends 128×128 pixels. After generating your GIF, you can use the GIF Compressor tool to reduce file size if needed before uploading to Slack.
How do I add a custom animated GIF emoji to Slack?›
In Slack, go to your workspace name → Settings & Administration → Customize [Workspace Name] → Emoji tab → Add Custom Emoji. Upload your GIF file, give it a name (e.g., :celebration:), and it will appear in your workspace emoji picker.
Can I make a GIF of a coworker or team photo for Slack?›
Yes. Upload any portrait or team photo using the Image-to-GIF tool, select the Portrait animation style, and download the GIF. It works perfectly as a custom Slack emoji or reaction.
What animation styles work best for Slack emojis?›
Subtle animations work best in small emoji sizes — Portrait (gentle expression), Logo (soft pulse or glow), and Reaction styles all look great at 128×128. Avoid overly complex animations that lose detail when scaled down.
Is it free to make GIFs for Slack?›
Yes. The free tier gives you 1 animated GIF per day. Sign up free for 150 bonus credits plus 3 extra free generations to start. For unlimited generations and higher resolution, use Standard or Pro credits.
Can I use a text prompt instead of uploading an image?›
Yes. Switch to the Text-to-GIF tab and describe what you want — "celebration confetti explosion", "thumbs up with sparkles", "rocket launching upward". The AI generates a looping GIF from your description.
How many custom emojis can a Slack workspace have?›
Slack allows up to 5,000 custom emojis per workspace (including animated GIFs). There is no separate limit for animated vs static emojis — all custom emoji count toward the same total.
Can I use this GIF in Slack messages directly (not just as emoji)?›
Yes — you can share any GIF file as a message attachment in Slack. Slack will preview it inline and autoplay it in the chat. The emoji upload workflow creates a named :reaction: shortcode the whole workspace can use.