Convert Lottie to GIF for Slack
Turn a Lottie animation into a GIF that plays inline in Slack — for launches, celebrations, and custom emoji.
How it works
- 1Upload a Lottie file (.json, .lottie, or .tgs), or try the example
- 2Adjust frame rate, quality, resolution and transparency
- 3Export to any format — or optimize and repackage as dotLottie
Nothing is uploaded. SVG output uses SMIL and needs no JavaScript; APNG and WebM keep the full color and transparency GIF can't.
About using Lottie GIFs in Slack
Slack plays animated GIFs inline and supports animated custom emoji — but it doesn't know what a Lottie is. Convert here and post the GIF like any file, or upload a small square export as a workspace emoji.
For emoji, Slack wants small files (128×128 display, 128KB limit for emoji): use 1× resolution on a small/square animation, drop the FPS to ~12, and keep it short. Transparent GIFs look best on both light and dark Slack themes.
Which format should I use?
| Format | Type | Transparency | Color | Best for |
|---|---|---|---|---|
| GIF | Animated image | 1-bit (hard edges) | 256 colors | Email, chat, universal support |
| APNG | Animated image | 8-bit (smooth) | Full 24-bit | Icons, logos, quality over size |
| WebM | Video | Yes (VP9 alpha) | Full | Small web video, transparent overlays |
| MP4 | Video | None | Full | Social, ads, video editors |
| SVG | Vector (SMIL) | Yes | Full | Runtime-free embeds |
| PNG / WebP | Still image | Yes | Full | Posters, thumbnails, placeholders |
Frequently asked questions
How do I make a Slack custom emoji from a Lottie?+
Export a short, square, transparent GIF at 1× with ~12fps, keep it under 128KB, then add it via your workspace's emoji settings.
Why transparent?+
Slack renders on light or dark themes — a transparent background looks native on both.
Does Slack re-compress my GIF?+
Inline posts keep your file; emoji must meet the 128KB cap, so small and short wins.
