Browser edition: files stay on your device. Up to 100 MB total and 10 minutes. First use downloads a 32 MB engine. Some formats depend on codec support. Public-link downloading is not ready on this free deployment.
Convert GIF to WebM
Convert GIF to WebM online for free. Smart remux when possible, high-quality encoding when not.
How to convert GIF to WebM
- Add your fileDrop it on the page, choose it from your device, or paste it with Ctrl+V.
- ConvertAdjust settings if you like, then press the button. You'll see live progress.
- Browser processing uses original files on your device. Public-link downloading is unavailable.
What happens to your file
GIF files are common for reactions, memes, short loops in chats, emails and docs, but not every app or device opens them. WebM is the better choice for website video, HTML5 players, transparent overlays. Spool converts GIF to WebM with FFmpeg — real decoding and encoding, not a renamed file extension.
A real re-encode. GIF usually contains 256-color palette animation, no audio, which WebM players can't decode, so Spool re-encodes to VP9 video and Opus audio. "Balanced" is visually indistinguishable from the source for most videos; "High" uses a lower CRF for archiving; "Smaller file" trades a little sharpness for a much smaller file.
GIF vs WebM
| GIF | WebM | |
|---|---|---|
| Full name | Graphics Interchange Format | WebM |
| Created by | CompuServe, 1987 | Google, 2010 |
| Type | Animated image | Video container |
| Typical contents | 256-color palette animation, no audio | VP8, VP9 or AV1 video with Opus or Vorbis audio |
| Best for | reactions, memes, short loops in chats, emails and docs | website video, HTML5 players, transparent overlays |
| Strength | Autoplays and loops in every app, email client and browser | Royalty-free and built for the web |
| Weakness | Huge files compared with MP4 for the same clip | Weak support in older Apple software and many video editors |
About GIF
- Type
- Graphics Interchange Format
- Contains
- 256-color palette animation, no audio
- Use
- reactions, memes, short loops in chats, emails and docs
About WebM
- Type
- WebM
- Contains
- VP8, VP9 or AV1 video with Opus or Vorbis audio
- Use
- website video, HTML5 players, transparent overlays
FAQ
Will converting GIF to WebM reduce quality?
A small amount, because the video has to be re-encoded. With the default "Balanced" setting (H.264 CRF 23) the difference is not visible for most videos; choose "High" to minimize it.
How long does it take?
Re-encoding runs at roughly real-time or faster for 1080p video. You'll see live progress and the time remaining.
Can I convert several GIF files at once?
Yes. Drop up to 10 files at a time — each one is converted in parallel and you can download them individually or all at once.
Is there a file size limit?
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Is this GIF to WebM converter free and safe?
Yes. There are no pop-ups, redirects or fake download buttons, and no software to install. Files are transferred over HTTPS, processed in isolated job folders and deleted automatically.