Convert AVI to WEBM
AVI is great for older Windows software, DVD players and legacy cameras, but WEBM is the better choice for web video, HTML5 players and screen recordings. Convert AVI to WEBM in seconds, right in your browser.
- No upload — 100% private
- Fast, lossless when possible
- Free & unlimited
- Works on iPhone & Android
Keep this tab open — the conversion runs on your device, nothing is uploaded.
Add more files above to keep converting.
How to convert AVI to WEBM
- 1
Tap Choose files and select one or more AVI files (or drag them in).
- 2
Check that WEBM is selected. Use Advanced options for resolution, size or trimming.
- 3
Press Convert. Everything happens on your device — no upload, no waiting in a queue.
- 4
Your WEBM downloads automatically. Converting several files? Grab them all as a ZIP.
AVI vs WEBM
Both formats are lossy, so the video is re-encoded once. Pick High quality to keep it as close to the original as possible, or Small for the smallest file.
| AVI | WEBM | |
|---|---|---|
| Full name | Audio Video Interleave | WebM Video |
| Type | Video | Video |
| Compression | Lossy | Lossy |
| Developed by | Microsoft | |
| Introduced | 1992 | 2010 |
| Plays on iPhone | ✕ No | ◐ Partly / with an app |
| Plays on Android | ◐ Partly / with an app | ✓ Yes |
| Plays on Windows | ✓ Yes | ✓ Yes |
| Plays on Mac | ◐ Partly / with an app | ◐ Partly / with an app |
About AVI and WEBM
AVI: AVI is Microsoft's classic video format from the Windows 95 era. It is still used by older cameras, DVD players and Windows software.
WEBM: WebM is Google's open video format using VP8/VP9 and Opus. It is built for the web and is what screen recorders and browsers produce.
Frequently asked questions
How do I convert AVI to WEBM on my phone?
Will converting AVI to WEBM reduce quality?
Is this AVI to WEBM converter free?
Are my files uploaded to a server?
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