Convert AVI to WebM
Free and instant — your AVI files are processed securely on our servers and deleted right after conversion. Nothing is stored.
How to convert AVI to WebM
- Step 01
Add your AVI files
Drop them into the box above or click to browse. You can add several files at once.
- Step 02
Conversion starts instantly
Your file is sent to our servers, converted and deleted right away — no sign-up, no queue, no waiting.
- Step 03
Download your WebM files
Save each file individually or grab them all at once. Done.
Why convert AVI to WebM?
AVI won't play in any browser and its minimal compression makes files huge. Converting to WebM gives you a small, royalty-free file built for the web, ready to embed in a page or upload anywhere that rejects AVI.
AVI vs WebM at a glance
AVI is Microsoft's original video container from 1992 — still common in older recordings, but large and not supported by browsers or modern streaming. WebM is the open web video format — smaller than MP4 at the same quality, royalty-free and supported by every modern browser.
| Property | AVI | WebM |
|---|---|---|
| Extension | .avi | .webm |
| Full name | Audio Video Interleave | WebM Video |
| First released | 1992 | 2010 |
| Developed by | Microsoft | |
| Compression | Lossy | Lossy |
| Transparency | No | No |
| Animation | No | No |
| Best for | legacy video from older cameras and software | web video — open format supported natively by all browsers |
AVI to WebM — frequently asked questions
Is this AVI to WebM converter really free?
Yes — completely free, with no sign-up, no watermarks and no daily limits.
Will I lose quality converting to WebM?
WebM uses lossy compression, so the image is re-encoded at high quality (92%). For photos the difference is practically invisible; for text-heavy graphics or logos, a lossless format like PNG preserves sharp edges better.
Is the conversion private?
Video conversion runs on our servers with ffmpeg — your file is deleted immediately and never stored.