About WebM to MP3
Save the audio from a browser or screen recording (WebM) as an MP3 for notes, transcription, or a podcast edit.
Opus or Vorbis audio from the WebM is decoded and re-encoded as MP3.
The FFmpeg engine (about 31 MB) downloads the first time you convert and is then cached by your browser. Files up to about 100 MB are supported because everything runs in browser memory.
WebM vs MP3
| WebM | MP3 | |
|---|---|---|
| What it is | Web-focused Matroska variant | Lossy audio |
| Typical codecs | VP8 or VP9 video (sometimes AV1), Vorbis or Opus audio | MPEG-1 Layer III |
| Common use | Browser recordings, web video | Universal music and podcast format |
How to do it
- 1
Drop a WebM file into the converter above (already set to MP3).
- 2
Pick a bitrate if you want something other than 192 kbps.
- 3
Tap Convert, keep the tab open until it finishes, then download the MP3.