OpenAnyFile
What is a .weba file?
WebM Audio is an audio format developed by Google, first released in 2010. It is usually created by Browser MediaRecorder API.
What Chrome produces when a web page records your microphone — usually Opus inside a WebM shell.
File details
| Full name | WebM Audio |
|---|---|
| Category | Audio |
| MIME type | audio/webm |
| Signature (magic bytes) | 1A 45 DF A3 |
| Developer | |
| Introduced | 2010 |
| Opens with | Audio player |
| Uploaded? | No — read locally in your browser |
How to open a .weba file
OpenAnyFile routes .weba files to its audio player, which shows a player with duration and seeking, if your browser has the codec.
- Drop your .weba file on the box above, click it to choose the file, or paste it with Ctrl+V.
- The real format is detected from the file's first bytes — not just its name.
- The file opens in the audio player.
- Use fullscreen for a closer look, check its checksums, or download it back unchanged.
What works — and what does not
Works
Viewing and inspecting: a player with duration and seeking, if your browser has the codec. Size, type, signature and checksums are always shown.
Does not work
Editing and saving back. OpenAnyFile is a viewer, not an editor — for changes you still need the original app.
Is it safe to open a .weba file online?
Here, yes — because nothing is uploaded. Most "online viewers" send your file to their server. OpenAnyFile reads it with your browser's File API and decodes it on your own device, so there is no copy anywhere else. You can check: open your browser's network tab while opening a file — no upload appears.
Questions about .weba files
Can I open a .weba file without installing software?
Yes. OpenAnyFile opens .weba files in your browser using its audio player. You get a player with duration and seeking, if your browser has the codec, with nothing installed and no account.
How do I know a file is really a .weba file?
Check its first bytes instead of its name. A genuine WEBA file begins with 1A 45 DF A3. OpenAnyFile shows the detected type, so a renamed file is easy to spot.
Is my .weba file uploaded anywhere?
No. The file is read locally by your browser and never sent to a server — it even works offline once the page has loaded.
Does it work on phones?
Yes — on Android and iPhone, in any modern browser. You can also install OpenAnyFile as an app.
Related formats
Other formats from the same family:
Format facts checked and page updated on September 25, 2026.