MP3 Converter

MP3 Converter

Pure JavaScript MP3 converter to encode media files into MP3 format and add ID3 Tags

MP3 Converter promo image
What is MP3 Converter?

MP3 Converter is a convenient Edge extension that adds a conversion tool to your toolbar. It allows users to convert media files (both video and audio) into MP3 format efficiently. Utilizing your browser's decoding capabilities, this extension supports local and remote files. The converted files are nestled in your default download directory for ease. It also offers functionalities to convert media directly from your browser context menu. Additionally, this tool uses a custom decoder that can tackle almost all media sources, ensuring a fail-safe operation.

By: Bermet
Users: 2,022
Rating: 4.80 (5)
Version: 0.3.4 (Last updated: 2023-07-15)
Creation date: 2021-07-15
Risk impact: Low risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 3
  • downloads
  • storage
  • contextMenus
Size: 3.99M
Stats date:

Other platforms

MP3 Converter
MP3 Converter (v0.3.4)
4.20 (51) 82,732
Not available on Firefox

This extension adds a button to the toolbar area which brings up the actual conversion tool. Just drop one or multiple media files (both video or audio types are supported) and wait for the extension to convert audio streams to MP3 format. After a successful conversion, files will be placed in your default download directory. You can press each item in the UI to navigate to the converted MP3 file.

Conversion Process: local files -> read content -> decode -> convert remote files -> download -> decode -> convert

Note that you can copy media links to the clipboard and then use the "Parse content from clipboard" option to extract media links from the clipboard. Also, it is possible to select media links in a browser tab and drop selection into the converter window. The extension will extract all the links and convert media links


  1. This extension uses pure JavaScript engine to convert media files to MP3 format. There are no external dependencies.
  2. This extension uses your browser's internal engine to decode media files so to be able to convert a media file to MP3 format, your browser should be able to play the media file. This means if a format is not yet supported by your browser, the extension will not be able to convert
  3. You can convert from right-click context menu over links, audio and video elements too. Just press "Convert to MP3" context menu item.
  4. You can stop the conversion process at any time by pressing the close button on the right side of each entry.
  5. As of version 0.2.0, this extension supports a custom decoder and muxer which activates if the browser's native decoder fails. The custom decoder is based on FFmpeg project and can decode almost all possible media sources even if the media source cannot be parsed by your browser.
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User reviews
zuverlässig schnell prima Vielen Dank
by Josefine, 2022-10-11

I already use foobar2000 and Mp3tag as graphical front-ends for transcoding, so don't really have a need for a browser-based solution, but thought I'd try this one just to see how well it works. Well, it's not perfect, but it does work. It's using lamejs, a simplified version of the LAME encoder written in JavaScript, so the resulting MP3 quality is excellent, albeit not as optimized as it would be if you used the real LAME encoder. Also, the input to the encoder is whatever your browser would deliver to the OS during playback of the input file, so it is affected by system audio settings. My OS is set to output 48 kHz, so with this tool, a 44.1 kHz input file results in a 48 kHz MP3, which is not ideal. It would be nice if the tool would warn when such a conversion has happened. Other than that, though, it's pretty cool.
by Nunya, 2022-07-20

excellent mp3 converter works very well. thank you
by terry, 2021-03-21
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Risk impact

MP3 Converter is relatively safe to use as it requires very minimum permissions.

Risk likelihood

MP3 Converter is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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