MP3 Converter Firefox

MP3 Converter

By: Balvin
Pure JavaScript MP3 converter to encode media files into MP3 format

Features & Capabilities

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.

Preview: https://www.youtube.com/watch?v=j0KeXQDRl_0 https://www.youtube.com/watch?v=m2sFFABU1c8

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

Notes:

  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.

Change Log: 0.1.3: Supporting MP3's ID3 Tags

User Growth & Download Statistics

Manifest V3 Add-on
By:
Balvin
Daily users:
399 -3
Rating:
5.00
(5)
Version:
0.4.3 Last updated: 2025-08-07
Version code:
6007226
Creation date:
2019-01-02
Risk:
Moderate risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • *://*/*
Size:
9.99MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-07-08
Compare stats and ranking:

Other platforms

Chrome
MP3 Converter (v0.4.3)
50,000 4.33 (91)
Android
MP3 Converter (v5.47)
4,790,163 3.90 (38,201)
Edge
MP3 Converter (v0.4.3)
8,833 4.90 (10)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Balvin
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/mp3-conversion/
Website:
https://add0n.com/mp3-converter.html

Permission Change History

2025-08-07: Version 0.4.2 → 0.4.3
Add Host permissions: *://*/*
Remove Optional host permissions: *://*/*
2024-08-18: Version 0.3.4 → 0.4.1
Add Optional host permissions: *://*/*
Remove Optional permissions: *://*/*

User Reviews

Incredibly easy and fast. Click and drag any video and it immediately starts converting. You can put multiple in there and it will do one at a time until they are all done.
by bl*****, 2026-04-29

Gan Jing World is a clean, curated universe and a dynamic, overlapping network of integrated platforms and services. ==> https://www.ganjing.com
by Ga*****, 2022-12-23
View all user reviews ›

Is MP3 Converter Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

MP3 Converter requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • Medium ****** ********** ** ******** ********** *** ********* ******* ******** ****** ******** ****** ********
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

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

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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