Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud.
(Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)

SoundFixer: The Ultimate Add-On for Fixing Sound Issues
SoundFixer is a Firefox add-on designed to alleviate common audio problems associated with streaming video sites. It adjusts audio in one channel only, reduces excessively loud volumes, and boosts quiet ones, significantly enhancing your viewing experience. However, due to cross-domain constraints, it may not work on all websites. But, rest assured, it works perfectly with YouTube.
Add-on stats
Manifest V2
By: Val Packett
Rating: 4.42
1 new ratings
(385)
Weekly download count: 920
Firefox on Android: Yes
Permissions:
- activeTab
- webNavigation
Size: 16.29K
URLs: Website
Full description: See detailed description
Ranking
# 337 ▼ 2
User reviews
Pros
- Effective volume boosting for videos, especially on YouTube
- Fixes sound issues such as clipping
- Open source with fewer permissions than other add-ons
- Simple to use with a clear interface
- Works with some websites despite limitations
Cons
- Does not work on all websites consistently
- Requires resetting for each new video on platforms like Netflix
- Limited effectiveness with higher gain settings
- May not provide significant difference in sound amplification for some users
- Cross-domain security restrictions hinder functionality on certain sites
Most mentioned
- Works effectively for YouTube videos
- Issues with functionality on other websites
- Needs to be reset for each video on Netflix
- Sound clipping issue fix
- User-friendly interface and simple operation
User reviews
Super
by Bartosz Kaźmierczak, 2025-03-03
by 敬念法轮大法好远离瘟疫, 2025-02-17
by Alex, 2025-02-06
Add-on safety
Risk impact
SoundFixer requires very minimum permissions.
Risk impact analysis details
- High Allows retrieval of a user’s browsing history, presenting a notable privacy risk.
- Low ******* ****** ** *** ********* ********
Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of SoundFixer. Use it at your own risk.
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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