AudioNormalizer

Name: AudioNormalizer
Rating: 4.3333 (3 reviews)
Author: Viloja

A lightweight extension that normalizes volume levels and gives you full gain and dynamic range control across HTML5 websites without DRM restrictions (such as YouTube, Twitch, or Vimeo).

Overview

Firefox Add-ons Store

Daily users

131 ▲ 17

Data as of 2026-08-17

Rating:

4.33

(3)

Version:

1.4

Last updated: 2026-07-26

Features & Capabilities

AudioNormalizer enhances your listening experience by applying a dynamic range compressor to HTML5 media elements on websites without DRM restrictions (such as YouTube, Twitch, or Vimeo). It automatically softens sudden loud sounds and boosts quiet audio, ensuring a smooth and comfortable listening experience.

Features:

Toggle normalization on or off and save distinct audio profiles for each website.
Adjust compression intensity and fine-tune gain levels from -100% (mute/attenuate) up to +100% (boost).
Firefox for Android Compatible.
Privacy-First & Lightweight: 100% local Web Audio API processing with zero tracking, no telemetry, and zero data collection.

⚠ Compatibility & Limitations ⚠: Due to strict browser security policies (CORS and DRM), AudioNormalizer cannot process encrypted or protected audio streams (such as Spotify, Duolingo, Netflix or similar platforms). On these websites, please disable the extension using the popup toggle to prevent playback issues.

User Growth & Download Statistics

Add-on

By:

Viloja

Daily users:

131 17

Rating:

4.33

(3)

Version:

1.4 Last updated: 2026-07-26

Version code:

6375965

Creation date:

2026-03-04

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

36.00KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-08-17

Compare stats and ranking:

Ranking

# 9,933 ▲ 717

Other rankings

#69 in udio keyword 7 ▲ 5#84 in audio keyword 34 ▲ 1#102 in vimeo keyword 29 ▲ 6#167 in comfort keyword 6 ▲ 3#184 in level keyword 33 ▲ 9

For Developers

Monetize with App Pass Boost with Extension Booster

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:

Viloja

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/audionormalizer/

User Reviews

Works very well on youtube or similar, but breaks some pages with CORS audio. For example duolingo loads its audio from a CDN and thus says its media is cross-origin. This addon seems to strip that away, resulting in no audio at all. Since I found no github, I will post this bug report here

by *****, 2026-08-05

I also found this works great. Easy to setup and control. It has been an annoyance of mine for years having to continuously adjust the volume up and down to hear speech and quiet action/scary parts of the movie. I live in an apartment building and have neighbours. Thank you Viloja :-)

by Fi*****, 2026-07-25

View all user reviews ›

Is AudioNormalizer 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.

AudioNormalizer requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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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.

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

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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