# AudioNormalizer

> 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).

Canonical page: [https://chrome-stats.com/d/audionormalizer](https://chrome-stats.com/d/audionormalizer)

## Overview

- **ID:** `audionormalizer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Viloja
- **Category:** photos-music-videos
- **Daily users:** 167
- **Weekly downloads:** 41
- **Rating:** 3.67 / 5 (3 ratings)
- **Version:** 1.4
- **Last updated:** 2026-07-26
- **First published:** 2026-03-04
- **Size:** 36 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/audionormalizer/)

## Description

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.

## Rankings

- #8,975 — Overall
- #62 — udio
- #79 — audio
- #96 — vimeo
- #160 — comfort
- #175 — level

## Permissions and access

### Permissions

- `storage`
- `activeTab`
- `tabs`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/audionormalizer)