What does SoundFixer do?

SoundFixer focuses on fixing unbalanced, quiet, or excessively loud audio in online videos. It is catalogued under Audio editors & converters on PulseGate.

Who is SoundFixer for?

SoundFixer is a consumer product built for firefox users watching online videos.

Yes — SoundFixer is free to use.

What platforms does SoundFixer run on?

SoundFixer runs on the web, embeddable surfaces, and Android.

Is SoundFixer still maintained?

Unverified. SoundFixer has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to SoundFixer?

Similar projects tracked by PulseGate include SoundFixer, SoundFixer, and Sound Adjuster.

Who makes SoundFixer?

SoundFixer is developed by Nassim.

When did SoundFixer launch?

SoundFixer first shipped in 2025.

Back to the index

SoundFixer

Name: SoundFixer
Author: Nassim

mozilla.orgAudio editors & converters

SoundFixer is a Firefox browser extension that corrects common audio problems in online videos, including one-channel playback and unsuitable volume levels. It is available for Firefox on desktop and Android.

FreeWebEmbeddableAndroid

Visit mozilla.org

1alternative

5features

2025since

Overview

5 features

SoundFixer sits in PulseGate's Audio editors & converters category. It focuses on fixing unbalanced, quiet, or excessively loud audio in online videos. It is built as a consumer product for firefox users watching online videos. It is available for free. It ships for the web, embeddable surfaces, and Android.

It is developed by Nassim, and it first shipped in 2025. Key capabilities include channel balancing, volume adjustment, and online video support. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Channel balancing
Volume adjustment
Online video support
Firefox integration
Android support

Built with & integrations

Runs on

BrowserEmbeddableAndroid

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed15 Sep · 02:34 UTC
SoundFixer verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about SoundFixer

What does SoundFixer do?: SoundFixer focuses on fixing unbalanced, quiet, or excessively loud audio in online videos. It is catalogued under Audio editors & converters on PulseGate.
Who is SoundFixer for?: SoundFixer is a consumer product built for firefox users watching online videos.
Is SoundFixer free?: Yes — SoundFixer is free to use.
What platforms does SoundFixer run on?: SoundFixer runs on the web, embeddable surfaces, and Android.
Is SoundFixer still maintained?: Unverified. SoundFixer has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to SoundFixer?: Similar projects tracked by PulseGate include SoundFixer, SoundFixer, and Sound Adjuster.SoundFixer SoundFixer Sound Adjuster
Who makes SoundFixer?: SoundFixer is developed by Nassim.
When did SoundFixer launch?: SoundFixer first shipped in 2025.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users watching online videos
Model: B2C
Solves: Fixing unbalanced, quiet, or excessively loud audio in online videos.

Registered as

Firefox Add-ons: sound_fixer

Developer

Nassim

Index record

Indexed: 15 Sep 2026
Lifecycle: Alive
Last seen: 15 Sep 2026

Identity audit (13)

Slug: soundfixer-mozilla-org
Lifecycle state recorded: 15 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 15 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 15 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/sound_fixer

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