# Librezam

> Open-source music recognition extension using Shazam API (also supports Audd, ACRCloud, Tencent, and NetEase APIs as alternative backends)

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

## Overview

- **ID:** `librezam`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** FoxRefire
- **Category:** search-tools,photos-music-videos,games-entertainment
- **Daily users:** 50,377
- **Weekly downloads:** 1,920
- **Rating:** 4.76 / 5 (125 ratings)
- **Version:** 5.9
- **Last updated:** 2026-04-09
- **First published:** 2024-08-31
- **Size:** 544 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/librezam/)
- **Website:** [https://github.com/FoxRefire/Librezam](https://github.com/FoxRefire/Librezam)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/librezam/privacy/](https://addons.mozilla.org/firefox/addon/librezam/privacy/)

## Description

Librezam is an open-source browser extension that recognizes music playing in any tab using Shazam’s internal API with optional fallbacks to Audd, ACRCloud, Tencent and NetEase. It supports humming and cover-song recognition (where backends allow), automatic retry across backends, auto-recognition mode, and microphone recording. Results can show customizable streaming providers and include site-specific fixes for services like TikTok and RadioGarden.

Privacy-focused and community-driven, Librezam sends no telemetry unrelated to music recognition and is released under AGPL-3.0 with source on GitHub. Key features include recognition history with CSV export, CORS/Headless/ShadowRoot and AudioBufferSourceNode detection, cross-browser support (Chromium and Android Firefox), keyboard shortcuts, and troubleshooting guidance. This is an unofficial project — contributions and issue reports are welcome.

## Rankings

- #324 — Overall
- #26 — Games & Entertainment
- #33 — Search Tools
- #43 — Photos, Music & Videos
- #87 — support
- #121 — song

## Permissions and access

### Permissions

- `webNavigation`
- `storage`
- `notifications`
- `unlimitedStorage`

### Host permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension was updated more than 6 months ago. Older versions are more likely to be stable and safe.

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

## Review summary

Librezam is praised for reliable, fast song identification across several platforms and APIs, with a polished UI and open-source design. It can identify tracks by listening to the browser's audio, offering quick results and broad coverage (Shazam, AudD, Google Music recognition, YouTube, SoundCloud). Noted downsides include a minor UX issue in the history view, the need to have the audio tab active, and occasional OS-level setup to enable audio capture.

### Pros

- Reliable and accurate song identification across multiple platforms.
- Very fast results and responsive performance.
- Multi-API/multi-platform recognition (Shazam, AudD, Google Music recognition, YouTube, SoundCloud).
- Nice UI with an open-source design.
- Identifies songs by listening to the browser's audio (on the active tab).

### Cons

- UX annoyance in the history popup where a small icon near the delete button is hard to click.
- Requires being on the tab that is playing audio (not listening across all tabs).
- May require OS-level configuration (e.g., enabling Stereo Mix on Windows) to capture audio.

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