This extension is a browser extension that recognizes music currently playing in the current tab using Shazam's internal API and multiple alternative backends. No telemetry or other communications unrelated to music recognition are performed. To learn about the characteristics of each backend and how user data is processed, please see the Privacy Policy section. This is an unofficial project and has not received any assistance from Apple Inc. or the providers of alternative backends. Source code https://github.com/FoxRefire/Librezam ==Comparison with Similar Extensions==

Song Identifier Only supports ACRCloud backend (no humming response support) No history, auto-recognition mode, auto-retry, or microphone recognition features No support for CORS, Headless Element, or ShadowRoot detection Open source (Unlicense) API key registration required (100 requests per day free) No telemetry unrelated to music recognition
Audd Only supports Audd backend No auto-recognition mode, auto-retry, or microphone recognition features Source-available proprietary CORS, Headless Element, and ShadowRoot detection support from version 3.2.4 onwards (I provided advice on fixing these issues in the Audd extension) AudioBufferSourceNode and site-specific issues are not fixed Some sites like Twitch display messages asking to purchase API keys Sends telemetry including tab URLs, not just audio data
Librezam History feature CSV export of history Multiple backend support (Shazam, Audd, ACRCloud, Tencent, NetEase) Shazam backend available without registration or rate limits (ACRCloud backend requires API key setup) Humming and cover song recognition (ACRCloud, Tencent backends) Automatic retry with different backends or longer recording times when recognition fails Auto-recognition mode Microphone recognition mode CORS, Headless Element, and ShadowRoot detection support Site-specific fixes for TikTok and RadioGarden AudioBufferSourceNode detection support (experimental and still unstable, disabled by default) Can recognize even when a different tab is open from the one playing audio Shortcut keys to start recognition (Ctrl+E for tab audio recognition, Ctrl+Alt+E for microphone recognition) Customizable streaming providers to display in results Open source (AGPL-3.0) Cross-browser support (works on Android Firefox and Chromium) No telemetry unrelated to music recognition

===Troubleshooting===

Media elements not detected on some sites, site-specific issues occur Some sites may not start recording correctly due to DRM restrictions or site-specific issues. DRM restrictions cannot be fixed, but if site-specific issues occur, please report the problem and details via GitHub Issues. Pull requests to fix issues are also welcome. Please do not report bugs in the review section. https://github.com/FoxRefire/Librezam/issues/7
Media elements not detected on all sites This may be because the extension's site permissions have been revoked. This rarely happens when updating add-ons. Open the add-on settings permissions tab and allow the "Access to saved data for all websites" permission.
Songs are not recognized This extension's music recognition processing depends on each backend, and only the Shazam backend is used by default. If songs are not recognized correctly, try adding different recognition backends or adjusting recording time from the extension settings. Also, while Google's music recognition feature is not yet integrated as a backend in Librezam, it has very high accuracy, so it's worth trying

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