Ritmo - Tab Audio Capture & BPM/Key Analyzer

Capture audio from any tab, detect BPM & Key in seconds, and organize your library. 100% local processing.

NEVER MISS A SOUND AGAIN Ritmo is a high-fidelity browser audio recorder with built-in BPM and key detection. Capture audio directly from your browser tabs and instantly analyze tempo and musical key. All processing runs 100% locally on your device. Recordings never leave your browser, and every capture is automatically tagged with BPM and key metadata and saved to your personal sound library. QUICK START 1. Install Ritmo from the Chrome Web Store 2. Pin the extension to your browser toolbar 3. Open a tab with audio playback 4. Click Record in the Ritmo popup CORE FEATURES HIGH-FIDELITY TAB AUDIO CAPTURE Record browser tab audio exactly as it plays and save it as uncompressed 24-bit WAV. Perfect for sampling audio from the browser, sound design, music production, podcasts, lectures, and audio extraction. INSTANT BPM AND KEY DETECTION Analyze recordings or imported audio instantly. Ritmo’s deterministic analysis engine provides fast and consistent tempo and key detection for music workflows. SMART SOUND LIBRARY Every recording is automatically saved in a searchable local sound library with BPM and key tagging. Quickly preview, organize, and export sounds to your DAW or editor. BUILT-IN AUDIO FX Enhance playback with real-time gain, bass boost, and saturation. Effects can be used for listening or recorded directly into captures. MUSICAL VERIFICATION TOOLS Play along with audio from any tab using the Virtual Piano, BPM Tapper, and Metronome to explore tempo and harmony by ear. PRIVATE BY DESIGN All capture and analysis happen entirely inside your browser. No uploads, no accounts, and no tracking. PREMIUM FEATURES Free to start. Premium unlocks additional tools for advanced workflows. • Unlimited Recording: Remove recording limits • Local File Analysis: Drag and drop WAV, MP3, FLAC, or M4A files for instant BPM and key detection • Batch Export: Download your entire sound library as a ZIP archive PERMISSIONS EXPLAINED Ritmo only requests permissions required to operate the browser audio capture engine. ActiveTab: Allows recordings to automatically use the page title as the file name. TabCapture: Enables recording of the active browser tab audio stream. Offscreen: Keeps recordings running even if the popup window is closed. Storage: Saves user settings and recording history locally in your browser. Host Permissions (All URLs): Allows Ritmo to capture audio from any website that produces sound. LINKS Website: https://ritmo.vrsm.cc Documentation: https://ritmo.vrsm.cc/docs LEGAL NOTICE Ritmo is an audio recording and analysis utility. Users are responsible for ensuring they have the legal rights to capture or use any audio content. RITMO 2.0 — COMPLETE OVERHAUL Ritmo has been redesigned with a rebuilt analysis engine, faster BPM detection, and brand new key detection. Version 2.0 introduces a redesigned interface, real-time audio FX, enhanced recording library management with search, filters, tags, and sorting, and a new musical verification tool: the Virtual Piano. Existing tools such as the BPM Tapper and Metronome have also been improved. Recording is now free to start, with optional premium upgrades for advanced workflows. © 2026 VRSM Labs --- CHANGELOG Version 2.1.0 - Mar 19, 2026 Improvements (2) - Improved header alignment and spacing. - Added copy-to-clipboard functionality for error notices. Fixes (2) - Fixed recording initialization in Chrome. - Resolved intermittent audio muting during recording sessions. Patches (1) - Improved accessibility and layout for error notices.