FreeMusicTools is a free collection of browser-based music tools. Make nightcore or TikTok-style sped-up tracks, convert songs to 8D or slowed + reverb, turn MP3 into editable MIDI, edit MP3 tags, shift pitch, or export an audio visualizer video. Everything runs locally in your browser. No signup, no uploads, no watermark. Pricing: Free. https://freemusictools.app/