Browser-based tools for audio-to-MIDI conversion, tempo and key detection, spectrum analysis and mastering. Nothing to install.
Current listings: 8
Every resource here is made and owned by its creator. Zanderjaz does not host these files; each link goes to the official page in a new tab. Check each creator’s license and system requirements before you use it in a release.
mp3tomidi.io
Converts MP3, WAV and other audio to MIDI in your browser using Spotify's open-source Basic Pitch model. Files are not uploaded.
Visit official page ↗Audio MIDI Converter
Turns a melody, riff or isolated part into a downloadable .mid file. It also accepts video files, and processing stays on your device. Dense mixes may need note cleanup.
Visit official page ↗BeatTiming
A timing toolkit: tap tempo, BPM-to-ms, delay and reverb times, bars-to-time, BPM-to-Hz for LFOs and sample-length calculators.
Visit official page ↗BPM Tapper
Tap out a tempo with the mouse or space bar, or estimate the BPM of an audio file locally in the browser. Ad-supported.
Visit official page ↗FindKeyBPM
Finds a song's key, BPM and Camelot code in the browser. Handy for harmonic mixing and tagging a library.
Visit official page ↗Pitch Tempo
Get a key/BPM estimate and change pitch (±12 semitones) or speed (50–150%) separately, then export. Guests get 3 uploads per day. Files are processed on the site's server.
Visit official page ↗Online Spectrum Analyzer
An FFT spectrum and spectrogram for mic input or audio files. Useful for spotting hum, noise, clipping and resonances. Optional paid Pro features.
Visit official page ↗Waveroom Mastering
Browser mastering with presets, A/B comparison, EQ and a stereo imager, plus a vocal remover. The first 3 mastering tracks are free; paid passes and plans cover more.
Visit official page ↗
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