Tools for DJs — Mashups, BPM, Key, Acapellas
22 toolsEverything for getting tracks ready for a set: a mashup of two songs matched in tempo and key, BPM and key with Camelot codes, acapellas and instrumentals, stems, extended intros, tempo and key changes, clean radio edits — right in your browser.
Audio
Mashup Maker
Put the singer of one song on the beat of another: the tool separates both songs, matches tempo and key, lines the vocals up with the bars and mixes the result.
Time-Stretch to Target BPM
Change tempo without changing pitch — no chipmunk voice
Change Pitch
A powerful browser-based pitch shifter with real-time preview, automatic key detection, BPM analysis, and precise semitone/cent control. Transpose any song to match your vocal range or instrument key.
Audio Speed Changer
Speed up or slow down audio from 0.05x to 10x without changing pitch. Perfect for practice and transcription.
Audio Mixer
Mix multiple audio tracks with per-track volume, pan, EQ, reverb, and compressor. Export your mix in any format.
Audio Looper
The most powerful audio looper online — repeat songs with crossfade, gap control, A/B section loop, fade effects, and target duration mode. Browser-based.
Music Mastering
Online music mastering — streaming loudness, true-peak limiting, reference matching, WAV/MP3 download.
Equalizer
Professional 10-band equalizer with real-time preview, spectrum analyzer, and 14 presets. Adjust bass, treble, mids, apply high/low-pass filters — all directly in your browser.
Reverb & Echo
Add reverb, echo, or both to your audio. Apply to the entire file or just a selected region. Real-time preview, 12 presets, in your browser.
Trim Audio
Provide a start time and an optional end time to cut a fragment.
Audio Joiner
Combine multiple audio files into a single track with per-clip editing, smooth crossfades, and loudness normalization — all in your browser.
Convert Audio
Convert audio between MP3, WAV, FLAC, OGG, AAC and 35+ other formats. Batch up to 500 files — adjustable bitrate, sample rate, and quality.
Word removal from a song
Click a syllable on the vocal lane to select it.
Audio Profanity Remover
AI speech recognition finds swear words and mutes exactly those words by timecode
Audio Censor
Audio censor tool with 8 replacement types — beep, silence, reverse, pitch shift, noise and your own sound. Waveform editor with real-time preview.
Voice & Speech
Vocal Remover
Separate vocals from music using AI. Get instrumental and acapella tracks for karaoke and remixes.
Stem Splitter
Split a song into vocals, drums, bass and instruments with the Demucs neural network. Every track as a separate file — or straight into the mixer.
Drum Remover
A neural network takes the drums out of a finished track right in your browser: you get the song without drums — a drumless backing track — and the drum part on its own.
Drum Separator
Break a drum track into kick, snare, toms and cymbals with hi-hat using a neural network right in your browser. Each part as a file — or into the mixer. A whole song works too: the drums are lifted out of it first, and you also get the song without drums.
Analysis
BPM & Key Finder
Upload a song to detect BPM, musical key, and Camelot notation. Includes tap-tempo for manual detection.
Mix Reference Analyzer
Compare your mix to a reference track: LUFS, spectrum, dynamics, stereo and precise recommendations.
Audio Metadata Editor
View, edit or strip ID3 tags, cover art and comments via WebAssembly