Audio & video tools
Convert, cut, measure and generate — every tool runs locally in your browser, so your recordings are never uploaded anywhere.
Most popular
Audio Format Converter
Convert between WAV, MP3, OGG, FLAC, M4A and more.
popular
Audio Trimmer
Cut a section out of an audio file, with fades.
popular
Chord Identifier
Name any chord from notes you pick or type.
popular
Euclidean Rhythm Generator
Generate world-music rhythms from two numbers.
popular
Extract Audio from Video
Rip the audio track of a video to MP3, WAV or FLAC.
popular
Slideshow Video Maker
Turn your photos into a video slideshow with music and transitions.
popular
Song Practice Studio
Drop any song and get its chords, key and tempo in sync with the music, then loop, slow down and transpose it to practise along.
popular
Subtitle Converter (SRT ↔ VTT)
Convert subtitles between SRT and WebVTT.
popular
Synth & Music Theory Studio
Play a full synthesizer in your browser — oscillators, filters and effects, with scales and chords lit up on the keys.
popular
Tone Generator
Play sine, square, saw or triangle test tones.
popular
Video Trimmer & Compressor
Trim, mute or compress a video in the browser.
popular
Video to GIF
Turn a video clip into an animated GIF.
popular
Waveform & Spectrogram Viewer
Inspect audio as a waveform and spectrogram.
Convert & Extract
Cut & Adjust
Analyze & Measure
Song Practice Studio
Drop any song and get its chords, key and tempo in sync with the music, then loop, slow down and transpose it to practise along.
popular
Waveform & Spectrogram Viewer
Inspect audio as a waveform and spectrogram.
BPM Tapper & Detector
Tap a tempo or detect BPM from an audio file.
Generate & Play
Slideshow Video Maker
Turn your photos into a video slideshow with music and transitions.
popular
Synth & Music Theory Studio
Play a full synthesizer in your browser — oscillators, filters and effects, with scales and chords lit up on the keys.
popular
Tone Generator
Play sine, square, saw or triangle test tones.
Metronome
Steady click track with accents and tap tempo.
Text to Speech Playground
Read text aloud with your system voices.
Music Theory
Subtitles
About these tools
Audio and video tools that work in the browser: convert between common formats, trim clips, extract audio from video, inspect codecs and metadata, and analyze loudness. Media files are processed locally on your device — no upload, no queue, no watermark.