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A free audio editor that runs in your browser. It has 45 tools, from slowed + reverb and vocal removal to noise reduction, real pitch and tempo control, 8D audio, loudness normalization, cutting, joining and recording. There is nothing to install and no account.

It is made for quick jobs that would otherwise mean opening a full audio workstation: a ringtone, a cleaner voice note, a karaoke version, a podcast at the right loudness.

No. When you open a file, your browser decodes it into memory on your device. Every effect runs there, and the MP3 or WAV you download is encoded there too, using the Web Audio API and a background worker. After the page has loaded you can switch off your connection and keep working.

Your current session is kept in your browser’s own storage so a refresh does not lose it. Saved projects stay there too, and you can delete them from the studio.

You can open MP3, WAV, M4A, AAC, FLAC, OGG and Opus, and the soundtrack of MP4, WebM and MOV videos, as far as your browser can decode them. You can save MP3 from 96 to 320 kbps, with title, artist, album and cover art, or WAV at 16-bit, 24-bit or 32-bit float.

The three levels show the same tools with more or fewer controls. Switch at any time from the top bar; nothing you have done is lost.

• Simple: presets as big buttons, the one slider that matters, a single download button.
• Standard: every main control, several effects stacked in the studio, compare and undo, MP3 or WAV quality and tags.
• Pro: every parameter with typed values, level meters and spectrum, loop and zoom, sample rate and 32-bit export, saved projects and keyboard shortcuts.

The studio shows your audio’s path from top to bottom: your file, then each effect, then the output you export. Use the plus between two effects to insert one there, the arrows to reorder, and the switch on each effect to turn it off without losing its settings.

Noise reduction, vocal removal and tempo or pitch changes are rendered before playback, in that order, because they work on the whole file. Everything else plays live in the order shown.

Everything runs on your own device, so speed depends on its processor and memory. These take longest:

• very long files, such as a two-hour podcast;
• time-stretching, noise reduction and vocal removal on long files;
• MP3 encoding, which is slower than writing WAV.

If an MP3 export takes too long, export WAV first: it is written almost instantly.

Distortion usually means the audio is too loud for digital audio’s ceiling. Strong bass boosts and stacked volume changes are the common cause. Exports are protected by a limiter, but very large boosts still sound crushed. Lower the boost, turn on Prevent clipping in the Bass Booster, or use the Loudness Normalizer at the end of the chain.