Audio tools that never upload your files
Compress a file, convert between MP3 and WAV, trim a clip on its waveform, pull the sound out of a video, or even out a recording that came in too quiet. Everything runs on your own machine.
Audio compressor
Shrink a file to a size you pick, without wrecking it.
OpenMP3 / WAV converter
Move between MP3, WAV, M4A, OGG and FLAC.
OpenAudio trimmer
Cut to the part you actually want, on the waveform.
OpenExtract audio from video
Pull the soundtrack out of any video file.
OpenVolume booster & normalizer
Make a quiet recording loud enough — evenly.
OpenYour audio never leaves
There is no server to upload to, no API and no analytics. The page ships a Content-Security-Policy that permits exactly one cross-origin request — downloading the FFmpeg engine itself — and the browser blocks everything else. Your files are not part of that.
Recordings are personal
A voice memo, an interview, a demo track that is not released yet — these are not things to hand to an ad-funded converter that keeps a copy on someone else’s disk. Here the file is opened by your own browser and stays there.
Nothing is remembered
No accounts, no cookies, no upload history. Close the tab and every trace of what you were working on is gone with it.
How it works
Three steps. The heavy lifting is done by WebAssembly running on your own machine, so the audio you are working on never touches the internet.
- 01
Drop a file in
Pick a tool and drag your audio or video onto it. The file is read straight off your disk by the browser — no upload progress bar, because there is no upload.
- 02
It processes locally
A full build of FFmpeg, compiled to WebAssembly, runs inside this tab using your own CPU. The first job downloads the engine; after that it is cached.
- 03
Save the result
Listen to the output, then download it. The finished file was assembled in memory on your machine and was never transmitted anywhere.