Files are not uploadedNo server stores, forwards or analyzes your media.
Audio tool / Audio SpeedStandard
Change Audio Speed
Change tempo from 0.5× to 2× and avoid another lossy encoding generation.
01
Local readBrowser memory
02
Device processingWASM Worker
03
Save resultBack to your disk
0 uploads
Capability noteSpeed changes require decoding; FLAC prevents new lossy compression but cannot restore already lost data.
Drop audio here
or choose files from this device; media content is never uploaded
audio/* · .flac · .m4a · .oggProcessing settings
Defaults to FLAC while preserving sample rate and channels
Processed only on this deviceDefaults to FLAC while preserving sample rate and channels
Cancel at any timeCancel terminates the Worker and clears the virtual file system.
You save the resultDirect file writing is used when available, with browser download as fallback.
How it works
Change tempo from 0.5× to 2× and avoid another lossy encoding generation.
- Choose media from this device.
- Set the options and review the local preview.
- Run the tool and save the result back to your device.
Formats
- Input
- MP3, WAV, M4A, FLAC, OGG and other supported audio files
- Output
- FLAC
Privacy
Processing happens in this browser with WebAssembly. The selected media is not sent to our servers.
Limitations
Speed changes require decoding; FLAC prevents new lossy compression but cannot restore already lost data.