Convert an uncompressed WAV file to the noticeably smaller, still lossless FLAC locally in your browser. No upload.
Running locally on your device ...
Running locally on your device ...
0%
Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
WAV stores every sample raw and uncompressed - one minute of stereo CD quality weighs around 10 MB. FLAC (Free Lossless Audio Codec) packs the very same samples together losslessly, typically to 50-60% of the WAV size, without sacrificing a single bit of sound information.
The tool uses ffmpeg's native FLAC encoder to repack the file losslessly - a subsequent conversion back to WAV yields bit-identical samples. For a music archive, FLAC is therefore the more space-saving alternative to WAV, with no compromise in content.
Because FLAC is open and royalty-free, it is supported by most current players, NAS systems and streaming libraries - only very basic devices know exclusively WAV or MP3. The conversion runs entirely locally, with no server.
| Input formats | WAV |
|---|---|
| Auto-conversion | MP3, MP4 |
| Output format | FLAC |
| Batch processing | No |
| Processing | Locally in your browser (WebAssembly) |
| File upload | None |
Limitations: FLAC is lossless - the compression saves space without sacrificing detail. Very basic or very old playback devices may not know FLAC; WAV remains the safer choice there. One file per run.
No, the conversion runs entirely locally in the browser.
No, FLAC is lossless - the samples are bit-identical to the WAV original after conversion.
Usually 40-50% compared to WAV, depending on the music material.
Almost every current player and streaming device, but some very basic or old devices only know WAV or MP3.