FLAC is lossless: it shrinks audio by roughly half without discarding a single sample, and the original can be reconstructed bit-for-bit. It is the archival and audiophile standard, supported by every serious music player and increasingly by car and home audio systems. This tool creates FLAC files locally in your browser.
Use it to archive WAV masters at half the size, to convert recordings for a lossless music library, or to hand off audio where quality cannot be negotiated. Note that converting a lossy MP3 to FLAC preserves the MP3 sound exactly — it cannot restore quality the MP3 already discarded.
The encoder runs entirely inside your browser tab. Your masters and recordings never leave the device they are on.
No. FLAC preserves exactly what it is given. An MP3 converted to FLAC sounds identical to the MP3 — lossless conversion protects quality from that point onward but cannot recover what lossy encoding already removed.
Yes. Drop in any common video (MP4, MOV, WebM, MKV and more) and its audio track is extracted and converted automatically; the video stream is simply discarded.
No. The conversion is performed by a WebAssembly build of FFmpeg running inside your browser tab. The file never leaves your device, and closing the tab removes it from memory.