Convert MP3 files into the lossless FLAC format, for example to keep a music library in a single consistent format. Conversion runs in your browser, with no upload of your files.
In “Local” mode your file never leaves your device. No uploads, no server – ideal for sensitive recordings.
Pick “Local” for full privacy or “Server” for very large files and every format.
No sign-up, no queue, no watermark. Choose a file, convert, download.
No. FLAC preserves the MP3's sound exactly, but the detail lost during the original MP3 encoding does not come back. You won't get true CD quality out of an MP3.
It's useful when your library or player expects a single lossless format and you want to fold MP3s into it.
Yes, noticeably. FLAC wraps the MP3 audio without further loss, but it needs more storage than the compact MP3.
No, conversion runs directly in your browser by default. An optional server mode is available for very large files.