Your lossless library, pocket-sized — FLAC albums to MP3 at the bitrate you choose, on your own device.
MP3, WAV, M4A, FLAC, OGG… — or drop a video (MP4, MOV, WebM) to extract its audio · nothing is uploaded
No size limit · files are processed on your device and never uploaded · how it works
MP3 conversions run instantly in your browser — nothing to download. Other formats use the FFmpeg engine (31 MB, once).
Plays everywhere — the safe choice.
192 kbps is transparent for most music; 128 suits voice; 320 is the maximum.
Runs in your browser. Files are never uploaded — you can go offline after the page loads.
Drop files, pick options, download. Whole folders at once, no signup, no daily limit.
The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.
Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.
This page opens the Audio Converter pre-set to MP3. Drop a whole album of FLACs; download one ZIP of MP3s.
Conversion is FFmpeg in WebAssembly, in your browser — a music collection never has to touch someone else’s server.
This is a pre-set view of the Audio Converter. Every option in the toolbar can still be changed.
MP3 cannot be lossless, but 256–320 kbps is indistinguishable from the FLAC for almost everyone. 192 kbps is the sweet spot for size; keep the FLACs as your archive.
Yes — metadata is mapped across, so titles and artists survive the conversion.
Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.
InfyTool is built by the same team as these free libraries.