The soundtrack out of any video — lecture, interview, music — as an MP3 made 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 video and only its audio comes out. FFmpeg skips the video stream entirely (-vn), so extraction is fast even for long recordings.
Lectures for the commute, interview audio for transcription, a song from a clip you recorded — all without the video leaving your device.
This is a pre-set view of the Audio Converter. Every option in the toolbar can still be changed.
No — and for video that matters doubly: files are big and often private. FFmpeg runs in your browser; only the audio track is decoded and re-encoded, so even long videos extract quickly.
128 kbps for speech (lectures, interviews, podcasts); 192–256 kbps for music. The MP3 cannot sound better than the video’s own audio track.
This tool converts files you already have. Downloading from YouTube is governed by their terms — that part is on you; once you have a legitimate file, extraction works.
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.