Is Extract audio (MP3) free? Is there a watermark?

Yes — Extract audio (MP3) is free to use with no sign-up or watermark. Very large files can still be limited by your browser's available memory and processing resources.

Do my files get uploaded to a server?

No. Extract audio (MP3) runs entirely in your browser with WebAssembly, so your MP4, MOV, WebM, MKV file never leaves your device and nothing is stored or seen by us.

What can I put in, and what do I get out?

Extract audio (MP3) accepts MP4, MOV, WebM, MKV and gives you back a MP3 file. Actual codec support depends on what the bundled engine or browser decoder can read.

What quality is the MP3 audio?

The default audio stream is encoded as variable-bitrate MP3. The conversion is lossy and alternate source tracks are not exposed for selection.

Free tools · Extract

Extract audio (MP3)

Extract the audio from a video and save it as an MP3. Runs in your browser — no upload, no watermark.

Runs entirely in your browser. Your file is never uploaded — no watermark, no account.

Drop a file or click to chooseMP4, MOV, WebM, MKV

Get a better result

Best for: Pulling default-track dialogue, music, narration, or a podcast recording from a video into a broadly playable audio file.
Input → output: MP4, MOV, WebM, or MKV input becomes variable-bitrate MP3 through LAME quality level 2, with the video stream omitted.
Quality tip: Listen for the intended default track first, then compare speech consonants, cymbals, ambience, and duration against the source video.
Know before running: MP3 is lossy, and alternate audio-track selection is not exposed. A silent source fails, while already-compressed sound cannot regain detail through extraction.
Next step: Compress audio when the extracted MP3 still exceeds an attachment limit.

How to use Extract audio (MP3)

1
Choose your file. Drop a supported MP4, MOV, WebM, MKV file into the tool, or click to select one. It stays on your device — nothing is uploaded.
2
Run locally. Press Run to begin. The first processing run loads the browser engine before local processing begins.
3
Download. Review the result, then download the finished file from your browser with no watermark.

Frequently asked questions

Is Extract audio (MP3) free? Is there a watermark?: Yes — Extract audio (MP3) is free to use with no sign-up or watermark. Very large files can still be limited by your browser's available memory and processing resources.
Do my files get uploaded to a server?: No. Extract audio (MP3) runs entirely in your browser with WebAssembly, so your MP4, MOV, WebM, MKV file never leaves your device and nothing is stored or seen by us.
What can I put in, and what do I get out?: Extract audio (MP3) accepts MP4, MOV, WebM, MKV and gives you back a MP3 file. Actual codec support depends on what the bundled engine or browser decoder can read.
What quality is the MP3 audio?: The default audio stream is encoded as variable-bitrate MP3. The conversion is lossy and alternate source tracks are not exposed for selection.