Privacy

Your audio stays in your browser

OpusMP3 is a static browser-based converter. The selected audio file is processed locally by your browser and is not uploaded to a backend server by this site.

This privacy page is intentionally plain: the main privacy benefit of OpusMP3 is that conversion happens on your device. The site creates an MP3 download in the browser after you choose a file, rather than sending your source audio to a remote conversion queue.

Files

Files you choose are used only for the current conversion session. Reloading or closing the page clears the selected file and generated download URL.

OpusMP3 does not ask for your email address, does not require signup, and does not intentionally collect file names, audio content, or converted MP3 files.

Analytics

This MVP does not include analytics scripts. If analytics are added later, keep them privacy-friendly and avoid collecting file names or audio contents.

Encoder script

The page includes an unmodified, separately loaded copy of the lamejs MP3 encoder, which is based on the LAME project and distributed under the LGPL. The deployed repository includes its notice at /assets/vendor/lamejs-LICENSE. The audio file itself remains in the browser during conversion.

Practical limits

Browser-local conversion uses your own device memory and browser audio support. For very sensitive files, use a trusted personal device and keep your browser and operating system up to date.