mp3→midi Fast and HQ Local keep audio on your device

Privacy Policy

Last updated: 1 October 2026

Your audio stays on your device

Vocal, Piano, Guitar, Bass, Other instrument, Full Song Fast and Full Song HQ Local are processed inside your browser. The active converter does not upload your source audio to a conversion server.

The browser does download the page, scripts and whichever AI model files are needed. HQ Local can download a large BS-RoFormer model and cache it in browser storage. Those network requests fetch converter/model assets; they do not send your song to the model host.

What we do not ask for

No account, no email address, no sign-up, no payment. You do not have to identify yourself to use the converter, so there is nothing for us to link your conversion to.

Cookies and local storage

The converter keeps conversion state in memory. HQ Local may use browser-managed Origin Private File System storage to cache the large separation model so it does not need to be downloaded again. The cached file is an AI model, not your uploaded song.

Server logs

The site is served by a hosting provider. Like essentially every website, that provider necessarily handles routine request information — your IP address, the page you requested, your browser's user agent, and the time of the request — in order to deliver the files and to keep the service available. This is standard web hosting traffic data, not something the tool adds.

Advertising — planned for the future

We intend to place third-party advertising on this site at a later date. When we do, the pages will load scripts from an advertising network, and this policy will be updated before that happens.

Be aware of what that means: an advertising network is a third party that may collect data such as your IP address, user agent, referring page and ad interactions, and may set its own cookies or similar identifiers, including for interest-based advertising. Once those scripts are loaded, their handling of your data is governed by that network's own privacy policy, not by this one. We do not control it and cannot speak for it.

Advertising scripts are separate from the conversion pipeline. Source audio remains local in both Fast and HQ Local modes and is not intentionally sent to an advertising network.

Email

If you write to the address on our contact page, we receive your message and your email address, and we use them only to reply. We do not sell or share them.

Changes

If this policy changes, the updated version will be posted on this page with a new date. Material changes, such as the introduction of advertising, will be reflected here before they take effect.

Questions

Use the address on the contact page if anything here is unclear.