Security checks
Use a modern browser, keep your operating system updated, and avoid files that ask you to install extra software before an MP3 can play.
- Look for the HTTPS lock.
- Avoid browser extensions pushed by popups.
- Scan suspicious files before opening them.
Quality checks
MP3 bitrate can affect size and clarity, but a high bitrate label does not improve a low-quality source. For speech, 128kbps is often enough. For music, 192kbps or 320kbps may be preferable when available.
Rights checks
Only download recordings that are public domain, Creative Commons with compatible terms, your own uploads, licensed purchases, or files where the rights holder has clearly allowed downloading.