Last updated: July 16, 2026

SoundSilo is a browser extension (Chrome and Firefox) that helps
editors, composers, and producers keep track of royalty-free music and
sound-effect downloads and — where the browser allows it — organizes
those downloads into folders and reads bundled cue-sheet metadata.

The short version

SoundSilo does not collect, transmit, sell, or share any data.
Everything it does happens entirely on your computer.

What SoundSilo processes, and where it stays

To do its job, SoundSilo works with the following information — all of
it locally, on your device only:

• Download details (file names and the addresses of pages you
  download from on music/SFX library sites), written to a log file (a
  CSV) either inside your Downloads folder (Chrome) or wherever your
  browser’s own download settings place it (Firefox).
• Your settings (project names, tracked-site list, folder name
  preferences), stored in the extension’s local browser storage.
• Links on library site pages: at the moment you download a track,
  SoundSilo may read the address of that track’s page from the site
  you are viewing, so your log can record the specific track rather
  than a generic search page. It reads link addresses only — it does
  not read, modify, or store page content.
• Bundled cue-sheet metadata: when a site’s zip download includes a
  metadata file (track title, composers, publishers, ISRC), SoundSilo
  reads it directly off your own disk — on Chrome, automatically via a
  hidden helper page after the zip finishes downloading; on Firefox,
  only when you manually pick the file yourself, since Firefox doesn’t
  let extensions read local files any other way — and adds that
  information to your local log. The zip’s contents never leave your
  computer at any point in this process.

None of this information ever leaves your computer. SoundSilo has no
servers, no analytics, no accounts, and makes no network requests.

Permissions

SoundSilo requests access to certain music/SFX library websites solely
to read track page links at download time, as described above. When
you choose to track an additional site, your browser asks for your
permission for that specific site; declining does not affect any other
feature. On Chrome, reading bundled zip metadata additionally requires
the