Install in Firefox

Try the extension in Firefox. It stays until Firefox closes, until it is listed in Firefox Add-ons.

Type about:debugging#/runtime/this-firefox in the address bar, click Load Temporary Add-on and choose manifest.json in the extracted folder.

Firefox removes temporary add-ons when it closes. A permanent install comes with the Firefox Add-ons listing.

Install in Chrome, Edge or Brave

Add the Raptor Downloader extension by hand in about a minute, until it is listed in the stores.

Problems and fixes

The common problems, what they mean and what to do. Every error in Raptor also says this on screen.