playlist-extension

Playlist Extension

Firefox browser extension that manages video playlists and tracks playback history.

Loading for Development

Load via about:debugging → "Load Temporary Add-on" → select manifest.json.

Packaging

Create an .xpi file (the extension package format — just a ZIP with a different extension). Make sure manifest.json and other top-level files are at the root of the archive, not inside a subdirectory:

zip -r playlist.xpi manifest.json background.js content_scripts/ icons/ popup/ shared/

Installing Permanently (without the store)

Option A: AMO Unlisted Signing (works on any standard Firefox)

Mozilla will sign your extension without publishing it publicly:

1. Create a developer account at addons.mozilla.org
2. Submit the .xpi as "unlisted" (self-distribution, not public)
3. Mozilla reviews it (usually auto-approved for unlisted) and returns a signed .xpi
4. Install the signed .xpi permanently on any standard Firefox — no dev mode needed

The extension never appears in the public store.

Option B: Unsigned .xpi on Firefox Developer Edition or Nightly

Standard Firefox release enforces signature checks and ignores the bypass preference. Firefox Developer Edition and Nightly have xpinstall.signatures.required set to false by default, so they accept unsigned .xpi files as permanent installs.

Drag-and-drop the .xpi into the browser, or go to about:addons → gear icon → "Install Add-on From File".