Examine source code of Embermarks

{
  "manifest_version": 2,
  "name": "Embermarks",
  "version": "1.0.4",
  "description": "Rediscover your forgotten bookmarks. Surface the ones you never visit.",
  "author": "Bastian Gruber",
  "homepage_url": "https://github.com/gruberb/embermarks",
  "browser_specific_settings": {
    "gecko": {
      "id": "embermarks@gruberb.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/ember-48.svg",
    "96": "icons/ember-96.svg"
  },
  "permissions": [
    "bookmarks",
    "history",
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/ember-48.svg"
    },
    "default_title": "Embermarks",
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  }
}