Examine source code of Collava - Quick Save

{
  "manifest_version": 2,
  "name": "Collava - Quick Save",
  "version": "1.2.7",
  "description": "Never lose an idea again. Save anything to Collava.app with one click.",
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox@collava.app"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "notifications",
    "bookmarks",
    "https://www.collava.app/*",
    "https://collava.app/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "js": [
        "js/config.js",
        "js/content.js",
        "js/content-selector.js"
      ],
      "css": [
        "css/content.css"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "js/config.js",
      "js/background.js"
    ]
  },
  "icons": {
    "16": "img/icon16-white.png",
    "48": "img/icon48-white.png",
    "96": "img/icon96-white.png",
    "128": "img/icon128-white.png"
  },
  "web_accessible_resources": [
    "img/icon48-white.png"
  ]
}