Examine source code of Open in the Archive

{
  "manifest_version": 2,
  "name": "Open in the Archive",
  "short_name": "open-in-the-archive",
  "description": "Opens links in archive sites such as the Wayback Machine or Archive.is.",
  "version": "3.0.1",
  "icons": {
    "128": "icons/128x128-light.png"
  },
  "browser_action": {
    "default_icon": {
      "128": "icons/128x128-light.png"
    },
    "theme_icons": [
      {
        "light": "icons/128x128-light.png",
        "dark": "icons/128x128-dark.png",
        "size": 128
      }
    ],
    "default_title": "Open in the Archive",
    "default_popup": "badge/popup.html"
  },
  "background": {
    "scripts": [
      "common.js",
      "archives.js",
      "context-menu.js"
    ]
  },
  "permissions": [
    "tabs",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6df4ce0d-b490-4060-8fd9-276644dd0445}"
    }
  }
}