Examine source code of E6 Easy Send

{
  "manifest_version": 2,
  "name": "E6 Easy Send",
  "description": "The addon that allows you to quickly send posts from e926/e621.net to a discord channel!",
  "version": "1.4.0",
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "58.0",
      "id": "{e598ccc9-1d84-4516-b331-59b55cbfdc68}"
    }
  },
  "icons": {
    "48": "res/icons/icon-48.png",
    "96": "res/icons/icon-96.png"
  },
  "permissions": [
    "*://discord.com/*",
    "webRequest",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.e621.net/posts/*",
        "https://*.e926.net/posts/*"
      ],
      "js": [
        "src/js/main.js"
      ]
    }
  ],
  "browser_action": {
    "browser_style": true,
    "default_title": "E6 Auto Send",
    "default_popup": "src/html/main_popup_menu.html",
    "default_icon": {
      "48": "res/icons/icon-48.png",
      "96": "res/icons/icon-96.png"
    }
  }
}