Examine source code of Gelbooru Batch Upload Tools

{
  "manifest_version": 3,
  "name": "Gelbooru Batch Upload Tools",
  "version": "1.1.0",
  "description": "Allows to save multiple images to the pocket and paste them into Gelbooru upload form",
  "browser_specific_settings": {
    "gecko": {
      "id": "gut@milesseventh.com"
    }
  },
  "icons": {
    "32": "graphics/32.png",
    "96": "graphics/96.png",
    "128": "graphics/128.png"
  },
  "permissions": [
    "storage",
    "unlimitedStorage"
  ],
  "host_permissions": [
    "https://corsproxy.io/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.gelbooru.com/*"
      ],
      "js": [
        "js/gelbooru.js"
      ]
    },
    {
      "matches": [
        "*://*.twitter.com/*"
      ],
      "js": [
        "js/twitter.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options/options.html"
  }
}