Examine source code of Stopic

{
  "name": "Stopic",
  "description": "Remove or highlight search images by keyword in domain (for google and yandex)",
  "version": "1.0",
  "author": "miqo",
  "content_security_policy": "default-src 'self'; style-src 'sha256-i2o/Qso8R+cdeVMHkkUKVW/yKolaEq/QlIf9rNbi3+E='",
  "manifest_version": 2,
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.yandex.ru/images/*",
        "https://*.yandex.com/images/*",
        "https://*.google.com/search?*&tbm=isch*",
        "https://*.google.ru/search?*&tbm=isch*"
      ],
      "js": [
        "script.js"
      ],
      "css": [
        "style.css"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "save.png",
    "options.png",
    "options.html"
  ]
}