Examine source code of Postograph

{
  "manifest_version": 2,
  "name": "Postograph",
  "description": "Convert X posts to shareable images",
  "version": "0.0.4",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "clipboardWrite",
    "https://x.com/*",
    "https://twitter.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "postograph@roxguel",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*",
        "https://x.com/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "browser_action": {}
}