Examine source code of Dreamwidth Link Embed

{
  "manifest_version": 3,
  "name": "DW Link Embed Quote Fix",
  "version": "6.3",
  "description": "Adds a Link embed option to Dreamwidth file listings so you can copy a plain HTML anchor tag for your images. Optionally include the upload description as a title attribute.",
  "content_scripts": [
    {
      "matches": [
        "https://www.dreamwidth.org/file/list*",
        "https://*.dreamwidth.org/file/list*",
        "https://www.dreamwidth.org/file/new*",
        "https://*.dreamwidth.org/file/new*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "dreamwidth-link@example.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "storage"
  ]
}