Examine source code of Metadata Forensics

{
  "manifest_version": 3,
  "name": "Metadata Forensics",
  "version": "1.0",
  "description": "100% offline file inspector • Size, hash, last modified, text stats, audio tags • No tracking • No permissions",
  "icons": {},
  "sidebar_action": {
    "default_title": "Metadata Forensics",
    "default_panel": "sidebar.html"
  },
  "permissions": [],
  "host_permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "metadata_forensics@libor_benes.dev",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}