Examine source code of JSONView

{
  "manifest_version": 2,
  "name": "JSONView",
  "version": "1.0.0",
  "description": "Format and visualize JSON data in Firefox with a collapsible tree view.",
  "author": "JSONView Team",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "viewer/viewer.html",
    "viewer.css",
    "viewer.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "jsonview-extension-7f2a@example.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}