Examine source code of Diff Viewer

{
  "manifest_version": 2,
  "name": "Diff Viewer",
  "version": "1.0.0",
  "description": "Compare two texts and see added, removed and unchanged lines. LCS-based diff. Fully offline.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{f42e2956-b048-435a-be6d-b4b93b9d7f39}",
      "strict_min_version": "96.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Diff Viewer",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  }
}