Examine source code of JSON Formatter

{
  "manifest_version": 2,
  "name": "JSON Formatter",
  "version": "1.0",
  "description": "Automatically format and beautify JSON content in the browser.",
  "permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*.json",
        "*://*/*?format=json*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3f662f76-60b1-4f3f-940a-99ad4eb357c9}"
    }
  }
}