Basic JSON Formatter

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Basic JSON Formatter",
  "version": "3.0.0",
  "description": "Adds a page action to pretty-print JSON",
  "icons": {
    "48": "img/icon-48.png",
    "128": "img/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "background": {
    "service_worker": "background.js"
  },
  "permissions": [
    "storage"
  ],
  "action": {
    "default_icon": {
      "48": "img/icon-48.png",
      "128": "img/icon-128.png"
    },
    "default_title": "Format JSON",
    "default_popup": "popups/no_json.html"
  },
  "options_ui": {
    "page": "options_ui/options.html",
    "browser_style": true
  }
}