chrome-extensionManifest V3 example for Chrome extension.

{
  "name": "My",
  "version": "1.2.3",
  "manifest_version": 3,
  "background": {
    "service_worker": "bg.js"
  },
  "content_scripts": [
    {
      "matches": [ "*://*/*" ],
      "all_frames": true,
      "js": ["content.js"]
    }
  ]
}ctrl + c
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