Merlin
Header Checker

Header Checker

Free Header Tag Checker Tool (H1 up to H6)

Merlin
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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Header Checker",
  "description": "Free Header Tag Checker Tool (H1 up to H6)",
  "version": "2.0",
  "manifest_version": 3,
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "index.js"
      ],
      "css": [
        "index.css"
      ]
    }
  ],
  "icons": {
    "16": "images/16.png",
    "32": "images/32.png",
    "48": "images/48.png",
    "128": "images/128.png"
  },
  "action": {
    "default_icon": {
      "16": "images/16.png",
      "32": "images/32.png",
      "48": "images/48.png",
      "128": "images/128.png"
    }
  }
}