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manifest.json

{
  "manifest_version": 3,
  "name": "HTTP Version Indicator",
  "version": "1.1.1",
  "description": "Indicate the HTTP version for the current page.",
  "icons": {
    "128": "icons/default.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a80bfac2-d81a-47a3-89ca-ea9ad213d35b}"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_end"
    }
  ],
  "page_action": {
    "default_icon": "icons/default.png",
    "default_title": "HTTP Version Unknown",
    "show_matches": [
      "http://*/*",
      "https://*/*"
    ],
    "hide_matches": [
      "https://addons.mozilla.org/*",
      "https://accounts.firefox.com/*"
    ]
  }
}