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manifest.json

{
  "manifest_version": 2,
  "name": "PageSpeed Insights Checker",
  "version": "1.0.0",
  "description": "Quickly check PageSpeed Insights for the active tab. Optionally use your own API key to fetch machine-readable results.",
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "PageSpeed Insights Checker",
    "default_popup": "popup.html"
  },
  "applications": {
    "gecko": {
      "id": "pagespeed_checker_example@example.com",
      "strict_min_version": "60.0"
    }
  }
}