Examine source code of FigPii

{
  "name": "FigPii",
  "short_name": "FigPii",
  "version": "2",
  "author": "Muhammad Hamoly",
  "manifest_version": 2,
  "offline_enabled": false,
  "description": "FigPii is here to help you control running A/B tests",
  "icons": {
    "16": "favicon-16x16.png",
    "32": "favicon-32x32.png",
    "48": "favicon-48x48.png",
    "128": "favicon-128x128.png"
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "storage",
    "cookies",
    "tabs"
  ],
  "browser_action": {
    "default_title": "FigPii",
    "default_popup": "./index.html",
    "default_icon": {
      "16": "favicon-16x16.png",
      "32": "favicon-32x32.png",
      "48": "favicon-48x48.png",
      "128": "favicon-128x128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "./content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "./background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "reza@figpii.com",
      "strict_min_version": "92.0"
    }
  }
}