Examine source code of Pinus Maximus

{
  "manifest_version": 2,
  "name": "Pinus Maximus",
  "description": "A free, privacy-friendly new tab pinboard for saved links, shortcuts, screens and groups.",
  "version": "1.0.2",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "incognito": "not_allowed",
  "content_security_policy": "script-src 'self'; object-src 'none'; base-uri 'none'; form-action 'none'; frame-ancestors 'none';",
  "browser_specific_settings": {
    "gecko": {
      "id": "@pinus-maximus.pinusmaximus.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "searchTerms",
          "browsingActivity"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "optional_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  }
}