Examine source code of Snipsta

{
  "manifest_version": 3,
  "name": "Snipsta",
  "version": "1.4",
  "description": "SEO Data at Your Fingertips",
  "permissions": [
    "activeTab",
    "scripting",
    "webRequest",
    "webNavigation"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "img/icon16.png",
      "48": "img/icon48.png",
      "128": "img/icon128.png"
    }
  },
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "snipsta@seosnips.de",
      "strict_min_version": "121.0"
    }
  }
}