Examine source code of Weiva, search in style!

{
  "version": "1.1resigned1",
  "author": "Weiva.io",
  "homepage_url": "https://weiva.io/",
  "chrome_url_overrides": {
    "newtab": "new_tab.html"
  },
  "icons": {
    "32": "icon32.png",
    "48": "icon48.png",
    "96": "icon96.png",
    "128": "icon128.png"
  },
  "description": "Displays a beautiful random image when you open a new tab in your browser. You can also launch a web search directly from the tab.",
  "manifest_version": 2,
  "name": "Weiva, search in style!",
  "short_name": "Weiva",
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8456f5e9-7da5-48cf-b57f-35fa795b4685}"
    }
  }
}