Geocaching new tab page (Finnish)

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Geocaching new tab page (Finnish)",
  "version": "0.1.6",
  "manifest_version": 3,
  "description": "Chrome-laajennos suomalaisille kätköilijöille. Linkkaa Chromen tyhjälle tabille olennaiset kätköilysivustot ja hakukentät.",
  "homepage_url": "https://www.6123tampere.com",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "background.js"
      ]
    }
  ],
  "chrome_url_overrides": {
    "newtab": "geotab.html"
  },
  "permissions": [
    "topSites",
    "bookmarks"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  }
}