Examine source code of Refined: Better Reddit Experience

{
  "manifest_version": 2,
  "name": "Refined: Better Reddit Experience",
  "description": "2023 Reddit extension Set up new themes, fonts, remove annoying notifications, popups, and so on!",
  "version": "1.0.0",
  "icons": {
    "128": "assets/icons/icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "128": "assets/icons/icon128.png"
    }
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*"
      ],
      "js": [
        "assets/js/content.js"
      ],
      "css": [
        "assets/graphs/main.css"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "assets/js/background.js"
    ],
    "persistent": false
  },
  "web_accessible_resources": [
    "/assets/graphs/*.css",
    "/assets/graphs/img/*.png",
    "/assets/graphs/img/*.svg",
    "/assets/graphs/fonts/*.css",
    "/assets/graphs/themes/*.css",
    "/assets/graphs/fonts/caprasimo/*.woff2",
    "/assets/graphs/fonts/gabarito/*.woff2",
    "/assets/graphs/fonts/inter/*.woff2",
    "/assets/graphs/fonts/merriweather/*.woff2",
    "/assets/graphs/fonts/montserrat/*.woff2",
    "/assets/graphs/fonts/noto_sans/*.woff2",
    "/assets/graphs/fonts/nunito/*.woff2",
    "/assets/graphs/fonts/pixelify/*.woff2",
    "/assets/graphs/fonts/playfair/*.woff2",
    "/assets/graphs/fonts/poppins/*.woff2",
    "/assets/graphs/fonts/roboto/*.woff2",
    "/assets/graphs/fonts/roboto_condensed/*.woff2"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ed720948-5d32-488f-83d7-1869b11b93da}"
    }
  }
}