Examine source code of SLext

{
  "name": "SLext",
  "short_name": "SLext",
  "description": "SLext enhances your editing experience on Overleaf by providing tabs, themes and more to the Overleaf website.",
  "version": "1.8.1",
  "manifest_version": 3,
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "64": "images/icon-64.png",
    "128": "images/icon-128.png"
  },
  "permissions": [],
  "content_scripts": [
    {
      "matches": [
        "https://www.sharelatex.com/*",
        "https://*.overleaf.com/*"
      ],
      "css": [
        "styles/contentscript.css",
        "styles/theme.css"
      ],
      "js": [
        "scripts/loader.js"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "scripts/injected.js"
      ],
      "matches": [
        "https://*.overleaf.com/*"
      ]
    }
  ],
  "action": {
    "default_icon": {
      "16": "images/icon-16.png",
      "32": "images/icon-32.png",
      "48": "images/icon-48.png",
      "64": "images/icon-64.png",
      "128": "images/icon-128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3aa0ad89-1be3-44a7-acf6-0263ff183c21}"
    }
  }
}