manifest.json

{
  "manifest_version": 3,
  "name": "LeetPaint - Paint Tool for LeetCode",
  "version": "1.0",
  "description": "LeetPaint is paint tool for LeetCode where users can draw and annotate problem diagrams, empowering problem solving.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": ["https://leetcode.com/problems/*"],
      "css": ["css/content.css"],
      "js": ["js/content.js"]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": ["*"],
      "matches": ["<all_urls>"]
    }
  ],
  "host_permissions": [
        "*://leetcode.com/*"
  ]
}