Mango

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Mango",
  "version": "0.1.1",
  "description": "Recomendation System for Codeforces Problems",
  "permissions": [],
  "icons": {
    "16": "icons/icon.png",
    "48": "icons/icon.png",
    "128": "icons/icon.png"
  },
  "action": {
    "default_popup": "src/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://codeforces.com/problemset/problem/*",
        "https://codeforces.com/contest/*"
      ],
      "js": [
        "src/content.js"
      ]
    }
  ]
}