Lichess2Chess

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Lichess2Chess",
  "version": "1.2",
  "description": "Adds Chess.com rating estimate to Lichess.org.",
  "icons": {
    "48": "images/icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://lichess.org/*"
      ],
      "js": [
        "lichess2chess.js"
      ]
    }
  ]
}