Chess Rank — ELO Badge System

<Chess Rank brings a ranked badge system to Chess.com, inspired by competitive games like League of Legends or Valorant. As you browse Chess.com, a rank badge automatically appears next to every player's username — giving you an instant, visual sense of their skill level. How it works Chess Rank fetches each player's highest ELO rating across Rapid, Blitz, Bullet, and Daily time controls via the Chess.com public API, then assigns them one of 9 ranks: - Unranked — 0 ELO - Pawn — 0–400 ELO - Knight — 400–800 ELO - Bishop — 800–1200 ELO - Rook — 1200–1600 ELO - Queen — 1600–2000 ELO - King — 2000–2400 ELO - GrandMaster — 2400–2800 ELO - Immortal — 2800+ ELO Each rank includes subdivisions (I to IV) for even more granularity. Features - Automatically injects badges next to player names across Chess.com — on game boards, profiles, leaderboards, tournaments, game archives, and more - Hoverable tooltips showing rank name, division, and exact ELO - Smart caching to avoid redundant API calls - Works seamlessly on Chess.com's single-page navigation - Lightweight, privacy-friendly — no data collected, no account needed Want to know your rank without installing the extension? Head over to https://chessrank.netlify.app — the official Chess Rank website. Enter any Chess.com username to instantly see their rank, ELO rating, and division. It's also a great way to convert any ELO score to its corresponding rank, or to look up your own profile before your next game. A fresh way to see the Chess.com world at a glance. Know who you're up against before the first move.