Latest, 21 Oct 2026:10 usersMove the mouse over the chart for any month
Ratings count
monthly, 8 months
Latest, 21 Oct 2026:1 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About ChessDex
Chess Dex – Your Smart Chess Openings Companion
Level up your chess game with Chess Dex, the ultimate browser extension designed to help you explore, learn, and master chess openings effortlessly while you play online.
ChessDex v0.6.0 Release Notes
WHAT IS NEW IN VERSION 0.6.0
Full Lichess.org Integration
- Cross-Platform Analytics: ChessDex now works seamlessly on both Chess.com and Lichess.org!
- Automatic Opponent Scouting: Instantly view opponent ratings, win rates, opening preferences, and recent form while playing on Lichess.
- NDJSON Stream Support: High-performance streaming parsing of Lichess game archives.
Ultra-Fast Stockfish 17 Engine Analysis
- Instant Local Engine: Powered by Stockfish 17.1 Lite Single WASM running entirely client-side in your browser.
- Fast Depth 10 Search: Analyzes full games in under 2 seconds with 0 network latency.
- Message Queue Synchronization: Implemented worker buffer synchronization to ensure 100% reliable evaluation scores across all positions.
BUG FIXES & IMPROVEMENTS
Fixed repeating 10.2% analysis results with database versioning
Fixed 0% accuracy glitch caused by evaluation inversions
Cleaned Lichess DOM username extraction by stripping titles and ratings
Added safety check to prevent background script sidePanel crashes
🚀 Features
♟️ Understand Your Opponents (Chess.com)
Analyze your opponents’ played openings and tendencies on Chess.com to prepare smarter and adapt your strategy.
🔎 Instant Opening Recognition
Automatically detects the opening being played on popular chess platforms in real time.
📖 Opening Encyclopedia
Access a rich database of ECO-coded openings with names, move sequences, and variations.
🧠 Learn While You Play
Turn every game into a learning opportunity—understand the ideas behind each opening instead of just memorizing moves.
⚡ Lightweight & Fast
Built for performance with minimal resource usage—no lag, no distractions.
🏆 Who Is It For?
Beginner players learning opening fundamentals
Intermediate players expanding their repertoire
Advanced players revising lines and transpositions
Chess enthusiasts who love opening theory