Chess Utils

Tracking since Apr 1, 2026.

Changelog

• Apr 20, 2026
  description

  Features:
  - button for lichess analysis in popup after game
  - selected piece highlight (different from last move, mostly works but has some issues)
  - straight knight arrows
  - 2 custom piece sets
  - hide some ads (on the right while playing)
  - auto spectate
  - shortcuts to copy current game or position (not while playing yourself)
  
  I am not affiliated with chess.com or lichess in any way.
  This extension is experimental. **Use at your own risk.**
  
  Updates (usually takes about two days to be published):
  [2025-04-08] - Fixed Lichess analysis and copy pgn/fen (was due to a change from chess.com)
  [2025-08-08] - Fixed how we get the game data (pgn/fen)
  
  Credits and Licenses:
  - The chess pieces (simple and shaded) are adapted from the [chess pieces by Cburnett](https://en.wikipedia.org/wiki/User:Cburnett/GFDL_images/Chess), which are licenced under [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/).
  - Pieces Simple and Pieces Shaded © 2025 by mtw are licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).
  - Chess Utils by mtw is licensed under [GPLv3](https://www.gnu.org/licenses/gpl-3.0).

  Features:
  - button for lichess analysis in popup after game
  - selected piece highlight (different from last move, mostly works but has some issues)
  - straight knight arrows
  - 2 custom piece sets
  - hide some ads (on the right while playing)
  - auto spectate
  - shortcuts to copy current game or position (not while playing yourself)
  
  I am not affiliated with chess.com or lichess in any way. **Use at your own risk.**
  
  Updates (usually takes about two days to be published):
  [2025-04-08] - Fixed Lichess analysis and copy pgn/fen (was due to a change from chess.com)
  [2025-08-08] - Fixed how we get the game data (pgn/fen)
  [2026-04-01] - Fix "Lichess Analysis" button not being shown
  
  Credits and Licenses:
  - The chess pieces (simple and shaded) are adapted from the [chess pieces by Cburnett](https://en.wikipedia.org/wiki/User:Cburnett/GFDL_images/Chess), which are licenced under [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/).
  - Pieces Simple and Pieces Shaded © 2025 by mtw are licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).
  - Chess Utils by mtw is licensed under [GPLv3](https://www.gnu.org/licenses/gpl-3.0).

Permissions & access

Permissions

storagescripting

Host access

https://www.chess.com/*, https://lichess.org/*

Screenshots

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