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Highlights chess notation on your board, alerts you on low time, and offers free Lichess analysis. Chess Notation Helper brings standard algebraic chess notation (SAN) to life directly on your board, no more switching back and forth between moves and notation. As you play on Chess.com or Lichess.org, this extension automatically: 1) Detects each move in real time 2) Highlights the destination square with a subtle overlay grid 3) Displays the SAN (e.g. Nf3, exd5, O-O) on that square, then fades out Handles castling, pawn promotions, captures and disambiguations seamlessly. Audio Time Alerts – Get spoken countdown warnings at customizable thresholds (30s, 10s, 5s, 3s, 2s, 1s) so you never lose on time. Free Lichess Analysis – One-click export of your Chess.com games to Lichess for free computer analysis, with automatic board orientation. Because everything runs locally in your browser, no personal data is collected or transmitted. 1) Install and enable the extension 2) Navigate to any live game on Chess.com or Lichess.org When you (or your opponent) move a piece, watch the board highlight the landing square and show its notation, instant feedback that helps you learn SAN while you play. Open extension popup to pause, change highlight duration, enable audio alerts, or analyze on Lichess. Who it's for: Beginners mastering algebraic notation Players who want audio time warnings without premium subscriptions Anyone who wants free game analysis on Lichess Coaches & students reinforcing move-to-notation connections Install Chess Notation Helper today and level up your chess experience!
Chess.com Analysis at Lichess
This extension has the following features: * Allows you to view lichess analysis for any finished chess.com game. * Works from the Game Archive as well as from finished live games * Also supports chessgames.com, chess-db.com and chesstempo.com I am not affiliated in any way with lichess or chess.com (but I'm a fan of both). Recent changes: 2026 March 31: Fixed share button for non-English browser locales. (Thanks blue_int!) 2025 December 9: Various additional fixes and improvements. 2025 December 9: Improved share dialog opening for nested controls. (Thanks guidezpl!) 2025 August 27: Fixed for changes to chess.com 2025 March 20: Fixed for change to live games URL (thanks stupidJoon!) 2024 December 4: Fixed for recent chess.com changes. Now works for World Championship games and other events. 2023 May 24: Fixed for chess.com games against computers. 2022 April 17: Fixed for change to chess.com download button. 2022 March 28: Fixed some problems with the upgrade to manifest v3. Fixed chessgames.com. Fixed for change to chess.com download button. 2022 March 27: Upgraded to Chrome manifest v3 (thanks Russell!) 2022 March 5: Prevented chess.com analysis from being sent to lichess (thanks Russell!) 2021 December 20: Fixed for chess.com games via download button (thanks Pierre-Louis!). 2021 July 29: Fixed for chess.com daily games and events. 2021 February 6: Fixed when launched from the chess.com analysis pages. (thanks Johannes!) 2020 November 18: Fixes for recent chess.com changes. Now works from chess.com analysis pages. 2020 September 19: Fixes for changes to urls on chess.com and chesstempo.com. 2020 September 3: Updated for new url format on chess.com (thanks mhssmnn!). 2019 December 20: Fixed after recent changes to chess.com. 2019 October 8: Fixed after recent changes to chess.com. Now works with games against the computer. 2019 April 16: Support for games from chessgames.com, chess-db.com and chesstempo.com. Improved manifest to limit permissions as much as possible. Icon now becomes enabled only when there is a valid game to analyse. Improved colour of icon so that it is clear when it is available. 2019 April 4: Fixed after live game. Avoided 'the message port closed...' error. 2019 April 3: Fixed after recent changes to Chess.com (thanks 0ddFell0w!) . Support for 'daily' games. 2018 December 8: Fixed after recent changes to Lichess import page. 2018 October 20: Fixed problem which was preventing working after live games. 2017 January 3: Fix to link after finished game. Also works from chess.com live analysis. 2016 November 30: Print-friendly PDF is now a separate Chrome extension (Lichess Print-friendly PDF). 2016 November 25: Print-friendly PDF now uses AWS lambda. 2016 November 14: Added 'Print-friendly PDF export' which has recently been removed from lichess. 2016 July 5: Fixed for recent chess.com changes. 2016 June 29: Fixed game result in lichess PDF export 2016 June 16: Fixed css name clash. 2016 June 16: Fixes for recent chess.com changes. Now works from any live game in v3 (not just your own)! 2016 June 13: Uses https in lichess.org urls. 2016 Mar 30: Improved reliability of computer analysis toggle before uploading to lichess. 2016 Mar 27: Updated to support recent changes to chess.com. Thanks to Allan Rempel who created a similar plugin for chess.com v2. Icon CC-BY-SA 3.0, CBurnett (https://en.wikipedia.org/wiki/User:Cburnett) with adjustments by AntonSusi (https://commons.wikimedia.org/wiki/User:Antonsusi).
LiChess Tools, by Siderite
Turbocharge lichess.org with a ton of features This extension adds a lot of extra functionality to the https://lichess.org web site. - Extended Interactive Lessons allow you to play ALL variations - Explorer Practice allows you to play against the moves in Opening Explorer, essentially helping you train against any rating bracket on the Internet or a specific opponent - local computer analysis chart when no server one exists, even when not logged in - Enhanced PGN Import in Analysis board allows you to merge multiple PGNs into a single one (lichess limitations strip down the comments, but I am working on a solution). This helps you quickly collect a player's repertoire and maybe save it as a study Interactive Lesson, simulating their play. Then you can export the current analysis moves into separate lines as well, or just copy a single branch as a PGN. - See evaluation of possible moves of the selected piece in analysis - Automatic detection of interesting/brilliant/good/best moves - a PGN editor supporting a lot of operations and accepting tens of megabytes of text - Mobile device features (for browsers that support extensions on mobile, like Kiwi), including drawing arrows and circles on mobile, scroll/zoom lock while playing, etc. - Change the friends box into a menu or a button, live update Friends page, - Sound and voice notifications where players you follow start playing (with mutable option per player) - TV enhancements: Current games section for players you follow and streamers, menu to go to previously opened games, previous two games in player TV just like in category TV - Ctrl-right/left to play a random move from the available ones in the list. This also works for moves coming from transposing positions - Extra context menus for Analysis/Study move list. One allows you to copy the current branch as a PGN. Another will use add comments with the computer evaluation to the terminating moves in all branches - Show player country flags and game opening names - Custom piece sets, sound themes and board images There are many more. Here is a comprehensive list, in the order of implementation: - randomly play one of the next moves with Ctrl-RightArrow - configurable probability to play a move by putting prc: in the move comment, where number is a percentage between 1 and 100 - highlights for the last move of variations in the analysis/study board - also showing which of the last moves that have not ended in mate have no comment - highlights the transpositions to the current move in the analysis/study board - also an option to show all transpositions in the PGN - play multiple variations in Interactive lesson mode in the same chapter! (using the prc: notations if present) - automatically open/hide/convert to menu the Friends box at page load - sound alert when one of your friends starts playing a game (for various time controls) - changing the shortcut for playing the next best computer move from Space to Ctrl-Space - a minimum chess engine level (if it is idle in a lower state, it runs until it gets to that level) - sticky Interactive lesson Preview mode (remains in Preview when switching between chapters) - use keyboard shortcuts (i, m, b, Alt-i, Alt-m, Alt-b) for inaccuracies, mistakes and blunders in analysis - show player country flags next to their names (if they have their country specified in the profile) - import multiple PGNs in analysis mode and merge them into one - show the order of arrows and circles in analysis/study - add an item in the Watch menu to go to last watched game (and from there to the previously watched game and so on) - show opening name in TV game and mini games - opening explorer button to quickly switch between you and the selected user - show history section (last two games) for user TV - copy branches from analysis/study to clipboard - TV games have a link to the game in the title and can be bookmarked during the game - languages supported: English, Romanian - extension options in the Preferences menu in LiChess - next moves from transpositions are now available in the analysis move list - study move list context menu item to automatically go to the last move of every variation and add a comment with the computer evaluation - option to save preferences in incognito mode, too (you have to set it from Preferences first!) - buttons to change chapter names from the Event or Black/White PGN tags in the chapter edit form - custom styles for study comments - study chapter navigation controls (including random chapter) - auto save and button to reload PGNs in Analysis mode (recover from accidental reloads) - enhanced Friends list now shows live online status and TV links, plus allows the option to "mute" playing alerts for each player - hide score tally crosstable during play - select move from variations, computer list or explorer by pressing . (dot), Ctrl-. and Shift-. respectively, then a digit key - global enable/disable extension switch - for the currently selected chapter, the ability to selectively remove just the comments, glyphs or drawn shapes - mobile device settings (use Kiwi browser on mobiles, it allows extensions) - custom user CSS themes (you can create PRs for them or ask me to include them, but you are maintaining them!) - delete all PGN tags in bulk or pick individual ones from the current chapter - practice with Explorer (computer makes moves based on what masters, lichess or a specific player played in that position) - additional glyphs on board - drawing of arrows and circles on mobile (for analysis, study, games, puzzles, TV) - collapsable preference categories - extra computer analysis metrics on charts and eval gauge - the many preferences now can be filtered by advanced or basic and the categories can be collapsed - a friends tab in the Current Games section, to see just the games of the people you follow - a menu entry to go directly to the last visited study - notification on unread timeline posts and comments from the blogs, forums or people you follow - showing evaluation on Explorer moves from local computer analysis/lichess/chessdb/winning stats - scroll lock on mobiles while playing - finding interesting moves and allowing cycling through interesting/good/brilliant moves just like with blunders - quiet mode on all tabs and manual button for setting quiet mode - explorer gambits shows which move to make to play a gambit - persist last study settings when creating new studies - button to create chapter after the selected one - PGN textarea in studies, similar to Analysis - Move list options: indented variations shows all variations as tree branches, not inline - Move list options: bookmarks allows tagging variations with a label, collapse/expand them, link to them, split chapter by them, open another window with just the analysis tools (move list, explorer, computer eval) - Option to not see cloud values in computer evaluation - Context menu on bookmarked positions to get the URL of the position - Move list options: Expanded move list and Hide left side in Analysis - a streamers tab in the Current Games section, to see just the games of streamers - search Wiki in analysis by position, not move order - practice with whatever computer engine you selected, ignoring cloud and with your specific custom engine level - TV options: - show history section (last two games) for user TV - TV games have a link to the game in the title and can be bookmarked during the game - a friends tab in the Current Games section, to see just the games of the people you follow - a streamers tab in the Current Games section, to see just the games of streamers - show pawn structures in analysis, TV games and mini-games - save different Explorer settings and toggle between them - click on Explorer sum row to get a random move, weighted on move probabilities - custom mini-game size - play again from where you entered Preview mode in Interactive Lessons and collapsible Interactive Lesson chapter controls - use Stockfish on Brave browser - learn from your mistakes in Study chapters - pin studies and broadcasts to home page - community forum - PGN editor (merge, split, normalize, count, search) - play lag chart - freeze board in analysis - download all studies of a player - larger coordinates, outside coordinates in Analysis - Profile date interval label and detailed Puzzle statistics tab - #readgame URL to read games in analysis/study - restore position in the move list in study chapters on page refresh - move assistant shows evaluation on selected piece destinations - warning when playing against a suspicious opponent (disconnect rate) - better board image export - board editor mirror position button - more decimals in computer eval - unselect piece after a few seconds - study flairs - hide/show lobby page elements - Explorer resize - Custom sound options (just disable move sounds, keep the rest) - Back to current position in correspondence - Hide chat during play - Broadcast OBS support - Hide header shortcut - Next move behavior for variations (like Chessbase) - Save blog while editing it - Option to switch to Analysis when your game ends - Screen not locking when watching TV - Active tab icon - Fast interactive lesson moves - Paste images in chat/forum - URL/image detection and unlimited text size in the team/study chat - one click moves (in Analysis/Study) - show common teams of you and your opponent - expand variations that are collapsed by default - popup video support in studies - team chat message notifications - daily chess quote - copy puzzle PGN - game list options: filters, selection, open directly in analysis - link to current Analysis board - show player rating deviation - game custom time alerts - persist last blog view - puzzle timer - show puzzle total points per session - extra piece sets - a followers page - quick actions: flip board, request server analysis, chat emojis, toggle comment reading - started puzzle history - bot list filters - color computer engine evaluations - read move comments aloud - reorder variations - study subchapters - quick report and block option - position info context menu - local evaluation persistent cache - bulk delete of imported games - K-MAPS analysis of the position - show latest games in challenge menu - custom chat buttons when playing - estimate rating based on game accuracy - bulk removal of imported games - show latest 5 challenges when no active ones - random challenge button - improved best move arrow - evaluate all branch moves - highlight next moves in Explorer - Ctrl-C to copy current position - extra lobby counters - sortable and expandable study topics - Bulk edit study chapter PGN tags - Quick LiChess Tools toggle in the user menu - Auto whisper and prepend move buttons in game chat - Find position in puzzles (and puzzles from your games) - Download local engine analysis - commands! type /help to get a list URLs: - extension page: https://siderite.dev/LiChessTools/ - GitHub page: https://github.com/Siderite/lichessTools I am taking suggestions for other features, bug reports, styling help or any other kind. Please rate, review and spread the word!
Chess.com Keyboard
This browser extension allows you to make moves on Chess.com using your keyboard Make moves with keyboard on Chess.com website! This way of moving pieces may enhance your board vision skills; it can also be used to improve chess.com interface accessibility. Two formats are supported now: algebraic (Nf3, 0-0) and UCI (e2e4 or e7e8q) ☕ If you like the extension you can buy a coffee for the author here: https://buymeacoff.ee/everyonesdesign 6.6.0 - Reworked movement parsing engine - using custom logic instead of RegExps now. Just as fast and more flexible for future improvements! 6.5.0 - New daily chess commands: "confirm" and "cancel" - Only relevant commands for the view are shown now - Internal optimisations - Dependencies are updated 6.4.0 - Update component chessboard selectors (adapts the extension to new Chess.com's changes) - Update dependencies 6.3.1 - Clean up input after moves with component board - Dependencies updates 6.2.0 - Improve conflicts resolution between pawns and bishops 6.1.1 - Fix area highlighting for component chessboard 6.0.0 - Allow lower-case algebraic moves (thanks @sehe for the contributions) - Migrate the extension to manifest v3 - Rewrite moves parsing core (parsers can return more than 1 move). This change allows to handle moves more intelligently in difficult cases 5.5.2 - Fix puzzle solution check when promotion is the last move 5.5.0 - Persist "blindfold" mode state between page reloads - Prevent submitting promotion moves without promotion piece type (fixes some issues with promotion) - Clean up unused pieces of code - Update dependencies 5.4.0 - Fix the extension for newer version of chess.com (canvas board) - Fix the functionality when the board is flipped - Automatically submit move in daily chess - Fix issues with highlights not cleaning up sometimes - Fix move clearing on Esc press 5.3.1 - Fix the functionality for some users (due to new canvas element usage on chess.com) - Allow players to make a move in analysis mode 5.3.0 - UCI support - Fix arrows and squares drawing on Play (BETA) page 5.2.0 - Fix an issue with initialization when Chess.com locale isn't supported - Dependencies updated - Minor refactoring 5.1.0 - Trying to fix "live" chess for some users 5.0.0 - Migrate to TypeScript - Add technical possibility to localize interface - Add Russian translation - Support yet another type of beta Chess.com chessboard ('chess-board' component) - Fixed some rendering issues (fix positioning of ambiguous moves highlighting) on Live board - Update some package dependencies to make sure the app doesn't have vulnerabilities 4.0.0 (and you thought Christmas was over 🎅) - Fix promotion on Vue.js chessboards (e.g. live chess or analysis board) - Allow making move for your opponent when you're analyzing games - Remove GA (to comply with Firefox add-on store) 3.1.0 - Fix Ctrl-peeking for Blindfold mode - Optimize beta chessboard arrows re-rendering 3.0.0 - Support for beta chessboard 2.0.0 (big release 🎉) - Blindfold mode for fun and for learning! - Commands support (draw and resign) - Init on lessons pages - Fix init for live app in some cases 1.5.1 - Fix width issue on layout with sidebar 1.5.0 - Prevent castling for your opponents 😜 - Fix promotion syntax in live chess 1.4.0 - Squares highlighting set by right mouse clicks are preserved - Fix bug with extension preventing pieces dragging - Ignore "C" shortcut if any modifier key is pressed (e.g. for copying) - Optimize arrows and squares painting method - A11y: create label for the input - A11y: add aria-hidden attribute to chessboard element 1.3.0 - Support algebraic notation for promotions (e.g. d8=N) - Enable extension on analysis boards 1.2.0 - Fixed a bug "it is possible to make moves for the opponent" (Yes, you could do it! Now it's over, rules are rules 🤓) - Clear input on valid move submit only - Clear ambiguous moves even if the move was made by mouse - Update app styles to make the field more stylish and readable - Fix a bug with notification falling behind the menu - Redraw arrows not only on field change, but also after opponent makes his move 1.1.0 - Highlight pieces on ambiguous moves - Focus on start of the extension - Create a way to focus the field from keyboard - Enable extension on Tactics chessboard 0.0.3 - Updating manifest to fix the icon - Fix plugin appearance on live app page - Clear input on Escape key
Chess Compass - Free Online Chess Analysis
Analyze games using Chess Compass from popular chess websites such as chess.com and lichess. Allows for easy importing of games on Lichess and Chess.com into Chess Compass.
