Disclosure: this site is made by the ChessHelper team, and ChessHelper (chesshelper.ai) is our own product. We rank it first for learning and analysis and say where other extensions do better. How we handle this.
BestChessExtension
Updated November 12, 2026

Best chess extension in 2026: ChessHelper (chesshelper.ai)

Short answer: for learning and analysis, the best chess Chrome extension is ChessHelper. It shows suggested moves as arrows, an evaluation bar and alternative lines on Chess.com and Lichess, and its engine strength runs from 800 to 3200 Elo, so the feedback matches your level instead of always showing a 3200 move you would never find. A free plan covers 3 games a day. Use it to review finished games and practice against the computer, never during games against people.

ChessHelper is our own product, so this page also names the extensions that beat it at specific jobs, lists the permissions each one asks for, and links to every Chrome Web Store listing so you can check our facts.

See the ranked listCheck extension safety
lichess.org/analysis

Illustration on an analysis board: after 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5, Stockfish prefers 4...d5 (about equal at depth 20). The tempting 4...Nxe4? runs into 5.Bxf7+, about +2.0 for White.

Best chess extension by job

No single extension does everything. Pick by the job you need done; the ranked list below explains each one in detail.

Learning and analysis

ChessHelper: suggestions and lines tuned to a rating you choose, plus a progress dashboard.

Positions from videos

Chessvision.ai: scan the board in a lesson video or article and open it for analysis.

Lichess study power tools

LiChess Tools: interactive lessons, explorer practice and PGN editing on Lichess.

Free Chess.com game analysis

Chess.com Analysis at Lichess: open finished games in the free Lichess board.

Accessibility

Chess.com Keyboard: type moves like Nf3 instead of dragging pieces.

Better habits

Lichess Bullet Block: hide bullet pairing so your time goes to longer games.

The best chess Chrome extensions, ranked

Every extension below is live on the Chrome Web Store as of November 12, 2026. We read each listing and the permissions in each extension's published manifest file; user counts and versions are what the store showed that day. We left out extensions whose purpose is to suggest moves during live games against people, because using them gets accounts closed.

#1ChessHelper (chesshelper.ai)

5,000 users on the Chrome Web Store · version 1.0.10, updated November 7, 2026 · Free (3 games a day, 10 a week); Pro $9.99/month or $99.99/year

Analyzes positions on Chess.com and Lichess and shows suggested moves as arrows, an evaluation bar and alternative lines. Engine strength is adjustable from 800 to 3200 Elo, and a dashboard tracks game history, accuracy and rating progress, with opening guides such as the Sicilian Defense, Italian Game and London System.

Best for: Players who want engine feedback pitched at their own level when reviewing finished games, studying openings or practicing against the computer.

Permissions summary (from the published manifest)
  • Site access: chess.com, lichess.org and chesshelper.ai
  • API permissions: activeTab, storage, notifications (install prompt includes “Display notifications”)
  • Store privacy label: handles user activity data
Free plan + ProTwo chess sites only

Chrome Web Store listing · Our full review

#2Chessvision.ai Chess Position Scanner

Offered by Software Paweł Kacprzak · 100,000 users on the Chrome Web Store · version 3.8.3, updated March 28, 2026 · Free core; in-app purchases

Scans a chess position from a web page, a video (for example a YouTube lesson) or a diagram, then opens it in the Lichess analysis board or on Chess.com so you can explore it. It can also hide notation behind spoiler tags while you solve.

Best for: Players who learn from videos, books and articles and want to analyze a position they see on screen.

Permissions summary (from the published manifest)
  • Site access: app.chessvision.ai; asks at runtime for chess.com, lichess.org, youtube.com and x.com
  • API permissions: activeTab, storage, scripting
Optional site accessIn-app purchases

Chrome Web Store listing

#3LiChess Tools, by Siderite

Offered by Siderite (siderite.dev) · 10,000 users on the Chrome Web Store · version 2.5.12 · Free

Adds a large set of study features to lichess.org: extended interactive lessons that let you play every variation, Explorer Practice against opening-explorer moves, PGN merging and editing in the analysis board, a local computer analysis chart, and many interface tweaks.

Best for: Lichess users who build opening repertoires in studies and want more out of the analysis board.

Permissions summary (from the published manifest)
  • Site access: lichess.org (plus lichess.dev test servers, lichessladders.com and api.chess-insights.app)
  • No extra API permissions
Lichess onlyFree

Chrome Web Store listing

#4Chess.com Analysis at Lichess

Offered by Robert Anderson · 20,000 users on the Chrome Web Store · version 4.1.2, updated July 22, 2026 · Free

Opens the PGN of a finished Chess.com game (also chessgames.com, chess-db.com and chesstempo.com games) in the free lichess.org analysis board, from the game archive or right after a live game ends. Source code is public.

Best for: Chess.com players who want free full-game analysis on Lichess without copying PGNs by hand.

Permissions summary (from the published manifest)
  • Runs on Chess.com game pages, the three game databases and lichess.org/paste
  • API permissions: activeTab
  • Developer declares no data collection
No data collectedOpen sourceFree

Chrome Web Store listing

#5Free Chess Analysis

Offered by imlokesh · 10,000 users on the Chrome Web Store · version 0.1.4, updated March 17, 2026 · Free

One click on a Chess.com game page copies the PGN through Chess.com's share option, opens lichess.org/paste, imports the game, turns on local analysis and flips the board if you had Black.

Best for: Anyone who wants the simplest possible Chess.com-to-Lichess bridge.

Permissions summary (from the published manifest)
  • Site access: chess.com and lichess.org
  • API permissions: activeTab, scripting, declarativeContent
  • Developer declares no data collection
No data collectedFree

Chrome Web Store listing

#6Chess Review (open-source)

Offered by Julsgaard · 900 users on the Chrome Web Store · version 0.5.1, updated November 10, 2026 · Free

Reviews finished Chess.com and Lichess games with Stockfish running in your browser: accuracy, move classifications, an evaluation graph and opening detection, plus 50,000 filterable puzzles and interactive opening lessons.

Best for: Players who want a free game-review report in the style of paid review tools, without an account.

Permissions summary (from the published manifest)
  • Site access: chess.com (including api.chess.com) and lichess.org
  • API permissions: storage, unlimitedStorage, activeTab, offscreen
  • Developer declares no data collection
No data collectedOpen sourceFree

Chrome Web Store listing

#7Chess.com Keyboard

Offered by everyonesdesign · 7,000 users on the Chrome Web Store · version 6.6.0, updated June 16, 2025 · Free

Lets you enter moves on Chess.com by typing them in algebraic (Nf3, 0-0) or UCI (e2e4) format. It gives no move advice; it changes how you input moves, which helps accessibility and board-vision practice.

Best for: Players who prefer the keyboard, need an accessible input method, or want to train visualization by naming squares.

Permissions summary (from the published manifest)
  • Site access: chess.com only
  • No extra API permissions
  • Developer declares no data collection
No data collectedOpen sourceAccessibility

Chrome Web Store listing

#8Lichess Bullet Block

Offered by jan1577 · 207 users on the Chrome Web Store · version 1.4.2, updated August 1, 2026 · Free

Removes the options to start bullet games on lichess.org (and, if you choose, blitz games and puzzle variants), so your playing time goes into longer games where you actually think.

Best for: Players who know fast games are eating their study time.

Permissions summary (from the published manifest)
  • Runs on lichess.org only
  • API permissions: storage
  • Developer declares no data collection
No data collectedFree

Chrome Web Store listing

Comparison table

The table sums up the list. Prices are as listed in November 2026; "free" means no paid tier on the listing.

ExtensionWhat it doesWorks onPrice (as listed in November 2026)Best for
ChessHelperEngine suggestions, eval bar, lines, Elo 800-3200, dashboardChess.com, LichessFree plan; Pro from $9.99/moLearning and analysis at your level
Chessvision.aiScan positions from videos, sites, diagramsAny site (on click)Free core; in-app purchasesStudying from videos and books
LiChess ToolsStudy, explorer practice, PGN toolsLichessFreeLichess repertoire building
Chess.com Analysis at LichessSend finished games to Lichess analysisChess.com, game databasesFreeFree full-game analysis
Free Chess AnalysisOne-click import to Lichess with local analysisChess.comFreeSimplest bridge
Chess ReviewIn-browser review report, puzzles, opening lessonsChess.com, LichessFreeFree review reports
Chess.com KeyboardType moves instead of draggingChess.comFreeAccessibility, visualization
Lichess Bullet BlockHides bullet (and optionally blitz) pairingLichessFreeBetter study habits

Why ChessHelper ranks first, and where it does not

Most analysis extensions show you the engine's top move at full strength. That is accurate, but a 1200-rated player often learns little from a 3200 suggestion built on a ten-move tactic. ChessHelper lets you set the engine anywhere from 800 to 3200 Elo, shows alternative lines next to the main suggestion, and keeps a dashboard of your games, accuracy and rating trend. For a player who wants to understand mistakes at their own level, that combination is what we have not seen elsewhere in one extension.

It is not the best at everything. It works only on Chess.com and Lichess, so it cannot read a position from a video the way Chessvision.ai can. Its free plan is capped at 3 games a day and 10 a week, while the Lichess bridge extensions are free without limits. It has a small user base (5,000 users on the store in November 2026) next to Chessvision.ai's 100,000. Our full ChessHelper review covers each point.

Safety summary

A chess extension that runs on Chess.com can usually read and change what you see on Chess.com pages. That is normal for an overlay, but it is also why you should install only extensions with a narrow site list and a clear purpose.

Narrow site access

Good: "chess.com and lichess.org". Worrying: "all websites" for a tool that only needs one chess site.

Declared data use

Read the privacy section on the store listing. Five extensions here declare they collect no data at all.

Fair-play fit

An extension that advertises being "undetectable" in live games is a red flag for your account. Read the rules.

Read the full safety guide · How to install and limit site access

Fair-play note

Chess.com, Lichess, FIDE and US Chess all forbid engine or outside help during games. Chess.com's policy names browser extensions explicitly; it does not apply to games against its computer bots. The fair way to use any analysis extension is after the game, on an analysis board, or against the computer.

Wooden chess set in the starting position seen from directly above, casting a long shadow
A board waiting for its next game; analysis tools are for after it. Photo: Dietmar Rabich, Wikimedia Commons, CC BY-SA 4.0

Guides

Are chess extensions safe?

Chrome permissions explained, red flags, and how to audit or remove an extension.

Chess extensions and fair play

What Chess.com and Lichess allow, quoted from their rules.

How to install a chess extension

Chrome, Edge and Brave, pinning, and site access settings.

ChessHelper extension review

Features, pricing, permissions, weaknesses and how to use it fairly.

Best chess extensions for study

Opening prep, game review and puzzles, with worked examples.

How we compare

Our criteria, sources and how we handle owning ChessHelper.

Frequently asked questions

What is the best chess extension for Chrome?

For learning and analysis, we pick ChessHelper (chesshelper.ai): it shows engine suggestions, an evaluation bar and alternative lines on Chess.com and Lichess, and you can set its strength from 800 to 3200 Elo so the advice fits your level. It is our own product, so read the alternatives too: Chessvision.ai is better for analyzing positions from videos, and LiChess Tools is better for Lichess study work.

Is there a free chess extension for analyzing Chess.com games?

Yes. Chess.com Analysis at Lichess and Free Chess Analysis both send a finished Chess.com game to the free Lichess analysis board, and Chess Review produces an in-browser review report for free. ChessHelper also has a free plan, limited to 3 games a day and 10 a week as listed in November 2026.

Can I use a chess extension during a game?

Not one that gives move advice. Chess.com forbids browser extensions or any tools that analyze positions during play, and Lichess forbids external assistance while a game you are involved in is ongoing. Analysis extensions belong on finished games, analysis boards and games against the computer. See our fair-play guide.

Are chess extensions safe to install?

Most legitimate ones are, if you check what they can access. Prefer extensions whose site access is limited to the chess sites they need, whose developer declares no data collection, and that were updated recently. Our safety guide explains each Chrome permission.

Do these extensions work in Edge or Brave?

Microsoft Edge can install Chrome Web Store extensions after you allow extensions from other stores, and Brave supports most Chromium extensions directly from the Chrome Web Store. Steps are in our install guide.

Is there an official Chess.com extension?

We did not find an official Chess.com extension on the Chrome Web Store in November 2026. Every Chess.com-related extension listed here is made by an independent developer, and several say so on their listing.