Who should use Chess Utils?

Chess Utils is a consumer product built for chess.com and Lichess players.

Does Chess Utils have a free plan?

Yes — Chess Utils is free to use.

What platforms does Chess Utils run on?

Chess Utils runs on the web and embeddable surfaces.

Is Chess Utils still active?

Unverified. Chess Utils has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to Chess Utils?

Similar projects tracked by PulseGate include Chess Helper, Chess, and Chesscheat.

Who develops Chess Utils?

Chess Utils is developed by mtw.

How long has Chess Utils been around?

Chess Utils first shipped in 2025.

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Chess Utils

Name: Chess Utils
Author: mtw

mozilla.orgBrowser DevTools & extensions

Chess Utils is a Firefox browser extension for chess.com players. It adds a Lichess analysis button, game and position copying shortcuts, selected-piece highlighting, knight arrows, custom piece sets, and limited ad hiding.

FreeWebEmbeddable

Visit mozilla.org

Overview

8 features

Chess Utils is a Browser DevTools & extensions project. It focuses on improving chess.com game analysis and board interaction with quicker access to Lichess, copying tools, highlights, and shortcuts. Chess Utils is a consumer product aimed at chess.com and Lichess players. Chess Utils is free to use. It runs on the web and embeddable surfaces.

mtw builds and maintains Chess Utils, and it first shipped in 2025. Among its 8 catalogued features are Lichess Analysis Button, Game Copying, and Position Copying. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Lichess Analysis Button
Game Copying
Position Copying
Piece Highlighting
Knight Arrows
Custom Piece Sets
Ad Hiding
Keyboard Shortcuts

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed20 Sep · 00:09 UTC
Chess Utils verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Chess Utils

What does Chess Utils do?: Chess Utils focuses on improving chess.com game analysis and board interaction with quicker access to Lichess, copying tools, highlights, and shortcuts. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Chess Utils?: Chess Utils is a consumer product built for chess.com and Lichess players.
Does Chess Utils have a free plan?: Yes — Chess Utils is free to use.
What platforms does Chess Utils run on?: Chess Utils runs on the web and embeddable surfaces.
Is Chess Utils still active?: Unverified. Chess Utils has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to Chess Utils?: Similar projects tracked by PulseGate include Chess Helper, Chess, and Chesscheat.Chess Helper Chess Chesscheat
Who develops Chess Utils?: Chess Utils is developed by mtw.
How long has Chess Utils been around?: Chess Utils first shipped in 2025.

At a glance

Pricing: Free
Platforms: Web
Built for: Chess.com and Lichess players
Model: B2C
Solves: Improving chess.com game analysis and board interaction with quicker access to Lichess, copying tools, highlights, and shortcuts.

Registered as

Firefox Add-ons: chess-utils

Developer

mtw

Index record

Indexed: 20 Sep 2026
Lifecycle: Alive
Last seen: 20 Sep 2026

Identity audit (13)

Slug: chess-utils-mozilla-org
Lifecycle state recorded: 20 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 20 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 20 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/chess-utils

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