# Chess Utils

> Chess.com utilities like a button to review games on lichess, shortcuts to copy the game or position and highlighting the selected piece.

Canonical page: [https://chrome-stats.com/d/chess-utils](https://chrome-stats.com/d/chess-utils)

## Overview

- **ID:** `chess-utils`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** mtw
- **Category:** appearance,games-entertainment
- **Daily users:** 7
- **Weekly downloads:** 3
- **Version:** 0.0.14
- **Last updated:** 2026-04-01
- **First published:** 2025-03-24
- **Size:** 247 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/chess-utils/)

## 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
- shortcuts to copy current game or position (not while playing yourself)

I am not affiliated with <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/92a450ee62535ec7c4a8808171604679a0980386546999f03f800385fd014bea/http%3A//chess.com" rel="nofollow">chess.com</a> or lichess in any way. <strong>Use at your own risk.</strong>

Credits and Licenses:
- The chess pieces (simple and shaded) are adapted from the <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/86fffb506e0c3533042475dbd9714428b3b1d5213a548b6281b4aa13e58d5735/https%3A//en.wikipedia.org/wiki/User%3ACburnett/GFDL_images/Chess" rel="nofollow">chess pieces by Cburnett</a>, which are licenced under <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/19bcd4d9f38543f62751a59296b15aaa2879e8c7a7c56c4badca20cbf7a50a44/https%3A//creativecommons.org/licenses/by-sa/3.0/" rel="nofollow">CC BY-SA 3.0</a>.
- Pieces Simple and Pieces Shaded © 2025 by mtw are licensed under <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/08a6ab0bbda12214621ea2f960f5e1f3b4bf95835a40d457ca0f2afd49c0e7fa/https%3A//creativecommons.org/licenses/by-sa/4.0/" rel="nofollow">CC BY-SA 4.0</a>.
- Chess Utils is licensed under <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/6ad1bcde8f37a617f291306c58d11a77ceff18cb29c31dd7bc84f7218bdc073e/https%3A//www.gnu.org/licenses/gpl-3.0" rel="nofollow">GPLv3</a>.

## Rankings

- #39,124 — Overall
- #145 — cheese

## Permissions and access

### Permissions

- `storage`
- `scripting`

### Host permissions

- `https://www.chess.com/*`
- `https://lichess.org/*`

### Content script matches

- `www.chess.com`
- `lichess.org`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/chess-utils)