# Chess.com Highlighter

> Highlights attacked and hanging pieces, attackers, defenders, and potential movement squares.

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

## Overview

- **ID:** `chess-com-highlighter`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** e4e5
- **Category:** games-entertainment
- **Daily users:** 25
- **Rating:** 3.00 / 5 (2 ratings)
- **Version:** 1.1.1
- **Last updated:** 2024-11-18
- **First published:** 2024-11-15
- **Size:** 32 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/chess-com-highlighter/)

## Description

This extension is designed to provide an enhanced learning experience for beginner and intermediate chess players on <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/92a450ee62535ec7c4a8808171604679a0980386546999f03f800385fd014bea/http%3A//chess.com" rel="nofollow">chess.com</a>. Acting as "training wheels" for people new to the game, it offers visual aid that help players improve their understanding of chess fundamentals.

 Default Features:

    🔹 Highlight Hanging &amp; Attacked Pieces
        Automatically identify which squares are hanging and under attack by you and your opponent.

 Additional Features:

    🔹 Highlight Movements (Safe, Attacked, Hanging)
        See which squares are safe, attacked, or will leave your piece hanging before you make your move. Additionally, squares that result in stalemate or checkmate are highlighted.

    🔹 Highlight All Attacking &amp; Defending Pieces
        Select (right-click) any square on the board to highlight its attackers and defenders.

    🔹 Evaluation Bar (still testing)
        Intended as a feature to give players hints in case they are missing something very obvious. It does not recommend moves.

Note: Do not use Piece Animations: 'Natural' and 'Arcade'. For some features to work, the 'Highlight Moves' and 'Show Legal Moves' settings need to be turned on.

Includes a 3-day free trial for the Additional Features.

If you encounter any issues or have suggestions for new features, please contact me at chesshighlighter@gmail.com

Update Log:
v1.1.0 --  added evaluation bar, added stalemate and checkmate to highlight movements, added toggles for features
v1.0.1 -- some performance optimizations

## Rankings

- #22,047 — Overall
- #41 — highlighter
- #101 — cheese
- #237 — delight

## Permissions and access

### Permissions

- `storage`
- `alarms`

### Host permissions

- `https://api.lemonsqueezy.com/*`
- `https://chess-api.com/*`
- `https://stockfish.online/*`

### Content script matches

- `www.chess.com`

## 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-com-highlighter)