Firefox Add-ons

17Versions

0Code reviewed

Not reviewed

No code review on record

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17 indicators in this extension

17 indicators

0 versions analysed

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What our analysis found

Chess.com Custom Themes, Boards - ChessHelper is not yet reviewed by Extension Auditor. It comes from a trusted publisher and was last updated in January 2026.

Chess.com Custom Themes, Boards - ChessHelper Firefox extension security report

ID: chesshelper

Extension Info & Metadata

Status

Active

Version

3.1.0

Size

23.64 MB

Rating

4.3/5

Reviews

Users

262

Type

Extension

Updated

Jan 27, 2026

Publisher Contextual Analysis

Trusted

Author: fullstackdev
Privacy: Privacy Policy
Country: PL
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes
Address: Adama Ciołkosza Warszawa 03-134 PL
Website: Visit

Extensions

Active

Obsolete

Listed

Unlisted

Users

15,354

Screenshots & videos

Install growth

User Growth

Showing data from Oct 19, 2023 to Oct 18, 2024

Versions

+4.76%(+12 users)

Compared to 3 months ago

13 versions released in this period

Rating Count

Total: 11 ratings

Average Rating

Current: 4.82 / 5.0+4.82

See plans

React Flow

Internal permhash`49a25f9fee…`
Too common to be evidence

42,796 other extensions carry this fingerprint, 5,268 of them known malicious. A permission set this common is not evidence on its own; the most installed members are listed for reference.

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+42,789 more

Permhash (Mandiant)`49a25f9fee…`
Too common to be evidence

72,711 other extensions carry this fingerprint, 7,256 of them known malicious. A permission set this common is not evidence on its own; the most installed members are listed for reference.

Withheldmalicious
Withheldmalicious
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Withheldmalicious
Withheldmalicious
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+72,704 more

Network indicators

17 URLs and 0 IP literals were extracted from this version.

Item	Type	Severity	Description
Contextual Risk Factors	Risk Factor	High	The following context increases the overall risk:• 10% increase: Early script execution enables pre-emptive content manipulation• 15% increase: Older manifest version lacks modern security controls
storage	Permission	Medium	This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
Early Content Script Execution	Risk Factor	Medium	This extension runs content scripts at document_start.
Older Manifest Version	Risk Factor	Medium	This extension uses Manifest Version 2

17 indicators in this extension

17 indicators

0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

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About this extension

2025 Setup new themes, pieces, fonts, and boards, remove annoying notifications, popups, and many more.

Read the publisher’s full description

Features: - Custom Themes: Change the look of <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/94f4992ed19757c38122b7e0a3d13ae5d5ffaa8e0db6e4242f4e618b72fdc1bd/http%3A//Chess.com" rel="nofollow">Chess.com</a> with the new themes (x6), pieces(x39), and boards(x40). - Notification Control: Say goodbye to annoying popups & notifications. - Fullscreen & Fixed Mode: Enjoy chess in fullscreen mode and with a fixed board layout. No more page jumping & scrolling in HyperBullet! - Font Customization: Tailor the font to your liking. - Bandwidth Saver: Reduce bandwidth usage by disabling the stream on the main page. - Disable Chat: No more trolls! - Coordinates on each square: Learn notation faster. It works! - Double Click Resign: Simple, and less frustrating. Especially on Bullet. --- Note: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/94f4992ed19757c38122b7e0a3d13ae5d5ffaa8e0db6e4242f4e618b72fdc1bd/http%3A//Chess.com" rel="nofollow">Chess.com</a> is a registered trademark of <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/94f4992ed19757c38122b7e0a3d13ae5d5ffaa8e0db6e4242f4e618b72fdc1bd/http%3A//Chess.com" rel="nofollow">Chess.com</a>, LLC. This extension is not affiliated with or endorsed by <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/94f4992ed19757c38122b7e0a3d13ae5d5ffaa8e0db6e4242f4e618b72fdc1bd/http%3A//Chess.com" rel="nofollow">Chess.com</a>, LLC.

User reviews

3.8 out of 5 · 9 most recent reviews

Text reviews

Positive

Negative

Cool customization features, but it would be cool to upload custom made pieces and use them, I have made a 32x32 pixel art version of the neo chess set and I would love to play with it

SonicDelta·26 Feb 2026

Super bummed out. I would have genuinely given this extension 5 stars for the past 6 or so months that I have been using it, except that for some reason recently it has started to display a popup every 5 mins asking for money with no way to disable it or anything. So I guess I am goin to uninstall it. Dang shame too, cuz I legit like this ext., I get on chess.com every day so this ext. is the only one on my browser that I use every day so it's a bummer, but I hate popups, especially one that relentlessly keeps appearing every couple of mins begging for money. I don't know if there was an update or what, but it never did this until like today. Better fix it dev or there's a chance you're gonna end up driving a bunch of current users or potential users away.

ElGregTheGringo·28 Jan 2026

Extension files

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URLs

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No URLs found

No IP addresses found

17 indicators in this extension

17 indicators

0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

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One-time payment · Secure checkout by Stripe

Version	Size	Verdict	Findings	Permhash
1.0.0 Latest	34.08 MB	Not scanned	—	49a25f9feefaffecad0fcd30c50dc9331cff8b55ece53def6285c09e17e6f5d7
1.0.1	34.08 MB	Not scanned	—	49a25f9feefaffecad0fcd30c50dc9331cff8b55ece53def6285c09e17e6f5d7
1.0.2	29.60 MB	Not scanned	—	49a25f9feefaffecad0fcd30c50dc9331cff8b55ece53def6285c09e17e6f5d7
1.0.3	31.26 MB	Not scanned	—	49a25f9feefaffecad0fcd30c50dc9331cff8b55ece53def6285c09e17e6f5d7
1.0.4	31.28 MB	Not scanned	—	49a25f9feefaffecad0fcd30c50dc9331cff8b55ece53def6285c09e17e6f5d7
1.1.0	21.15 MB	Not scanned	—	49a25f9feefaffecad0fcd30c50dc9331cff8b55ece53def6285c09e17e6f5d7
1.1.0.6	21.15 MB	Not scanned	—	49a25f9feefaffecad0fcd30c50dc9331cff8b55ece53def6285c09e17e6f5d7
1.1.4	21.33 MB	Not scanned	—	49a25f9feefaffecad0fcd30c50dc9331cff8b55ece53def6285c09e17e6f5d7
1.1.4.1	21.33 MB	Not scanned	—	49a25f9feefaffecad0fcd30c50dc9331cff8b55ece53def6285c09e17e6f5d7
1.1.4.2	21.33 MB	Not scanned	—	49a25f9feefaffecad0fcd30c50dc9331cff8b55ece53def6285c09e17e6f5d7

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Code Diff

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Not reviewed

17 indicators in this extension

What our analysis found