CyberChef.org Firefox

CyberChef.org

The Cyber Swiss Army Knife — your pinned tools in a popup, the full app in a tab. Entirely offline.
xHeader
Modify request and response headers. No ads, no malware.

Features & Capabilities

CyberChef performs local data transformation — encoding, decoding, encryption, compression, hashing and parsing — on text the user supplies or selects.

It presents the user's saved operations in a popup or side panel and the full CyberChef application in an extension tab. All processing happens on the user's device; the extension makes no network requests.

User Growth & Download Statistics

Manifest V3 Add-on
By:
Def24 Inc.
Daily users:
72 25
Version:
0.1.4 Last updated: 2026-08-13
Version code:
6398757
Creation date:
2026-08-06
Firefox add-on GUID:
cyberchef-ext@def24.com
Firefox add-on numeric ID:
3050154
Weekly download count:
29
Firefox on Android:
No
Risk:
Moderate risk impact High risk likelihood
Permissions:
Host permissions:
  • <all_urls>
Size:
10.10MB
Email:
in*****@def24.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-09-07
Compare stats and ranking:

Other platforms

Chrome
CyberChef (v0.1.2)
559 0.00 (0)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Def24 Inc.
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/cyberchef-org/
Email:
in*****@def24.com
Website:
https://cyberchef.org

Is CyberChef.org Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

CyberChef.org requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

CyberChef.org is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
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  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
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