Laboratory (Content Security Policy / CSP Toolkit) Firefox

Laboratory (Content Security Policy / CSP Toolkit)

Because good website security shouldn't only be available to mad scientists! Laboratory is a WebExtension that helps you generate a Content Security Policy (CSP) header for your website.
Laboratory (Content Security Policy / CSP Toolkit)Laboratory (Content Security Policy / CSP Toolkit)Laboratory (Content Security Policy / CSP Toolkit)
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Features & Capabilities

Laboratory is a powerful browser extension designed to help web developers generate robust Content Security Policy (CSP) headers effortlessly. By simply recording your browsing session on your website, it automatically produces a secure CSP tailored to your site’s needs. This tool simplifies the complex process of crafting effective security policies, helping protect websites from common vulnerabilities like cross-site scripting attacks.

Whether you're a beginner or an experienced developer, Laboratory equips you with essential security controls to safeguard your web content. To get the most out of Laboratory, explore the detailed video introduction by Securing DevOps that walks you through its features and best practices. Enhance your site's security with Laboratory—because good website security shouldn't be reserved for experts alone.

User Growth & Download Statistics

Manifest V2 Add-on Developer Tools Privacy & Security
By:
April King
Daily users:
1,757 -16
Rating:
4.56
(64)
Version:
3.0.8 Last updated: 2021-01-28
Version code:
5172077
Creation date:
2017-02-24
Risk:
High risk impact Low risk likelihood
Permissions:
Size:
399.15KB
Email:
ap*****@pokeinthe.io
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-07-06
Compare stats and ranking:

Ranking

# 2,334 ▼ 15
Other rankings
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Other platforms

Chrome
Laboratory (v3.0.9)
307 5.00 (1)

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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:
April King
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/laboratory-by-mozilla/
Email:
ap*****@pokeinthe.io
Website:
https://github.com/april/laboratory

User Reviews

Pros
  • Saves time and headache for users dealing with CSP issues.
  • Functions well for many users without errors.
  • Great concept for enhancing security and privacy in web browsing.
Cons
  • Can cause server errors upon enabling the extension.
  • Generates spammy fake CSP reports, which can clutter the network tab.
  • Lacks support for local files (file:/// URIs).
Recent reviews
by Fi*****, 2025-04-07
by Br*****, 2025-03-23
by *****, 2024-12-30
View all user reviews ›

Is Laboratory (Content Security Policy / CSP Toolkit) 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.

Laboratory (Content Security Policy / CSP Toolkit) requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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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.

Laboratory (Content Security Policy / CSP Toolkit) has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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