CSP Lab

Develop Content Security Policies (CSP) for your website

CSP Lab

Install from Chrome Web Store

Extension stats

Users: 10
4
Version: 0.1 (Last updated: 2024-11-25)
Creation date: 2024-11-25
Risk impact: High risk impact
Risk likelihood:
Manifest version: 3
Permissions:
  • declarativeNetRequestWithHostAccess
  • webNavigation
  • webRequest
  • storage
Host permissions:
  • <all_urls>
Size: 372.74K

Other platforms

Not available on Android
Not available on Firefox
Not available on Edge
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Extension summary

CSP Lab is designed to help you develop a Content Security Policy for your website.

It appears as a tab in the DevTools and it has three modes:

  1. In "Existing" mode, it will evaluate the Content Security Policies on the sites that you visit
  2. In "Suggest" mode, it will add replace any existing CSP header with a Report-Only header designed to send reports to a service that you run locally. This service will provide you with a CSP that will cover all the reported violations. This mode makes it easy to generate a starter CSP for a website that has never had one before.
  3. In "Override" mode, you can specify a CSP that will add a CSP to a site that has none, or replace the one that is there. This mode is designed for testing and tweaking your CSP before you actually deploy it to your site.

Extension safety

Risk impact

CSP Lab requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk likelihood

CSP Lab may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

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