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CSP Evaluator icon

CSP Evaluator

CSP Evaluator is a tool that allows developers to check if a Content Security Policy (CSP) serves as mitigation against XSS attacks.

Users20KCurrent public install base
Rating3.1Store average score
Reviews34Public review volume
Manifest versionV3Extension platform version
7-day growth-10KNet users gained this week
7-day growth rate-33.3%Relative weekly velocity
Preview

CSP Evaluator Media preview

2 assets
Trend

User growth trend

Review user movement across collected snapshots.

User Growth Over Time

19K22K25K28K31K2026年7月13日2026年7月16日2026年7月19日Latest: 20K
Rating trend

7-day rating trend

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7-day rating change

Start
3.09
Latest
3.09
7-day rating change
0.00
2.993.043.093.143.192026年7月13日2026年7月16日2026年7月19日Latest: 3.09
2026年7月13日2026年7月19日
Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthDeclining
-10K-33.3%
7-day growthDeclining
-10K-33.3%
30-day growthDeclining
-10K-33.3%
Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version0.3.3
ManifestV3
Size296KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

Review the store description, core capabilities, and common use cases.

CSP Evaluator is a small tool that allows developers and security experts to check if a Content Security Policy (CSP) serves as a strong mitigation against cross-site scripting attacks. Reviewing CSP policies is usually a very manual process and most developers are not aware of CSP bypasses.

CSP Evaluator checks are based on a large-scale empirical study and are aimed to help developers to harden their CSP. This tool is provided only for the convenience of developers and Google provides no guarantees or warranties for this tool.

Reviews

Recent review snapshot

Inspect the latest comments and rating distribution.

Store average score3.1Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average2.7Average computed only from synced review bodies below
Reviews with text26Synced review bodies
Total ratings / reviews34Chrome Web Store public rating/review count

Store average score: 3.1. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5
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4
3
3
1
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0
1
14
Ivan Augusto2026年6月23日
3

For people facing the "No Content Security Policy found." issue - reinstall the install, it'll work again.

Version 0.3.3Language en
1 helpful · 0 not helpful
Stefan Mölleken2026年5月15日
1

Das Addon funktioniert (leider) aktuell nicht mehr.

Version 0.3.3Language de
Dominik Feiler2025年12月10日
5

If you also have the issue of always seeing "No Content Security Policy found" (despire CSP being configured according to the Headers): Re-Install the extension, that will fix it.

Version 0.3.3Language en
3 helpful · 0 not helpful
Nicolas Zulaica2025年6月27日
1

In every page i tried it it said: "No Content Security Policy found". And yes, these pages had CSP configured.

Version 0.3.3Language en
14 helpful · 0 not helpful
Dave Aspinall2025年3月20日
5

Works great!

Version 0.3.2Language en
Goktug Erol2025年1月23日
5

It works just fine.

Version 0.3.2Language en
Evan Tirta2024年11月14日
1

extension stopped working :(

Version 0.3.2Language en
4 helpful · 0 not helpful
Kirk Solar2024年11月4日
5

This extension stopped working for me in the past couple months in the Brave browser. I recently disabled, removed, and reinstalled and it's working again. For those who are having trouble with it working, give the reinstall a try.

Version 0.3.2Language en
4 helpful · 0 not helpful
Josh Barber2024年9月13日
1

Was great until it stopped working for me. Please fix and I'll change my rating

Version 0.3.2Language en
2 helpful · 0 not helpful
Paulo Lima2024年9月12日
1

I this thing stopped working :/

Version 0.3.2Language en
4 helpful · 0 not helpful