HTTP Header Spy
Developer Tools
Shows HTTP headers and site IP for current page
Users
608
Rating
5.0
Reviews
1
7D Growth
+7|1.16%
Cooling signalNo paid features detectedMedium-risk permissions
HTTP Header Checker - cmlabs SEO Tools
This tool helps you inspect and analyze the headers of HTTP requests and responses exchanged between client and server.
Users290Current public install base
Rating5.0Store average score
Reviews5Public review volume
Manifest versionV3Extension platform version
7-day growth-16Net users gained this week
7-day growth rate-5.23%Relative weekly velocity
Preview
6 assetsHTTP Header Checker - cmlabs SEO Tools Media preview
Trend
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User Growth Over Time
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7-day rating trend
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7-day rating change
Start
5.00
Latest
5.00
7-day rating change
0.00
2026年7月16日2026年7月22日
Growth overview
Daily, weekly, and monthly growth
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1-day growthFlat
00%7-day growthDeclining
-16-5.23%30-day growthDeclining
-18-5.84%Technical snapshot
Version, languages, and crawl freshness
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Version1.0.1
ManifestV3
Size3.55MiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
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The HTTP Header Checker is a tool designed to inspect and analyze the headers of Hypertext Transfer Protocol (HTTP) requests as well as responses exchanged between client and server.
This tool is one of the most essential components containing important metadata and instructions that oversee how data is transmitted and processed. When we are speaking about cybersecurity, this tool stands as the first line of defense to protect particular websites from potential threats. Download and try now!
Features & Benefits
The HTTP Header Checker by cmlabs offers a range of valuable advantages that contribute to enhanced security, optimized performance, and streamlined development within the digital landscape.
- This tool is available for free.
- Performance Optimization: This tool is designed to fine-tune performance for optimal user experience. It analyzes headers to control caching mechanisms, compression settings, and content delivery strategies, which is incredibly important if you want seamless and responsive browsing.
Reviews
Recent review snapshot
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Store average score5.0Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average5.0Average computed only from synced review bodies below
Reviews with text5Synced review bodies
Total ratings / reviews5Chrome Web Store public rating/review count
Store average score: 5.0. 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.
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Very Helpfull!! The tool is straightforward and easy to use!
Very Helpful!! This tool makes it incredibly easy for me to analyze and inspect headers of a website directly. SEO practitioners who need to understand how a server responds to requests.
This tool is a lifesaver for website owners! Super easy to use, even if you're not tech-savvy. You just enter your website address and it shows you clear results. I highly recommend this free tool!!
The UI is simple, very easy to understand. The checking process is also quite fast. Overall, this extension is very helpful in improving website performance and security.
Tried the HTTP header checker from Cmlabs and it turned out to be really good. Tools like this are really easy to use. The UI is also simple. The header checking process is also fast. The best thing is, this can help optimize website performance and increase security by detecting vulnerabilities in the HTTP header. In essence, if you are looking for website performance and security, try this tool first