API Response Viewer
Developer Tools
Captures, formats, and displays API responses in a clean interface for easy debugging and analysis of web applications.
Users
149
Rating
1.0
Reviews
1
7D Growth
-10|-6.29%
Cooling signalNo paid features detectedHigh-risk permissions
HTTP Header Inspector - Response Headers & Status Checker
View HTTP headers, status codes, CORS & security headers without DevTools. Debug API, XHR/fetch requests instantly.
Users126Current public install base
Rating4.0Store average score
Reviews1Public review volume
Manifest versionV3Extension platform version
7-day growth-1Net users gained this week
7-day growth rate-0.79%Relative weekly velocity
Preview
1 assetsHTTP Header Inspector - Response Headers & Status Checker Media preview
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7-day rating change
Start
4.00
Latest
4.00
7-day rating change
0.00
2026年7月16日2026年7月22日
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1-day growthFlat
00%7-day growthDeclining
-1-0.79%30-day growthGrowing
+7+5.88%Technical snapshot
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Version1.0.0
ManifestV3
Size30.94KiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
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Tired of digging through DevTools every time you need to check a website's headers? The HTTP Header Inspector offers a beautifully simple and efficient solution, allowing you to view full HTTP response headers, status codes, and server details directly from your browser's toolbar.
This extension is the perfect companion for web developers, SEO analysts, and security researchers.
Use it to:
Debug API Responses: Quickly check headers to resolve issues with your APIs.
Troubleshoot CORS: Instantly see Access-Control-Allow-Origin and other CORS-related headers.
Analyze Server Configurations: Understand caching policies, server types, and more at a glance.
Reviews
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Store average score4.0Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.0Average computed only from synced review bodies below
Reviews with text1Synced review bodies
Total ratings / reviews1Chrome Web Store public rating/review count
Store average score: 4.0. 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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This is the best alternative to the HTTP Header Spy extension (no longer supported due to Manifest V3). However, I can only give it 4 out of 5 stars because it lacks a light-mode UI, which is usually the default in Chrome extensions.