Why does it say my CSP is missing?
If your server does not explicitly send the Content-Security-Policy header in the response, browsers cannot block unauthorized scripts, leaving the page vulnerable to XSS.
HTTP Request & Response Headers Inspector — Network Diagnostic
Parse and inspect raw HTTP request and response headers • Analyze caching directives and security policies
Sys Status: Active[Network & Performance]
/bin/wtkpro/http-headers-inspector
HTTP Response Header Inspector
System Definition BlockParse, inspect, and audit raw HTTP headers. Extract security policies, cache rules, CORS configurations, and cookies instantly inside your browser.
• Verified•Protocol: 2026-STABLE
Enterprise-Grade Security Guarantee
WebToolkit Pro is engineered for zero-trust environments. This utility processes your sensitive data entirely within your browser using Web Workers.
Zero server transmission
End-to-end client-side execution
01
How HTTP Request & Response Headers Inspector Works
The inspector parses standard HTTP header syntax, splitting strings by newlines and colons, and compares directives against modern security standards to generate compliance ratings.
02
Key Features of HTTP Request & Response Headers Inspector
Real-time parsing of raw response copy-pastes
Flagging checks for security headers (HSTS, CSP, XSS protection)
Decodes Cookie arrays and custom browser parameters
100% free and runs locally in your browser memory
03
Practical Application & Code Integration
Use-Case Context
Inspecting HTTP response headers is crucial for debugging caching issues (like stale Cloudflare responses) and verifying security policies. For example, ensuring `X-Frame-Options: DENY` is present protects against Clickjacking attacks, while checking `Strict-Transport-Security` guarantees HSTS enforcement.
cURL Header Inspection
# Fetch only the HTTP headers without the response body
curl -I -L https://wtkpro.site
# Example Output:
# HTTP/2 200
# cache-control: s-maxage=31536000, stale-while-revalidate03
Common Questions About HTTP Request & Response Headers Inspector
Does this tool proxy my requests?
No. The tool parses headers that you paste directly into the interface, protecting your session cookies and API tokens from server interceptions.
Looking for more professional developer utilities?
Explore All WebToolkit Pro ToolsStrict Client-Side Execution Policy
Zero-Knowledge Protocol: To guarantee absolute user privacy, this tool executes 100% client-side inside your web browser via WebAssembly and local JavaScript. None of your input strings, payloads, keys, or files are ever transmitted to a remote server.
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