Is this tool private?

Yes. All processing happens locally in your browser. No data is uploaded.

What extras does this tool have?

Extras: (1) Core function, (2) Batch mode, (3) Copy results, (4) Download, (5) History, (6) CSV export, (7) Custom options, (8) Validation, (9) Warnings, (10) Stats, (11) Multi-format, (12) Configurable, (13) Preview.

Network, Runs in your browser

HTTP Header Parser

Parse HTTP headers, validate format, show security recommendations. 100% private. 100% private.

100% Private Works Offline Instant

HTTP response headers

4 headers · 6 recommendations

[WARNING] Missing Strict-Transport-Security (HSTS) header

[CRITICAL] Missing Content-Security-Policy header

[WARNING] Missing X-Frame-Options or CSP frame-ancestors (clickjacking risk)

[WARNING] Missing X-Content-Type-Options: nosniff

[INFO] Consider setting Referrer-Policy

[INFO] Server header exposes version: "nginx/1.21.0"

Privacy: all parsing runs locally in your browser.

Parse HTTP headers, validate format, show security recommendations. 100% private. 100% private. Everything runs locally in your browser — your data never leaves your device.

How to use

Enter your input in the tool above.
Adjust any options to your preference.
Use the Copy or Download buttons to save the result.
Everything happens locally — your data never leaves your browser.

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