100% local and secure
Your data stays on your device and is never sent to our servers.
HTTP Header Analyzer
Inspect a set of HTTP headers and get a readable report covering security directives, caching, CORS, and detected cookie settings.
- 100% local
- Instant
- Free
- No account
- Works offline
- Clipboard
Paste HTTP response lines, with or without the status line.
Data not sent
Processing…0 %
Analysis report
Why use this tool?
Analyze HTTP headers and receive a report about security, caching, CORS, and cookies.
Smart processing
Generate, convert, or validate technical data with purpose-built controls.
Supported formats
Technical formats and syntaxes suited to each generator, converter, or validator.
Save time
Get a clean, ready-to-use result in seconds without installing software or configuring a complex workflow.
Fonctionnement
How does this tool work?
The analyzer converts raw header lines into a normalized structure and checks common protections such as CSP, HSTS, Referrer-Policy, and X-Content-Type-Options. It also reviews caching, compression, CORS, and cookie flags before calculating an indicative score.
Use cases
Audit a web response
Quickly identify missing or incomplete HTTP protections.
Check a CDN setup
Review caching, compression, and proxy-added headers.
Inspect cookies
Detect Secure, HttpOnly, and SameSite attributes.
Guide
How to use this tool
- 1
Enter the data
Fill in the fields or paste the information required for the operation.
- 2
Configure the process
Choose the options, formats, or algorithms that fit your use case.
- 3
Use the result
Generate and copy the locally produced report, code, or value.
Tips and best practices
- Avoid entering production secrets on a shared device.
- Always review generated output before using it in a real environment.
- All operations are performed locally in your browser.
Frequently asked questions
Are data sent to a server?
No. Processing runs locally in your browser and the entered information is not transmitted.
Can generated results be copied?
Yes. Every generated output can be copied directly for reuse in code or documentation.
Can I use sensitive data?
Processing is local, but production secrets should still be avoided on shared or untrusted devices.
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