SEO

HTTP headers analyser — Free Security Tool

Every response header, explained. Fast server-side check, no account needed.

AstrinaEditorial August 8, 2026 2 min read EN RU UK

HTTP headers analyser is an Astrina tool for website security and configuration. Every response header, explained. It fetches the target page from our servers and returns results in a few seconds.

How to use HTTP headers analyser

  1. Enter the URL you want to analyse.
  2. Click "Run the check."
  3. Review the results — each item is explained.
  4. Fix any issues and re-run to confirm.

What HTTP headers analyser is used for

Professionals working in website security and configuration use this tool to save time and catch errors before they become problems. Common use cases:

  • Auditing and quality checks in website security and configuration
  • Validating or converting output before deploying
  • Debugging issues quickly without switching between multiple tools
  • Generating boilerplate output to speed up development

Key features

  • Fast: server-side analysis in seconds
  • Free for most use cases — no account required for the majority of checks
  • Accurate: uses the same techniques as professional SEO and security scanners
  • Privacy-friendly: we do not store the content we analyse beyond the session

About this tool

This is part of Astrina's suite of 12 website security and configuration tools. All tools are available at astrina.io/utilities.

Frequently asked questions

Is HTTP headers analyser free?

The tool is free to use for basic runs. Daily limits apply for server-side tools without an account; a free account raises those limits.

Do I need an Astrina account?

For most checks, no account is needed. An account is required for higher usage limits or paid features.

Can I use HTTP headers analyser through the API?

Yes. This tool is available through the Astrina REST API with your API key. See /api/ for documentation.

How accurate is HTTP headers analyser?

The tool uses the same techniques as professional SEO and security scanners. Results reflect what search engines and browsers actually see.

Try the HTTP headers analyser now — no account required for most checks, and the result is ready in seconds.

Try it on your site

The core counter is free. Add your site and explore every feature.

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