HTTP Header Checker — View Response Headers (Free)

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What you get

All headers

Every header with a one-line explanation

Compression & cache

gzip/brotli and how long copies are kept

Server & CDN

The software and network serving the page

Response time

Time to first byte

About the HTTP Header Checker

Before any page content arrives, the server sends HTTP headers: the status code, content type, caching rules, compression, cookies, security policies and indexing instructions like X-Robots-Tag. Most SEO and speed problems leave a trace here.

Nuqti requests the URL like a crawler, follows redirects, and lists every response header with a short explanation — plus quick verdicts on compression, caching, CDN and HTTP/3.

How to use it

1Enter a URLAny public page, e.g. https://example.com/page.
2Watch the check run liveEach step appears the moment it finishes — no waiting on a blank screen.
3Sign in free with GoogleSave your results and keep using every Nuqti tool on the free plan.

Frequently asked questions

How do I check the HTTP headers of a website?

Enter the URL above. You'll see the status code and every response header the server returned.

What is X-Robots-Tag?

A header version of meta robots — it can noindex PDFs, images or whole sites. A stray 'noindex' here can drop pages from Google.

How do I know if compression is on?

Look for content-encoding: gzip or br (Brotli). No compression means larger, slower pages.

Which caching header should I use?

For static files: cache-control: public, max-age=31536000, immutable. For HTML: a short max-age or no-cache with an ETag.

Related free tools

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