HTTP cache and CDN edge checker

Inspect Cache-Control, Age, Vary, ETag, CDN cache hit or bypass signals, and edge-cache optimization advice for a URL.

Waiting

The result will appear here as structured cards.

Example results you can open

Short, high-intent examples that are easy to open, share, and understand for search engines and AI systems.

Cache/CDN

Check homepage cache and CDN headers

Review Cache-Control, Age, Vary, ETag, and CDN clues after a release.

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Tool cache

Audit a tool-page cache policy

Read public response headers for a tool page and inspect cache and edge hints.

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AI entry cache

Check llms.txt cache and content type

Confirm the AI discovery entry returns text/plain and a reasonable cache policy after release.

Open example
robots cache

Check robots.txt cache and content type

Confirm robots.txt returns text/plain, practical Cache-Control, ETag, and Vary signals for crawler-entry QA.

Open example
sitemap cache

Check sitemap.xml cache and content type

Confirm sitemap.xml returns XML content type, cache policy, and validators for Google, Bing, Baidu, and AI fetchers.

Open example
Baidu verify cache

Check Baidu verification file cache and content type

Confirm the Baidu site-verification file is publicly readable with stable content type, cache policy, and validators.

Open example
Bing auth cache

Check BingSiteAuth.xml cache and content type

Confirm the Bing Webmaster verification file returns XML content type, practical caching, and validator signals.

Open example
IndexNow key cache

Check IndexNow key file cache and content type

Confirm the IndexNow key file is public, stable, and not over-cached before interpreting submission results.

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Brand icon cache

Check brand icon cache policy

Confirm the brand SVG icon returns stable Content-Type, Cache-Control, and validator signals for search, AI, and share fetches.

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Favicon cache

Check favicon.ico cache and content type

Confirm favicon.ico returns practical Cache-Control, Content-Type, ETag, and redirect cache signals after release.

Open example
Webmaster cache

Check website-check topic cache and content type

Confirm the webmaster diagnostic entrance returns stable HTML, practical Cache-Control, and validator signals for search and AI fetchers.

Open example
Health cache

Check health JSON cache and content type

Confirm /api/health returns stable JSON content type, Cache-Control, Vary, and validator signals after a dual-origin release.

Open example

FAQ

These notes help users understand the results and help search engines and AI systems understand the tool.

What does HTTP cache and CDN edge checker do?

It helps you inspect or process this value and get a readable result quickly.

Is my input saved?

Local tools run in the browser when possible. Server-side checks only use the input needed to complete the lookup.

How should I read Cache-Control, Age, and ETag together?

Cache-Control defines policy, Age shows how long the response has lived in cache, and ETag supports revalidation. Together they show whether caching is likely working.

Can CDN cache hits always be seen in response headers?

No. CDNs expose different headers and some hide hit signals. This tool reads public clues; CDN dashboards remain the source of truth.

Should llms.txt and robots.txt use long caching?

Avoid overly long caching. They are discovery entry files for search and AI systems, so keep them publicly cacheable with a short refresh window and recheck Content-Type, status, and sitemap links after changes.

Related long-tail searches

Based on this query: https://chakan.com/llms.txt

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