Cache-Control and CDN header audit Cache-Control and CDN header audit

Audit Cache-Control and CDN headers online

Enter a URL to inspect Cache-Control, ETag, Last-Modified, Expires, Vary, Age and CDN cache status headers.

The report separates HTML pages from static assets and suggests practical fixes for TTL, revalidation and edge cache configuration.

The tool runs directly in the browser and is ready for quick checks without installing software.
Input can be cleared and recalculated immediately, which is useful for repeated small tasks.
Use fullscreen mode when you need more space for long text, structured data or large result blocks.
Copy buttons are available on generated output so results can be reused in code, documents or support chats.
Most operations are deterministic: the same input and options produce the same output.
For sensitive content, prefer local browser tools and review the result before sharing it further.