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.