Cache-Control checker
Explains a page's caching headers - browser vs shared caching, freshness, revalidation, and whether the settings fit what the URL looks like.
1 · Input
What is checked
Cache-Control, Expires, Age, ETag, Last-Modified, Vary, Pragma, and CDN-specific cache-status headers where a known one is present - each explained in plain language rather than just listed.
Context-sensitive, not one-size-fits-all
A URL that looks like a fingerprinted static asset (a content hash in the filename) gets a different expectation than an HTML document or an API response - the same long max-age is a sensible default for one and a stale-content risk for the other, and this checker explains which applies.
.webp)
.webp)
Rate this tool
Was this tool useful? Your feedback helps us improve it.
No ratings yet — be the first to rate this tool.