SEO tools / Performance
Page cache checker
Browser and CDN caching headers of a page (Cache-Control, ETag, Age, CDN cache status). Replaces the Google cache checker: Google retired its page cache in 2024.
More performance tools
Image dimensions checkerImages without width and height that make the page jump (CLS).
Page speed checkerPage speed score, load timings, page weight and what slows the page down.
TTFB checkerTime to first byte, DNS, connect and TLS timings.
Page size checkerHow big is the page's HTML?
DOM size checkerCount DOM elements, depth and the widest node.
HTTP requests checkerHow many files a page loads, by type.
Lazy loading images checkerAre images below the top lazy-loaded?
JavaScript defer checkerFind render-blocking scripts.
How to use the page cache checker
Browser and CDN caching headers of a page (Cache-Control, ETag, Age, CDN cache status). Replaces the Google cache checker: Google retired its page cache in 2024. Enter the page address above and press the button. Results appear on this page and you can share the link.
Visitors can run 30 checks a day. Create a free account for projects, site audits, rank tracking and saved keyword lists.