SEO Tool

Page load speed check

Анализ времени ответа сервера, TTFB и размера страницы

What does the tool check?

Timing

  • • TTFB (Time to First Byte)
  • • Content download time
  • • Total response time

Size

  • • HTML document size
  • • Compression usage

Headers

  • • Content-Encoding
  • • Cache-Control
  • • Server

Disclaimer: Data is collected from public sources. We do not store the checked URLs or analysis results. Use for lawful purposes only.

Continue checking

Images checkeralt, size and formatsMobile-friendlinessresponsiveness and usabilitySite SEO auditfull check of up to 200 pages

Load speed as a ranking factor

Why speed matters

Speed affects both rankings and conversion: every extra 100 ms of delay lowers the likelihood of a purchase. Google rates sites by the Core Web Vitals metrics — LCP, INP and CLS.

The tool measures server response time, total page size, and the number and weight of loaded resources, and shows exactly what is slowing down the load.

Where to start optimizing

Three things usually give the biggest effect: optimizing images, enabling caching and compression on the server, and reducing the number of third-party scripts (widgets, counters, chats).

Also test speed under mobile conditions: most traffic is mobile, and mobile networks are slower and more sensitive to page weight.

Frequently asked questions

Does site speed affect SEO?+

Yes. Speed is a confirmed Google ranking factor (Core Web Vitals) and is taken into account by Yandex. Slow sites also lose visitors: a delay of more than 3 seconds noticeably increases bounces.

What is TTFB and what value is considered good?+

TTFB (Time To First Byte) is the time until the first byte of the server response is received. A value up to 200–500 ms is considered good. A high TTFB points to slow hosting, a heavy backend or a lack of caching.

How can I speed up page loading?+

The main measures: compression and modern image formats (WebP/AVIF), caching, gzip/brotli compression, minifying CSS and JS, deferring non-critical scripts, a CDN and fast hosting.

How is this test different from PageSpeed Insights?+

Our tool does a fast server-side check: response time, page size and resource composition. PageSpeed Insights additionally emulates in-browser rendering and collects Chrome UX Report field data — use both.