tescoma.cz website review

51 files are served with short cache lifetimes, so returning visitors download them again (1.5 MB).

8 third-party services load with your homepage (tescoma.com, Google Tag Manager and Facebook and others), adding 2.7 MB and 1.7 s of main-thread time.

tescoma.com costs a phone 932 ms of main-thread work and 1.6 MB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

Your mobile performance score is 51 (desktop: 61). Pages that score under 90 lose visitors before the first paint.

1 file blocks the first paint until they finish downloading. Deferring or inlining it could save about 900 ms.

About 832 KiB of JavaScript is downloaded but never used on this page.

7 images could be 167 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 600 ms faster on a phone.

A phone's processor spends 3.5 s on main-thread work while loading, 2.4 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

Google Tag Manager costs a phone 272 ms of main-thread work and 447 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

15 long tasks block the main thread while loading, the longest for 281 ms. During a long task the page ignores taps.

The page has 1,665 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

About 31 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 150 ms faster on a phone.

Polyfills for old browsers add 132 KiB JavaScript that modern phones do not need.

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

3 KiB JavaScript is shipped twice across bundles.

Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

The page becomes fully interactive after 22.0 s. Good is under 3.8 s.

Visually, the page fills in at 9.0 s (Speed Index). Good is under 3.4 s.

Scripts block taps and scrolling for 1.1 s in total while the page loads. Good is under 200 ms.

Your largest element takes 4.5 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “Bezpečná a rychlá příprava pokrmů vždy pod kontrolou”.

Real visitors wait 337 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

Real visitors wait 865 ms for your server to start answering (75th percentile). Good is under 800 ms.

The first text or image appears after 2.1 s on a phone. Good is under 1.8 s.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 260 ms to 307 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 2.1 s to 2.0 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 3.4 MB in 123 requests on a phone: scripts 2.2 MB (39), images 1,015 KiB (52) and HTML 103 KiB (1). Under 2 MB keeps phones on slow connections fast.

171762.png is on the first screen but marked loading="lazy", so the browser waits before fetching it and the page looks finished later. Load it eagerly (and give it fetchpriority="high" if it is the main image).

By the Sustainable Web Design model, a visit to your homepage emits about 0.96 g of CO₂e: 115.3 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

All page content should be contained by landmarks: 10 elements on the page fail this check, rated moderate by axe-core.

Page should contain a level-one heading: 1 element on the page fails this check, rated moderate by axe-core.

No canonical URL, so duplicate versions of the homepage (with or without www, with tracking parameters) can split ranking signals.

Your meta description is 168 characters; Google truncates after about 160, so the end of your pitch is cut.

Structured data found (Organization and WebSite) but with 3 problems, for example “Organization: missing name”.

No twitter:card tag. X falls back to Open Graph, which is set, so this is minor.

The homepage links to 110 pages on tescoma.cz and 8 external pages.

Your Organization JSON-LD is missing name, sameAs (social profiles), description and contact details. These are the facts AI assistants use to describe a business and to tell it apart from others with a similar name.

There is no https://www.tescoma.cz/llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.

https://www.tescoma.cz/kosik is marked noindex but linked from your homepage. If it is meant to be found, remove the noindex.

https://www.tescoma.cz/prodejny, https://www.tescoma.cz/blog, https://www.tescoma.cz/oblibene-produkty, https://www.tescoma.cz/kosik and https://www.tescoma.cz/produkty use the same meta description. A description written for each page earns more clicks.

https://www.tescoma.cz/kosik has no <h1> headline, so visitors and search engines get no clear main topic.

https://www.tescoma.cz/produkty, https://www.tescoma.cz/pernickuv-vanocni-seznam and https://www.tescoma.cz/vykrajovatka-halloween-delicia-8-ks took over 3 s to send their HTML from our server.

We fetched 15 pages linked from your homepage (of 65 found) and read each the way a search engine does.

9 of 45 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

Large scripts ship without source maps.

On a phone, there is no call to action on the first screen: visitors have to scroll to find out what to do next.

We found no call-to-action buttons or links (such as “Book a demo” or “Get a quote”) anywhere on the homepage.

Social proof on the homepage: 2 trust badges. Pairing it with named testimonials or customer logos makes it far more convincing.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

The homepage carries about 745 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Tag Manager, Meta Pixel and Microsoft Clarity (measured from a US location before any click). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.

Opening the homepage sets 15 cookies (measured from a US location before any click).

No known cookie consent tool loads with the page. Some sites build their own banner, and some only show one to visitors from the EU.

Loading the homepage contacts 16 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.