kolorky.pl website review

3 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.1 s.

A phone's processor spends 7.9 s on main-thread work while loading, 2.1 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

8 third-party services load with your homepage (Shopify, rebuyengine.com and Clarity and others), adding 1.0 MB and 1.0 s of main-thread time.

Your mobile performance score is 57. Pages that score under 90 lose visitors before the first paint.

Shopify costs a phone 585 ms of main-thread work and 623 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.

About 112 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 450 ms faster on a phone.

About 498 KiB of JavaScript is downloaded but never used on this page.

18 long tasks block the main thread while loading, the longest for 472 ms. During a long task the page ignores taps.

rebuyengine.com costs a phone 289 ms of main-thread work and 300 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.

The page has 2,997 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

4 images could be 147 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 150 ms faster on a phone.

17 files are served with short cache lifetimes, so returning visitors download them again (33 KiB).

Polyfills for old browsers add 18 KiB JavaScript that modern phones do not need.

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

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

The page becomes fully interactive after 14.8 s. Good is under 3.8 s.

Scripts block taps and scrolling for 954 ms in total while the page loads. Good is under 200 ms.

Visually, the page fills in at 7.2 s (Speed Index). Good is under 3.4 s.

Your largest element takes 4.4 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “cihal_vizualizace_plenka2_hp_6e388480-a84f-433e-99fb-468e83…”.

Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' largest content (lcp) went from 1.2 s to 1.2 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Chrome's UX Report (opens in a new tab) has too little real-visitor traffic for this site, so the figures here are lab measurements from Google's test phone on a throttled 4G connection.

Your homepage downloads 2.8 MB in 163 requests on a phone: scripts 1.0 MB (89), images 738 KiB (21) and other files 527 KiB (29). Under 2 MB keeps phones on slow connections fast.

1 image further down the page (22 KiB) download before anyone scrolls to it. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 0.78 g of CO₂e: 93.9 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

25 buttons have no accessible name, so screen readers announce just “button”.

2 tap targets are too small or too close together to hit reliably with a finger.

1 frame has no title, so screen-reader users cannot tell what it contains.

All page content should be contained by landmarks: 2 elements on the page fail this check, rated moderate by axe-core.

Alternative text of images should not be repeated as text: 1 element on the page fails this check, rated minor by axe-core.

Headings skip levels (h1 → h3 and h1 → h3), which makes the page harder to scan with a screen reader.

Your title is only 7 characters: “Kolorky”. Between 30 and 65 characters leaves room to say what you do and for whom.

There are 2 <h1> headlines (“” and “Blog”). One clear main headline is easier for people and search engines.

Your meta description is 163 characters; Google truncates after about 160, so the end of your pitch is cut.

Structured data found (Organization and WebSite) but with 1 problem, for example “Organization: url points at a different host (https://www.kolorky.cz)”.

The homepage links to 289 pages on kolorky.pl and 14 external pages.

https://www.kolorky.pl/collections/vse, https://www.kolorky.pl/collections/kosmetika-pece-o-dite, https://www.kolorky.pl/collections/pece-o-telo, https://www.kolorky.pl/collections/pece-o-tvar, https://www.kolorky.pl/collections/doplnky-k-peci and https://www.kolorky.pl/collections/knihy and 1 other use the same meta description. A description written for each page earns more clicks.

We fetched 15 pages linked from your homepage (of 88 found) and read each the way a search engine does.

7 of 14 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

2 errors were logged to the browser console while the page loaded, for example “Cannot read properties of null (reading 'querySelector')”.

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

Social proof on the homepage: a star rating. 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 1,527 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, 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 17 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 31 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.