zsem.hr website review

19 files block the first paint until they finish downloading. Deferring or inlining them could save about 2.3 s.

Your mobile performance score is 49. Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

About 355 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 840 ms faster on a phone.

7 third-party services load with your homepage (Google Tag Manager, Facebook and chatbase.co and others), adding 788 KiB and 1.0 s of main-thread time.

Google Tag Manager costs a phone 728 ms of main-thread work and 511 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.

10 long tasks block the main thread while loading, the longest for 422 ms. During a long task the page ignores taps.

A phone's processor spends 2.5 s on main-thread work while loading, 1.3 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

7 files are served with short cache lifetimes, so returning visitors download them again (209 KiB).

About 14 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 90 ms faster on a phone.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 50 ms).

Polyfills for old browsers add 23 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.

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.

Real visitors wait 4.4 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors see the first content after 3.5 s (75th percentile). Good is under 1.8 s.

Real visitors wait 2.8 s for your server to start answering (75th percentile). Good is under 800 ms.

Your largest element takes 6.0 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Na našoj web stranici koristimo kolačiće kako bismo vam pru…”.

The page becomes fully interactive after 11.6 s. Good is under 3.8 s.

Scripts block taps and scrolling for 918 ms in total while the page loads. Good is under 200 ms.

The first text or image appears after 3.1 s on a phone. Good is under 1.8 s.

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' tap response (inp) went from 113 ms to 133 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' largest content (lcp) went from 1.6 s to 3.4 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Visually, the page fills in at 4.7 s (Speed Index). Good is under 3.4 s.

By the Sustainable Web Design model, a visit to your homepage emits about 0.37 g of CO₂e: 44.3 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

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

All page content should be contained by landmarks: 28 elements on the page fail this check, rated moderate by axe-core.

11 visible links have no text or label, so screen readers cannot say where they go.

Headings should not be empty: 1 element on the page fails this check, rated minor by axe-core.

Headings skip levels (h1 → h3 and h2 → h4), which makes the page harder to scan with a screen reader.

Your title is 71 characters, so Google will cut it off around 60: “ZŠEM | Najbolje visoko učilište a za ekonomiju i management u Hrvatskoj”.

No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

The homepage links to 101 pages on zsem.hr and 16 external pages.

There is no Organization (or LocalBusiness) JSON-LD, so search engines and AI assistants have no machine-readable facts about who runs the site: its name, logo, profiles and contact details.

There is no https://zsem.hr/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.

We fetched 15 pages linked from your homepage (of 74 found) and read each the way a search engine does.

1 error was logged to the browser console while the page loaded, for example “Failed to load resource: net::ERR_FAILED”.

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: 1 testimonial or review block. Pairing it with named testimonials or customer logos makes it far more convincing.

There is no form on the homepage, so every lead has to click through to another page first.

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 693 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager and Meta Pixel (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 11 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 11 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.