Tools & Wizards About Us
stuba.sk screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

stuba.sk

Slovenská technická univerzita v Bratislave (STU)

Page Load Speed

6.4 sec in total

First Response

323 ms

Resources Loaded

4.8 sec

Page Rendered

1.3 sec

stuba.sk screenshot

About Website

Welcome to stuba.sk homepage info - get ready to check STU Ba best content for Slovakia right away, or after learning these important things about stuba.sk

Slovenská technická univerzita v Bratislave (STU) - oficiálna stránka univerzity

Visit stuba.sk

Key Findings

We analyzed Stuba.sk page load time and found that the first response time was 323 ms and then it took 6.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

stuba.sk performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.1 s

1/100

10%

LCP (Largest Contentful Paint)

Value12.9 s

0/100

25%

SI (Speed Index)

Value11.3 s

5/100

10%

TBT (Total Blocking Time)

Value530 ms

56/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value27.2 s

0/100

10%

Network Requests Diagram

stuba.sk

323 ms

www.stuba.sk

1296 ms

css

33 ms

css2

61 ms

gha7tuz.css

117 ms

Our browser made a total of 86 requests to load all elements on the main page. We found that 84% of them (72 requests) were addressed to the original Stuba.sk, 5% (4 requests) were made to Use.typekit.net and 3% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Stuba.sk.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.8 MB (32%)

Content Size

5.7 MB

After Optimization

3.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Stuba.sk main page is 5.7 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. Images take 3.5 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 216.0 kB

  • Original 251.4 kB
  • After minification 159.4 kB
  • After compression 35.4 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 92.0 kB, which is 37% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 216.0 kB or 86% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 3.5 MB
  • After minification 3.5 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. STU Ba images are well optimized though.

JavaScript Optimization

-77%

Potential reduce by 1.2 MB

  • Original 1.5 MB
  • After minification 1.5 MB
  • After compression 355.6 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 1.2 MB or 77% of the original size.

CSS Optimization

-88%

Potential reduce by 419.6 kB

  • Original 479.4 kB
  • After minification 395.3 kB
  • After compression 59.7 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Stuba.sk needs all CSS files to be minified and compressed as it can save up to 419.6 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (21%)

Requests Now

75

After Optimization

59

  • Images
  • JavaScript
  • CSS

The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of STU Ba. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

stuba.sk

stuba.sk

323 ms

www.stuba.sk

www.stuba.sk

1296 ms

css

css

33 ms

css2

css2

61 ms

gha7tuz.css

gha7tuz.css

117 ms

style.min.css

style.min.css

407 ms

magnific-popup.css

magnific-popup.css

307 ms

app_stu.css

app_stu.css

1114 ms

js

js

48 ms

p.css

p.css

23 ms

jquery.min.js

jquery.min.js

103 ms

lightbox.min.js

lightbox.min.js

102 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

178 ms

script.min.js

script.min.js

205 ms

flickity.pkgd.min.js

flickity.pkgd.min.js

36 ms

index.js

index.js

960 ms

ccookie.js

ccookie.js

279 ms

flickity.pkgd.min.js

flickity.pkgd.min.js

16 ms

close.png

close.png

863 ms

loading.gif

loading.gif

845 ms

prev.png

prev.png

543 ms

next.png

next.png

1200 ms

logo_stu.svg

logo_stu.svg

151 ms

logo_stu_gray.svg

logo_stu_gray.svg

324 ms

Budova_rektoratu.jpg

Budova_rektoratu.jpg

543 ms

zezlo-promocie.jpg

zezlo-promocie.jpg

542 ms

Vedenie_STU.jpg

Vedenie_STU.jpg

544 ms

Promocie_absolventov.jpg

Promocie_absolventov.jpg

545 ms

Slavnostna_inauguracia_rektora_STU.jpg

Slavnostna_inauguracia_rektora_STU.jpg

553 ms

Bebo_White_-_doctor_honoris_causa.jpg

Bebo_White_-_doctor_honoris_causa.jpg

554 ms

Na_STU_studuje_vela_dievcat.jpg

Na_STU_studuje_vela_dievcat.jpg

635 ms

Letna_univerzita_pre_stredoskolakov.jpg

Letna_univerzita_pre_stredoskolakov.jpg

655 ms

STU_na_veltrhoch.jpg

STU_na_veltrhoch.jpg

655 ms

Nasi_studenti.jpg

Nasi_studenti.jpg

753 ms

Pocas_vyucby.jpg

Pocas_vyucby.jpg

755 ms

K_studentskemu_zivotu_patri_aj_zabava.jpg

K_studentskemu_zivotu_patri_aj_zabava.jpg

756 ms

zezlo-promocie.jpg

zezlo-promocie.jpg

780 ms

IMG_8906.jpg

IMG_8906.jpg

857 ms

70_vyrocie_FCHPT.jpg

70_vyrocie_FCHPT.jpg

858 ms

UTI.jpg

UTI.jpg

886 ms

Moderny_areal_STU_v_Mlysnkej_doline.jpg

Moderny_areal_STU_v_Mlysnkej_doline.jpg

943 ms

Monopost_studentkeho_Stuba_Green_Teamu.jpg

Monopost_studentkeho_Stuba_Green_Teamu.jpg

958 ms

Superciste_laboratorium_-_prostredie_100-nasobne_cistejsie_ako_v_operacnych_salach.jpg

Superciste_laboratorium_-_prostredie_100-nasobne_cistejsie_ako_v_operacnych_salach.jpg

958 ms

Linearny_urychlovac_castic.jpg

Linearny_urychlovac_castic.jpg

961 ms

Centrum_pre_nanotechnologie.jpg

Centrum_pre_nanotechnologie.jpg

992 ms

Digipoint_Ako_funguje_operator_016.jpg

Digipoint_Ako_funguje_operator_016.jpg

1044 ms

DSC_3520.jpg

DSC_3520.jpg

1058 ms

IMG_9105.jpg

IMG_9105.jpg

1059 ms

str_7-8_STU.jpg

str_7-8_STU.jpg

1061 ms

image_216634c88dd9089.jpeg

image_216634c88dd9089.jpeg

1098 ms

image_21662f64dc48c7a.jpeg

image_21662f64dc48c7a.jpeg

1146 ms

image_216630e13b28461.jpeg

image_216630e13b28461.jpeg

1160 ms

gtm.js

gtm.js

30 ms

STUYOU-image.jpg

STUYOU-image.jpg

1126 ms

d

d

184 ms

d

d

287 ms

d

d

287 ms

TK_STARMUS_1_zdroj_foto_PeterKiska.jpg

TK_STARMUS_1_zdroj_foto_PeterKiska.jpg

1011 ms

analytics.js

analytics.js

260 ms

js

js

247 ms

07-08_obalka.jpg

07-08_obalka.jpg

957 ms

image_21661944f93f741.jpeg

image_21661944f93f741.jpeg

913 ms

collect

collect

8 ms

image_21660e713ca1d59.jpeg

image_21660e713ca1d59.jpeg

725 ms

image_21660d1a51aac57.jpeg

image_21660d1a51aac57.jpeg

727 ms

studium_na_STU_1.jpg

studium_na_STU_1.jpg

824 ms

MK_03316.jpg

MK_03316.jpg

1820 ms

DSC_8714-2.jpg

DSC_8714-2.jpg

1086 ms

buxus-image%3E

buxus-image%3E

1003 ms

Partnerstva_a_spoluprace_STU.jpg

Partnerstva_a_spoluprace_STU.jpg

978 ms

architektura.jpg

architektura.jpg

731 ms

automobilove_inzinierstvo.jpg

automobilove_inzinierstvo.jpg

879 ms

enlektronika.jpg

enlektronika.jpg

877 ms

chemia.jpg

chemia.jpg

816 ms

informatika.jpg

informatika.jpg

814 ms

management.jpg

management.jpg

815 ms

materialy.jpg

materialy.jpg

877 ms

vyrobne_technolofie.jpg

vyrobne_technolofie.jpg

828 ms

zivotne_prostredie.jpg

zivotne_prostredie.jpg

816 ms

stu-rektorat-left.jpg

stu-rektorat-left.jpg

815 ms

medaila.jpg

medaila.jpg

876 ms

stu-aula-ludia.jpg

stu-aula-ludia.jpg

872 ms

Banska_Stiavnica_1.jpg

Banska_Stiavnica_1.jpg

829 ms

dropdown-chevron.svg

dropdown-chevron.svg

814 ms

dropdown-chevron-gray.svg

dropdown-chevron-gray.svg

816 ms

arrow-list-icon.svg

arrow-list-icon.svg

882 ms

Accessibility Review

stuba.sk accessibility score

95

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Links do not have a discernible name

Best Practices

stuba.sk best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

stuba.sk SEO score

90

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    SK

  • Language Claimed

    SK

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stuba.sk can be misinterpreted by Google and other search engines. Our service has detected that Slovak is used on the page, and it matches the claimed language. Our system also found out that Stuba.sk main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

stuba.sk

Open Graph description is not detected on the main page of STU Ba. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: