Tools & Wizards About Us
irb.hr screenshot

Report Summary

  • 30

    Performance

    Renders faster than
    49% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 81% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

irb.hr

Početna - Institut Ruđer Bošković

Page Load Speed

4.8 sec in total

First Response

695 ms

Resources Loaded

3.8 sec

Page Rendered

276 ms

irb.hr screenshot

About Website

Visit irb.hr now to see the best up-to-date Irb content for Croatia and also check out these interesting facts you probably never knew about irb.hr

Institut je najveći hrvatski znanstveno-istraživački centar multidisciplinarnog karaktera

Visit irb.hr

Key Findings

We analyzed Irb.hr page load time and found that the first response time was 695 ms and then it took 4.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

irb.hr performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.1 s

0/100

25%

SI (Speed Index)

Value9.5 s

12/100

10%

TBT (Total Blocking Time)

Value460 ms

61/100

30%

CLS (Cumulative Layout Shift)

Value0.207

60/100

15%

TTI (Time to Interactive)

Value11.8 s

17/100

10%

Network Requests Diagram

www.irb.hr

695 ms

app.css

1128 ms

style.css

341 ms

style.css

342 ms

app.js

1374 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 67% of them (20 requests) were addressed to the original Irb.hr, 13% (4 requests) were made to Fonts.gstatic.com and 7% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Irb.hr.

Page Optimization Overview & Recommendations

Page size can be reduced by 769.8 kB (28%)

Content Size

2.8 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Irb.hr main page is 2.8 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. 30% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 42.4 kB

  • Original 50.7 kB
  • After minification 36.6 kB
  • After compression 8.3 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 14.0 kB, which is 28% 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 42.4 kB or 84% of the original size.

Image Optimization

-3%

Potential reduce by 53.0 kB

  • Original 1.8 MB
  • After minification 1.8 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. Irb images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 292.0 kB

  • Original 433.6 kB
  • After minification 433.6 kB
  • After compression 141.6 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 292.0 kB or 67% of the original size.

CSS Optimization

-86%

Potential reduce by 382.4 kB

  • Original 446.4 kB
  • After minification 446.4 kB
  • After compression 64.0 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. Irb.hr needs all CSS files to be minified and compressed as it can save up to 382.4 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (38%)

Requests Now

24

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Irb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.irb.hr

www.irb.hr

695 ms

app.css

app.css

1128 ms

style.css

style.css

341 ms

style.css

style.css

342 ms

app.js

app.js

1374 ms

app.js

app.js

342 ms

app.js

app.js

349 ms

gYe8hbFO.js

gYe8hbFO.js

20 ms

css

css

36 ms

css

css

53 ms

analytics.js

analytics.js

66 ms

e60468caa6a1f585f5dd14f9ad80e486.svg

e60468caa6a1f585f5dd14f9ad80e486.svg

325 ms

ab34f961538b16bfd1cc47bc9cb917f8.svg

ab34f961538b16bfd1cc47bc9cb917f8.svg

323 ms

IRB-dodijelio-godisnje-nagrade-za-najbolje-znanstvene-radove-i-poseban-doprinos-u-popularizaciji-znanosti.jpg

IRB-dodijelio-godisnje-nagrade-za-najbolje-znanstvene-radove-i-poseban-doprinos-u-popularizaciji-znanosti.jpg

1022 ms

U-dobra-stara-vremena-genomi-su-bili-bogatiji.jpg

U-dobra-stara-vremena-genomi-su-bili-bogatiji.jpg

661 ms

Tim-MediBoost-pobjednik-je-AI4Health.Cro-inovacijskog-natjecanja.jpg

Tim-MediBoost-pobjednik-je-AI4Health.Cro-inovacijskog-natjecanja.jpg

1116 ms

Premijer-posjetio-IRB-obisao-radove-na-projektu-O-ZIP-i-protupotresnoj-obnovi.jpg

Premijer-posjetio-IRB-obisao-radove-na-projektu-O-ZIP-i-protupotresnoj-obnovi.jpg

1165 ms

Krunoslav-Uzarevic-dobitnik-je-nagrade-HAZU-a_i480.png

Krunoslav-Uzarevic-dobitnik-je-nagrade-HAZU-a_i480.png

893 ms

In-memoriam-akademiku-Ksenofontu-Ilakovcu_i480.jpg

In-memoriam-akademiku-Ksenofontu-Ilakovcu_i480.jpg

437 ms

Kapitalni-infrastrukturni-projekt-O-ZIP.jpg

Kapitalni-infrastrukturni-projekt-O-ZIP.jpg

1009 ms

Europsko-sjediste-za-razvoj-AI-inovacija-u-zdravstvu_i480.png

Europsko-sjediste-za-razvoj-AI-inovacija-u-zdravstvu_i480.png

890 ms

Molekule-iz-mora-za-primjenu-u-industriji_i480.png

Molekule-iz-mora-za-primjenu-u-industriji_i480.png

1230 ms

Razvoj-naprednih-materijala-i-senzora_i480.png

Razvoj-naprednih-materijala-i-senzora_i480.png

1460 ms

zYXgKVElMYYaJe8bpLHnCwDKhd_eEw.woff

zYXgKVElMYYaJe8bpLHnCwDKhd_eEw.woff

25 ms

zYX9KVElMYYaJe8bpLHnCwDKjWr7AI9scg.woff

zYX9KVElMYYaJe8bpLHnCwDKjWr7AI9scg.woff

51 ms

jizDREVNn1dOx-zrZ2X3pZvkTiUR2zE.woff

jizDREVNn1dOx-zrZ2X3pZvkTiUR2zE.woff

199 ms

jizAREVNn1dOx-zrZ2X3pZvkTi2k_iI6q10.woff

jizAREVNn1dOx-zrZ2X3pZvkTi2k_iI6q10.woff

108 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1333 ms

collect

collect

30 ms

js

js

76 ms

Accessibility Review

irb.hr accessibility score

93

Accessibility Issues

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

irb.hr best practices score

83

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

SEO Factors

irb.hr 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

    HR

  • Language Claimed

    HR

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Irb.hr can be misinterpreted by Google and other search engines. Our service has detected that Croatian is used on the page, and it matches the claimed language. Our system also found out that Irb.hr 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

irb.hr

Open Graph data is detected on the main page of Irb. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: