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ibt.cas.cz screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 75% of websites

  • 69

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 81

    SEO

    Google-friendlier than
    43% of websites

ibt.cas.cz

Biotechnologický ústav - Biotechnologický ústav AV ČR

Page Load Speed

5.5 sec in total

First Response

478 ms

Resources Loaded

4.9 sec

Page Rendered

194 ms

ibt.cas.cz screenshot

About Website

Welcome to ibt.cas.cz homepage info - get ready to check Ibt Cas best content for Czech Republic right away, or after learning these important things about ibt.cas.cz

Cílem činnosti Biotechnologického ústavu AV ČR, v. v. i. je základní výzkum v oblasti molekulárně biologických věd na špičkové úrovni a výhledově převod biotechnologických metod a molekulárních nástro...

Visit ibt.cas.cz

Key Findings

We analyzed Ibt.cas.cz page load time and found that the first response time was 478 ms and then it took 5.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

ibt.cas.cz performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value10.1 s

1/100

25%

SI (Speed Index)

Value15.5 s

1/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.301

40/100

15%

TTI (Time to Interactive)

Value22.5 s

1/100

10%

Network Requests Diagram

ibt.cas.cz

478 ms

www.ibt.cas.cz

999 ms

mootools-1.2.4-core-yc.js

477 ms

avcr.press.js

239 ms

main.css

491 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 95% of them (36 requests) were addressed to the original Ibt.cas.cz, 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Ibt.cas.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 238.6 kB (11%)

Content Size

2.2 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Ibt.cas.cz main page is 2.2 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. 25% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 33.7 kB

  • Original 40.8 kB
  • After minification 37.9 kB
  • After compression 7.2 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 33.7 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 10.7 kB

  • Original 1.9 MB
  • After minification 1.9 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. Ibt Cas images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 194.2 kB

  • Original 284.4 kB
  • After minification 266.6 kB
  • After compression 90.3 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 194.2 kB or 68% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (42%)

Requests Now

36

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ibt Cas. 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

ibt.cas.cz

ibt.cas.cz

478 ms

www.ibt.cas.cz

www.ibt.cas.cz

999 ms

mootools-1.2.4-core-yc.js

mootools-1.2.4-core-yc.js

477 ms

avcr.press.js

avcr.press.js

239 ms

main.css

main.css

491 ms

highslide-with-gallery.js

highslide-with-gallery.js

603 ms

highslide.css

highslide.css

362 ms

jquery-1.10.1.min.js

jquery-1.10.1.min.js

830 ms

jquery-collapse.js

jquery-collapse.js

490 ms

body-bg.png

body-bg.png

242 ms

footer.png

footer.png

229 ms

trigger-search-bg.png

trigger-search-bg.png

231 ms

logo.cs.png

logo.cs.png

353 ms

slide2-2.jpg

slide2-2.jpg

954 ms

slide2-3.jpg

slide2-3.jpg

716 ms

slide2-4.jpg

slide2-4.jpg

842 ms

slide2-5.jpg

slide2-5.jpg

940 ms

slide2-6.jpg

slide2-6.jpg

1175 ms

slide1-4.jpg

slide1-4.jpg

867 ms

slide1-1.jpg

slide1-1.jpg

1549 ms

slide1-2.jpg

slide1-2.jpg

1550 ms

slide1-3.jpg

slide1-3.jpg

1689 ms

slide2-7.jpg

slide2-7.jpg

2016 ms

menu-bg.png

menu-bg.png

1190 ms

arrow-right.png

arrow-right.png

1412 ms

nastenka-button.png

nastenka-button.png

1425 ms

dulezite-biocev.png

dulezite-biocev.png

1771 ms

dulezite-avcr.png_611509177.png

dulezite-avcr.png_611509177.png

1667 ms

dulezite_Instruct.png

dulezite_Instruct.png

1783 ms

dulezite_Elixir_CZ.png

dulezite_Elixir_CZ.png

1785 ms

logo.cs.small.png

logo.cs.small.png

1904 ms

analytics.js

analytics.js

24 ms

collect

collect

11 ms

print.css

print.css

242 ms

print.css

print.css

242 ms

rounded-white.png

rounded-white.png

233 ms

zoomout.cur

zoomout.cur

241 ms

loader.white.gif

loader.white.gif

242 ms

Accessibility Review

ibt.cas.cz accessibility score

90

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

Best Practices

ibt.cas.cz best practices score

69

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

ibt.cas.cz SEO score

81

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    CS

  • Language Claimed

    CS

  • Encoding

    UTF-8

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

ibt.cas.cz

Open Graph description is not detected on the main page of Ibt Cas. 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: