Tools & Wizards About Us
uochb.cz screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    35% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    82% of websites

  • 78

    SEO

    Google-friendlier than
    39% of websites

uochb.cz

Institute of Organic Chemistry and Biochemistry of the CAS

Page Load Speed

4.8 sec in total

First Response

577 ms

Resources Loaded

3.5 sec

Page Rendered

693 ms

uochb.cz screenshot

About Website

Visit uochb.cz now to see the best up-to-date Uochb content for Nigeria and also check out these interesting facts you probably never knew about uochb.cz

A leading research institution under the umbrella of the Czech Academy of Sciences. Our mission is basic research at the interface of chemical and biological sciences and translation of results from…

Visit uochb.cz

Key Findings

We analyzed Uochb.cz page load time and found that the first response time was 577 ms and then it took 4.2 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

uochb.cz performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

2/100

25%

SI (Speed Index)

Value11.9 s

4/100

10%

TBT (Total Blocking Time)

Value2,730 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value19.8 s

2/100

10%

Network Requests Diagram

uochb.cz

577 ms

www.uochb.cz

549 ms

en

440 ms

styles.css

302 ms

js

47 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 75% of them (33 requests) were addressed to the original Uochb.cz, 9% (4 requests) were made to Connect.facebook.net and 5% (2 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Uochb.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 269.7 kB (10%)

Content Size

2.7 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Uochb.cz main page is 2.7 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. 55% of websites need less resources to load. Images take 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 74.8 kB

  • Original 89.3 kB
  • After minification 63.1 kB
  • After compression 14.5 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 26.2 kB, which is 29% 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 74.8 kB or 84% of the original size.

Image Optimization

-4%

Potential reduce by 103.4 kB

  • Original 2.4 MB
  • After minification 2.3 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. Uochb images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 21.0 kB
  • After minification 21.0 kB
  • After compression 20.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-84%

Potential reduce by 91.5 kB

  • Original 109.0 kB
  • After minification 108.9 kB
  • After compression 17.5 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. Uochb.cz needs all CSS files to be minified and compressed as it can save up to 91.5 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (28%)

Requests Now

25

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Uochb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

uochb.cz

uochb.cz

577 ms

www.uochb.cz

www.uochb.cz

549 ms

en

en

440 ms

styles.css

styles.css

302 ms

js

js

47 ms

scripts.js

scripts.js

615 ms

widgets.js

widgets.js

103 ms

css

css

28 ms

sdk.js

sdk.js

124 ms

open-paper.png

open-paper.png

124 ms

arrow-right.svg

arrow-right.svg

209 ms

search-loop.svg

search-loop.svg

326 ms

logo-uochb.svg

logo-uochb.svg

418 ms

loop.svg

loop.svg

332 ms

arrow-right-light.svg

arrow-right-light.svg

328 ms

b5040ad24054b9abd7eabc9496af00f8bbe8d36b.jpg

b5040ad24054b9abd7eabc9496af00f8bbe8d36b.jpg

1333 ms

c0f1ff77c2df4c399fe135675b4597c534fa9f68.jpg

c0f1ff77c2df4c399fe135675b4597c534fa9f68.jpg

636 ms

b08f5a1eacdd6aa476028a43a1ec6908e2460274.png

b08f5a1eacdd6aa476028a43a1ec6908e2460274.png

689 ms

articles74217.jpeg

articles74217.jpeg

689 ms

fbevents.js

fbevents.js

122 ms

homepage-bg.png

homepage-bg.png

1347 ms

dac3e1ed8e803f8a7dc42fc5ac277dd497eb8ddb.jpg

dac3e1ed8e803f8a7dc42fc5ac277dd497eb8ddb.jpg

761 ms

analytics.js

analytics.js

65 ms

Graphik-Regular.woff

Graphik-Regular.woff

612 ms

Graphik-Medium.woff

Graphik-Medium.woff

666 ms

Graphik-Light.woff

Graphik-Light.woff

672 ms

Graphik-Extralight.woff

Graphik-Extralight.woff

702 ms

Graphik-Thin.woff

Graphik-Thin.woff

755 ms

Graphik-Semibold.woff

Graphik-Semibold.woff

763 ms

Graphik-Bold.woff

Graphik-Bold.woff

762 ms

Graphik-Black.woff

Graphik-Black.woff

792 ms

Graphik-RegularItalic.woff

Graphik-RegularItalic.woff

845 ms

Graphik-MediumItalic.woff

Graphik-MediumItalic.woff

851 ms

Graphik-LightItalic.woff

Graphik-LightItalic.woff

851 ms

Graphik-ExtralightItalic.woff

Graphik-ExtralightItalic.woff

881 ms

Graphik-ThinItalic.woff

Graphik-ThinItalic.woff

935 ms

Graphik-SemiboldItalic.woff

Graphik-SemiboldItalic.woff

942 ms

Graphik-BoldItalic.woff

Graphik-BoldItalic.woff

942 ms

Graphik-BlackItalic.woff

Graphik-BlackItalic.woff

972 ms

sdk.js

sdk.js

22 ms

781294938699707

781294938699707

97 ms

collect

collect

17 ms

widget_iframe.7dae38096d06923d683a2a807172322a.html

widget_iframe.7dae38096d06923d683a2a807172322a.html

61 ms

settings

settings

76 ms

Accessibility Review

uochb.cz accessibility score

59

Accessibility Issues

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.

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

High

Links do not have a discernible name

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

uochb.cz best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

uochb.cz SEO score

78

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

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

uochb.cz

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