Tools & Wizards About Us
etlab.cz screenshot

Report Summary

  • 48

    Performance

    Renders faster than
    66% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

etlab.cz

ETLab | Eye-tracking laboratory FBE MENDELU Brno

Page Load Speed

3.8 sec in total

First Response

348 ms

Resources Loaded

2.9 sec

Page Rendered

526 ms

etlab.cz screenshot

About Website

Click here to check amazing ETLab content. Otherwise, check out these important facts you probably never knew about etlab.cz

Eyetracking laboratory PEF Mendelu

Visit etlab.cz

Key Findings

We analyzed Etlab.cz page load time and found that the first response time was 348 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

etlab.cz performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

36/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

27/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value330 ms

75/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value25.3 s

0/100

10%

Network Requests Diagram

etlab.cz

348 ms

etlab.cz

727 ms

style.css

112 ms

font-awesome.css

41 ms

jss-style.css

224 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 81% of them (47 requests) were addressed to the original Etlab.cz, 7% (4 requests) were made to Fonts.gstatic.com and 5% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Etlab.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 8.0 MB (77%)

Content Size

10.4 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Etlab.cz main page is 10.4 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. 40% of websites need less resources to load. Images take 10.1 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 28.1 kB

  • Original 34.7 kB
  • After minification 25.6 kB
  • After compression 6.6 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 9.1 kB, which is 26% 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 28.1 kB or 81% of the original size.

Image Optimization

-79%

Potential reduce by 8.0 MB

  • Original 10.1 MB
  • After minification 2.2 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. Obviously, ETLab needs image optimization as it can save up to 8.0 MB or 79% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 2.6 kB

  • Original 150.4 kB
  • After minification 150.4 kB
  • After compression 147.8 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

-6%

Potential reduce by 3.3 kB

  • Original 53.3 kB
  • After minification 53.3 kB
  • After compression 50.0 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. Etlab.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 30 (67%)

Requests Now

45

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ETLab. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

etlab.cz

etlab.cz

348 ms

etlab.cz

etlab.cz

727 ms

style.css

style.css

112 ms

font-awesome.css

font-awesome.css

41 ms

jss-style.css

jss-style.css

224 ms

modula.css

modula.css

299 ms

effects.css

effects.css

317 ms

jquery.qtip.min.css

jquery.qtip.min.css

313 ms

default-calendar-grid.min.css

default-calendar-grid.min.css

317 ms

default-calendar-list.min.css

default-calendar-list.min.css

330 ms

jquery.js

jquery.js

473 ms

jquery-migrate.min.js

jquery-migrate.min.js

402 ms

jquery.modula.js

jquery.modula.js

429 ms

bootstrap.min.js

bootstrap.min.js

430 ms

jquery.easing.min.js

jquery.easing.min.js

430 ms

scrolling-nav.js

scrolling-nav.js

443 ms

wp-embed.min.js

wp-embed.min.js

503 ms

style.css

style.css

549 ms

jss-script.min.js

jss-script.min.js

545 ms

page-scroll-to-id.min.js

page-scroll-to-id.min.js

541 ms

jquery.qtip.min.js

jquery.qtip.min.js

664 ms

moment.min.js

moment.min.js

585 ms

moment-timezone-with-data.min.js

moment-timezone-with-data.min.js

711 ms

default-calendar.min.js

default-calendar.min.js

647 ms

imagesloaded.pkgd.min.js

imagesloaded.pkgd.min.js

652 ms

script.js

script.js

655 ms

bootstrap.css

bootstrap.css

597 ms

bootstrap.min.css

bootstrap.min.css

653 ms

scrolling-nav.css

scrolling-nav.css

659 ms

css

css

64 ms

css

css

82 ms

css

css

83 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

127 ms

analytics.js

analytics.js

74 ms

02.png

02.png

1030 ms

logo2.png

logo2.png

124 ms

001-500x500.png

001-500x500.png

116 ms

002-500x500.png

002-500x500.png

203 ms

003-500x500.png

003-500x500.png

210 ms

004-500x500.png

004-500x500.png

220 ms

005-500x500.png

005-500x500.png

228 ms

arrow.png

arrow.png

117 ms

close.png

close.png

117 ms

loading.gif

loading.gif

118 ms

prev.png

prev.png

173 ms

next.png

next.png

214 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aX8.ttf

46 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

46 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVc.ttf

49 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4gaVc.ttf

65 ms

modula-icons.woff

modula-icons.woff

190 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

17 ms

collect

collect

22 ms

001-500x500.png

001-500x500.png

665 ms

002-500x500.png

002-500x500.png

525 ms

003-500x500.png

003-500x500.png

538 ms

004-500x500.png

004-500x500.png

571 ms

005-500x500.png

005-500x500.png

548 ms

Accessibility Review

etlab.cz accessibility score

83

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

etlab.cz 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

High

Page has valid source maps

SEO Factors

etlab.cz SEO score

88

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

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Etlab.cz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Etlab.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

etlab.cz

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