Tools & Wizards About Us
wallstreetenglish.cz screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    59% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

wallstreetenglish.cz

Jazykové kurzy, přípravné kurzy angličtiny - Wall Street English

Page Load Speed

5.5 sec in total

First Response

760 ms

Resources Loaded

4.2 sec

Page Rendered

585 ms

wallstreetenglish.cz screenshot

About Website

Click here to check amazing Wall Street English content for Czech Republic. Otherwise, check out these important facts you probably never knew about wallstreetenglish.cz

Největší jazyková škola angličtiny na světě. Kurzy angličtiny přímo v centru Prahy. Poskytujeme individuální výuku angličtiny jedinečnou metodou.

Visit wallstreetenglish.cz

Key Findings

We analyzed Wallstreetenglish.cz page load time and found that the first response time was 760 ms and then it took 4.7 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

wallstreetenglish.cz performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

60/100

10%

LCP (Largest Contentful Paint)

Value8.6 s

1/100

25%

SI (Speed Index)

Value5.6 s

52/100

10%

TBT (Total Blocking Time)

Value940 ms

30/100

30%

CLS (Cumulative Layout Shift)

Value0.038

100/100

15%

TTI (Time to Interactive)

Value9.3 s

31/100

10%

Network Requests Diagram

wallstreetenglish.cz

760 ms

bootstrap.min.css

60 ms

common.min.css

123 ms

famfamfam-flags.css

228 ms

css

76 ms

Our browser made a total of 104 requests to load all elements on the main page. We found that 42% of them (44 requests) were addressed to the original Wallstreetenglish.cz, 21% (22 requests) were made to Maps.google.com and 7% (7 requests) were made to Maps.gstatic.com. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Wallstreetenglish.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 810.1 kB (39%)

Content Size

2.1 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Wallstreetenglish.cz main page is 2.1 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 979.9 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 62.6 kB

  • Original 79.3 kB
  • After minification 75.3 kB
  • After compression 16.7 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 62.6 kB or 79% of the original size.

Image Optimization

-1%

Potential reduce by 9.1 kB

  • Original 979.9 kB
  • After minification 970.8 kB

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. Wall Street English images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 561.0 kB

  • Original 807.1 kB
  • After minification 802.0 kB
  • After compression 246.1 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 561.0 kB or 70% of the original size.

CSS Optimization

-83%

Potential reduce by 177.4 kB

  • Original 213.4 kB
  • After minification 210.2 kB
  • After compression 36.1 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. Wallstreetenglish.cz needs all CSS files to be minified and compressed as it can save up to 177.4 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (45%)

Requests Now

91

After Optimization

50

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 91 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wall Street English. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

wallstreetenglish.cz

wallstreetenglish.cz

760 ms

bootstrap.min.css

bootstrap.min.css

60 ms

common.min.css

common.min.css

123 ms

famfamfam-flags.css

famfamfam-flags.css

228 ms

css

css

76 ms

css_browser_selector.js

css_browser_selector.js

239 ms

font-awesome.min.css

font-awesome.min.css

76 ms

jquery-2.1.4.min.js

jquery-2.1.4.min.js

34 ms

prague-footer.js

prague-footer.js

617 ms

.js

.js

961 ms

jquery.validate.min.js

jquery.validate.min.js

51 ms

jquery.cookie.js

jquery.cookie.js

1088 ms

libs.min.js

libs.min.js

1810 ms

bootstrap.min.js

bootstrap.min.js

66 ms

labels.js

labels.js

493 ms

jquery.shuffleLetters.js

jquery.shuffleLetters.js

373 ms

js

js

60 ms

markerwithlabel_packed.js

markerwithlabel_packed.js

62 ms

plusone.js

plusone.js

99 ms

wp-embed.min.js

wp-embed.min.js

485 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

317 ms

wsecz_logo.svg

wsecz_logo.svg

431 ms

encounter5.jpg

encounter5.jpg

809 ms

first_lesson_room.jpg

first_lesson_room.jpg

2244 ms

1.jpg

1.jpg

547 ms

2.jpg

2.jpg

663 ms

3.jpg

3.jpg

780 ms

4.jpg

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896 ms

5.jpg

5.jpg

2654 ms

6.jpg

6.jpg

920 ms

7.jpg

7.jpg

1051 ms

emma.jpg

emma.jpg

1011 ms

jessie.jpg

jessie.jpg

1031 ms

jen.jpg

jen.jpg

1127 ms

cambridge-preparation-centre.svg

cambridge-preparation-centre.svg

1142 ms

toefl-ibt.svg

toefl-ibt.svg

1167 ms

bc.png

bc.png

1242 ms

amchan.png

amchan.png

1251 ms

bcc.png

bcc.png

1399 ms

ajsa.svg

ajsa.svg

1358 ms

unyp.svg

unyp.svg

1362 ms

iso-9001.svg

iso-9001.svg

1473 ms

alice.jpg

alice.jpg

1477 ms

zuzana.jpg

zuzana.jpg

1516 ms

hana.jpg

hana.jpg

1821 ms

jana.jpg

jana.jpg

1819 ms

monika.jpg

monika.jpg

1823 ms

pearson.svg

pearson.svg

1822 ms

gtm.js

gtm.js

97 ms

recepce.jpg

recepce.jpg

1986 ms

OFgyER5uFw7Cy-F01PjbVg.woff

OFgyER5uFw7Cy-F01PjbVg.woff

47 ms

-1odZCVpKpOs9pNLq607fj8E0i7KZn-EPnyo3HZu7kw.woff

-1odZCVpKpOs9pNLq607fj8E0i7KZn-EPnyo3HZu7kw.woff

48 ms

fSUtikcZd7PHZK0t2hzTeT8E0i7KZn-EPnyo3HZu7kw.woff

fSUtikcZd7PHZK0t2hzTeT8E0i7KZn-EPnyo3HZu7kw.woff

47 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

26 ms

conversion_async.js

conversion_async.js

52 ms

analytics.js

analytics.js

50 ms

hotjar-53701.js

hotjar-53701.js

108 ms

famfamfam-flags.png

famfamfam-flags.png

1719 ms

linkid.js

linkid.js

10 ms

55 ms

collect

collect

11 ms

collect

collect

77 ms

phone-ico.png

phone-ico.png

1578 ms

mail-ico.png

mail-ico.png

1579 ms

modules-043c1e6abe660c48857202e419ff9d8a.js

modules-043c1e6abe660c48857202e419ff9d8a.js

36 ms

53 ms

ga-audiences

ga-audiences

20 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

15 ms

visit-data

visit-data

217 ms

common.js

common.js

7 ms

map.js

map.js

8 ms

drag_cross_67_16.png

drag_cross_67_16.png

65 ms

util.js

util.js

63 ms

marker.js

marker.js

62 ms

overlay.js

overlay.js

63 ms

onion.js

onion.js

26 ms

openhand_8_8.cur

openhand_8_8.cur

44 ms

ViewportInfoService.GetViewportInfo

ViewportInfoService.GetViewportInfo

147 ms

stats.js

stats.js

36 ms

controls.js

controls.js

30 ms

transparent.png

transparent.png

28 ms

css

css

31 ms

google4.png

google4.png

40 ms

mapcnt6.png

mapcnt6.png

33 ms

sv5.png

sv5.png

31 ms

gmap-icon-bg.png

gmap-icon-bg.png

117 ms

tmapctrl.png

tmapctrl.png

21 ms

2UX7WLTfW3W8TclTUvlFyQ.woff

2UX7WLTfW3W8TclTUvlFyQ.woff

14 ms

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

14 ms

Hgo13k-tfSpn0qi1SFdUfT8E0i7KZn-EPnyo3HZu7kw.woff

Hgo13k-tfSpn0qi1SFdUfT8E0i7KZn-EPnyo3HZu7kw.woff

14 ms

d-6IYplOFocCacKzxwXSOD8E0i7KZn-EPnyo3HZu7kw.woff

d-6IYplOFocCacKzxwXSOD8E0i7KZn-EPnyo3HZu7kw.woff

14 ms

vt

vt

77 ms

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84 ms

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74 ms

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70 ms

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77 ms

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103 ms

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119 ms

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159 ms

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126 ms

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144 ms

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156 ms

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167 ms

vt

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186 ms

Accessibility Review

wallstreetenglish.cz accessibility score

71

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

[id] attributes on active, focusable elements are not unique

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 valid value for its [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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

wallstreetenglish.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

High

Page has valid source maps

SEO Factors

wallstreetenglish.cz SEO score

83

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

    CS

  • Language Claimed

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Wallstreetenglish.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 Wallstreetenglish.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

wallstreetenglish.cz

Open Graph description is not detected on the main page of Wall Street English. 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: