Tools & Wizards About Us
cesky-jazyk.cz screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

cesky-jazyk.cz

Český-jazyk.cz aneb studentský underground

Page Load Speed

23.2 sec in total

First Response

305 ms

Resources Loaded

22.7 sec

Page Rendered

243 ms

cesky-jazyk.cz screenshot

About Website

Welcome to cesky-jazyk.cz homepage info - get ready to check Cesky Jazyk best content for Czech Republic right away, or after learning these important things about cesky-jazyk.cz

Na stránkách ČESKÝ JAZYK Literatura naleznete obsáhlý čtenářský deník, několik úryvků z knížek - tzv. čítanka, u některých spisovatelů stručný životopis a v neposlední řadě databázi slohových prací...

Visit cesky-jazyk.cz

Key Findings

We analyzed Cesky-jazyk.cz page load time and found that the first response time was 305 ms and then it took 22.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

cesky-jazyk.cz performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value15.6 s

0/100

25%

SI (Speed Index)

Value18.9 s

0/100

10%

TBT (Total Blocking Time)

Value6,720 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.066

97/100

15%

TTI (Time to Interactive)

Value40.9 s

0/100

10%

Network Requests Diagram

cesky-jazyk.cz

305 ms

cesky-jazyk.cz

403 ms

199 ms

284 ms

style.css.php

216 ms

Our browser made a total of 116 requests to load all elements on the main page. We found that 47% of them (55 requests) were addressed to the original Cesky-jazyk.cz, 3% (4 requests) were made to Googletagmanager.com and 3% (4 requests) were made to Cdn.performax.cz. The less responsive or slowest element that took the longest time to load (20.3 sec) relates to the external source Toplist.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 223.5 kB (23%)

Content Size

992.2 kB

After Optimization

768.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cesky-jazyk.cz main page is 992.2 kB. 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. Javascripts take 532.4 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 77.9 kB

  • Original 102.5 kB
  • After minification 90.4 kB
  • After compression 24.6 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 12.1 kB, which is 12% 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 77.9 kB or 76% of the original size.

Image Optimization

-2%

Potential reduce by 5.9 kB

  • Original 353.5 kB
  • After minification 347.6 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. Cesky Jazyk images are well optimized though.

JavaScript Optimization

-26%

Potential reduce by 138.6 kB

  • Original 532.4 kB
  • After minification 532.4 kB
  • After compression 393.8 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 138.6 kB or 26% of the original size.

CSS Optimization

-30%

Potential reduce by 1.1 kB

  • Original 3.8 kB
  • After minification 3.8 kB
  • After compression 2.7 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. Cesky-jazyk.cz needs all CSS files to be minified and compressed as it can save up to 1.1 kB or 30% of the original size.

Requests Breakdown

Number of requests can be reduced by 72 (71%)

Requests Now

101

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 101 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cesky Jazyk. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 44 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

cesky-jazyk.cz

cesky-jazyk.cz

305 ms

cesky-jazyk.cz

cesky-jazyk.cz

403 ms

199 ms

284 ms

style.css.php

style.css.php

216 ms

easy-autocomplete.css

easy-autocomplete.css

299 ms

jquery-1.8.3.min.js

jquery-1.8.3.min.js

393 ms

jFav_v1.0.js

jFav_v1.0.js

294 ms

jquery.tooltip.pack.js

jquery.tooltip.pack.js

295 ms

jquery.jqEasyCharCounter.js

jquery.jqEasyCharCounter.js

295 ms

cesky-jazyk-pack.js

cesky-jazyk-pack.js

325 ms

remove-fbclid.js

remove-fbclid.js

405 ms

jquery.easy-autocomplete.min.js

jquery.easy-autocomplete.min.js

403 ms

functions.php

functions.php

405 ms

cpex-cmp.min.js

cpex-cmp.min.js

444 ms

adsbygoogle.js

adsbygoogle.js

113 ms

pub-8533343497038547

pub-8533343497038547

64 ms

sdk.js

sdk.js

22 ms

cse-search-box-cs.js

cse-search-box-cs.js

403 ms

opera-pack.js

opera-pack.js

424 ms

jquery-pack-cs-2020.js

jquery-pack-cs-2020.js

524 ms

gtm.js

gtm.js

146 ms

gtm.js

gtm.js

181 ms

pub-8533343497038547

pub-8533343497038547

77 ms

hledej.gif

hledej.gif

116 ms

button-hledej-cs.png

button-hledej-cs.png

116 ms

ai.php

ai.php

355 ms

lg.php

lg.php

140 ms

fcb-vyhorele.png

fcb-vyhorele.png

116 ms

impression-media.png

impression-media.png

207 ms

show_ads_impl.js

show_ads_impl.js

312 ms

pozadi-top.png

pozadi-top.png

176 ms

sdk.js

sdk.js

22 ms

pozadi-pruh_1920.png

pozadi-pruh_1920.png

155 ms

pozadi_1920.png

pozadi_1920.png

548 ms

logo-cs.png

logo-cs.png

155 ms

pridat-cs.gif

pridat-cs.gif

259 ms

vyhledavani.gif

vyhledavani.gif

260 ms

menu_repared.png

menu_repared.png

259 ms

roh-round-dark.gif

roh-round-dark.gif

259 ms

hledas-neco-cs.jpg

hledas-neco-cs.jpg

453 ms

nadpis_bottom.gif

nadpis_bottom.gif

378 ms

nadpis_top.gif

nadpis_top.gif

378 ms

smallbook.gif

smallbook.gif

377 ms

roh-round-light.gif

roh-round-light.gif

335 ms

kalendarium_green_bottom.gif

kalendarium_green_bottom.gif

435 ms

kalendarium_green_top.gif

kalendarium_green_top.gif

435 ms

kalendarium_black_bottom.gif

kalendarium_black_bottom.gif

435 ms

kalendarium_black_top.gif

kalendarium_black_top.gif

434 ms

pohar.png

pohar.png

482 ms

zamitnuto-cs.png

zamitnuto-cs.png

504 ms

brasna.png

brasna.png

503 ms

strankovani.gif

strankovani.gif

504 ms

menu_right.gif

menu_right.gif

505 ms

prace-dne-top-cs.gif

prace-dne-top-cs.gif

566 ms

prace-dne-bottom.gif

prace-dne-bottom.gif

582 ms

prace-dne-cist-cs.gif

prace-dne-cist-cs.gif

606 ms

googlelogo_lightgrey_46x16dp.png

googlelogo_lightgrey_46x16dp.png

36 ms

soutez-top-cs.png

soutez-top-cs.png

570 ms

soutez-main.png

soutez-main.png

584 ms

prvni-mista.png

prvni-mista.png

584 ms

js

js

57 ms

js

js

121 ms

containr.js

containr.js

238 ms

tag.js

tag.js

205 ms

1432.js

1432.js

239 ms

fixed_desktop

fixed_desktop

831 ms

cesky_jazyk_cz

cesky_jazyk_cz

753 ms

adsbygoogle.js

adsbygoogle.js

221 ms

odrazka-light.gif

odrazka-light.gif

602 ms

pozadi-paticka.png

pozadi-paticka.png

617 ms

paticka-cs.jpg

paticka-cs.jpg

730 ms

xgemius.js

xgemius.js

623 ms

dot.asp

dot.asp

20324 ms

ti.js

ti.js

240 ms

zrt_lookup.html

zrt_lookup.html

78 ms

ads

ads

409 ms

learn

learn

167 ms

ads

ads

487 ms

imPrebidGlobalVariables.min.js

imPrebidGlobalVariables.min.js

34 ms

im.cesky-jazyk.cz

im.cesky-jazyk.cz

745 ms

ads

ads

434 ms

p

p

115 ms

a3tKR2CYer35Lqadbi-bpO.js

a3tKR2CYer35Lqadbi-bpO.js

38 ms

HBsetup_cesky-jazykcz_Cesky_jazyk_cz___r2b2_v_dalsi_aukci_2024_04_22_1303.min.js

HBsetup_cesky-jazykcz_Cesky_jazyk_cz___r2b2_v_dalsi_aukci_2024_04_22_1303.min.js

188 ms

v2

v2

99 ms

31 ms

99 ms

generic

generic

14 ms

generic

generic

3 ms

9054488221700705744

9054488221700705744

3 ms

generic

generic

3 ms

mapuid

mapuid

84 ms

405716.gif

405716.gif

125 ms

fpdata.js

fpdata.js

136 ms

v2

v2

15 ms

lsget.html

lsget.html

1465 ms

style-print.css

style-print.css

114 ms

loader.js

loader.js

806 ms

bundle.5c38e8e7ce26bb395ce3.js

bundle.5c38e8e7ce26bb395ce3.js

575 ms

pixel

pixel

137 ms

sync

sync

47 ms

1.js

1.js

107 ms

2.js

2.js

214 ms

flexo.js

flexo.js

377 ms

rexdot.js

rexdot.js

87 ms

v2

v2

60 ms

dpx

dpx

28 ms

hbpix

hbpix

68 ms

72 ms

lotame-sync.html

lotame-sync.html

47 ms

spacer.gif

spacer.gif

13 ms

sync.min.js

sync.min.js

12 ms

map

map

81 ms

pixel

pixel

68 ms

sync

sync

35 ms

Accessibility Review

cesky-jazyk.cz accessibility score

76

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.

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

<frame> or <iframe> elements do not have a title

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

cesky-jazyk.cz best practices score

67

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

Missing source maps for large first-party JavaScript

SEO Factors

cesky-jazyk.cz SEO score

73

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 doesn't use 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 Cesky-jazyk.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 Cesky-jazyk.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

cesky-jazyk.cz

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