Tools & Wizards About Us
cesky-jazyk.cz screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    38% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 74

    SEO

    Google-friendlier than
    32% of websites

cesky-jazyk.cz

Český-jazyk.cz aneb studentský underground

Page Load Speed

6.7 sec in total

First Response

357 ms

Resources Loaded

4.1 sec

Page Rendered

2.3 sec

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 357 ms and then it took 6.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

cesky-jazyk.cz performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value10.9 s

0/100

25%

SI (Speed Index)

Value8.9 s

15/100

10%

TBT (Total Blocking Time)

Value2,280 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.069

96/100

15%

TTI (Time to Interactive)

Value22.3 s

1/100

10%

Network Requests Diagram

cesky-jazyk.cz

357 ms

314 ms

style.css.php

337 ms

style-bbt.php

233 ms

mootools-1.2.3-core.js

358 ms

Our browser made a total of 101 requests to load all elements on the main page. We found that 53% of them (54 requests) were addressed to the original Cesky-jazyk.cz, 5% (5 requests) were made to Pagead2.googlesyndication.com and 5% (5 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Cesky-jazyk.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 450.9 kB (37%)

Content Size

1.2 MB

After Optimization

775.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cesky-jazyk.cz main page is 1.2 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. 65% of websites need less resources to load. Javascripts take 634.8 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 46.9 kB

  • Original 59.2 kB
  • After minification 49.1 kB
  • After compression 12.2 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. This page needs HTML code to be minified as it can gain 10.0 kB, which is 17% 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 46.9 kB or 79% of the original size.

Image Optimization

-1%

Potential reduce by 3.7 kB

  • Original 523.9 kB
  • After minification 520.2 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

-62%

Potential reduce by 394.4 kB

  • Original 634.8 kB
  • After minification 633.0 kB
  • After compression 240.4 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 394.4 kB or 62% of the original size.

CSS Optimization

-74%

Potential reduce by 5.9 kB

  • Original 8.0 kB
  • After minification 6.2 kB
  • After compression 2.1 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. Cesky-jazyk.cz needs all CSS files to be minified and compressed as it can save up to 5.9 kB or 74% of the original size.

Requests Breakdown

Number of requests can be reduced by 60 (65%)

Requests Now

93

After Optimization

33

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 93 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 32 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

cesky-jazyk.cz

cesky-jazyk.cz

357 ms

314 ms

style.css.php

style.css.php

337 ms

style-bbt.php

style-bbt.php

233 ms

mootools-1.2.3-core.js

mootools-1.2.3-core.js

358 ms

autocompleter-pack.js

autocompleter-pack.js

234 ms

jquery.own.js

jquery.own.js

347 ms

jFav_v1.0.js

jFav_v1.0.js

238 ms

jquery.tooltip.pack.js

jquery.tooltip.pack.js

340 ms

jquery.jqEasyCharCounter.js

jquery.jqEasyCharCounter.js

346 ms

cesky-jazyk-pack.js

cesky-jazyk-pack.js

346 ms

functions.php

functions.php

498 ms

brand

brand

21 ms

show_ads.js

show_ads.js

19 ms

cz.js

cz.js

118 ms

opera-pack.js

opera-pack.js

540 ms

jquery-pack.js

jquery-pack.js

540 ms

code.js

code.js

489 ms

plusone.js

plusone.js

721 ms

brand

brand

133 ms

analytics.js

analytics.js

51 ms

ti.js

ti.js

37 ms

pozadi-pruh_1920.png

pozadi-pruh_1920.png

217 ms

pozadi_1920.png

pozadi_1920.png

1064 ms

cjl-logo.png

cjl-logo.png

209 ms

pridat.gif

pridat.gif

210 ms

vyhledavani.gif

vyhledavani.gif

208 ms

hledej.gif

hledej.gif

209 ms

menu_repared.png

menu_repared.png

688 ms

roh-round-dark.gif

roh-round-dark.gif

687 ms

hledas-neco.jpg

hledas-neco.jpg

690 ms

nadpis_bottom.gif

nadpis_bottom.gif

687 ms

nadpis_top.gif

nadpis_top.gif

687 ms

smallbook.gif

smallbook.gif

688 ms

roh-round-light.gif

roh-round-light.gif

688 ms

kalendarium_green_bottom.gif

kalendarium_green_bottom.gif

688 ms

kalendarium_green_top.gif

kalendarium_green_top.gif

687 ms

kalendarium_black_bottom.gif

kalendarium_black_bottom.gif

683 ms

kalendarium_black_top.gif

kalendarium_black_top.gif

680 ms

button-hledej.png

button-hledej.png

681 ms

lg.php

lg.php

681 ms

ai.php

ai.php

1029 ms

lg.php

lg.php

744 ms

ai.php

ai.php

1049 ms

lg.php

lg.php

1003 ms

fcb-vyhorele.png

fcb-vyhorele.png

741 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

148 ms

vscht_2016_01.html

vscht_2016_01.html

1818 ms

linkid.js

linkid.js

116 ms

p

p

107 ms

a3tKR2CYer35Lqadbi-bpO.js

a3tKR2CYer35Lqadbi-bpO.js

181 ms

zamitnuto.png

zamitnuto.png

861 ms

pohar.png

pohar.png

862 ms

miss.png

miss.png

862 ms

strankovani.gif

strankovani.gif

863 ms

menu_right.gif

menu_right.gif

863 ms

prace-dne-top.gif

prace-dne-top.gif

864 ms

prace-dne-bottom.gif

prace-dne-bottom.gif

1079 ms

prace-dne-cist.gif

prace-dne-cist.gif

1078 ms

collect

collect

64 ms

ca-pub-8533343497038547.js

ca-pub-8533343497038547.js

169 ms

zrt_lookup.html

zrt_lookup.html

400 ms

show_ads_impl.js

show_ads_impl.js

142 ms

collect

collect

403 ms

soutez-top.png

soutez-top.png

905 ms

soutez-main.png

soutez-main.png

905 ms

prvni-mista.png

prvni-mista.png

904 ms

odrazka-light.gif

odrazka-light.gif

1191 ms

pozadi-paticka.png

pozadi-paticka.png

1191 ms

paticka.jpg

paticka.jpg

1225 ms

v2

v2

298 ms

dot.asp

dot.asp

294 ms

ads

ads

420 ms

dpx

dpx

32 ms

osd.js

osd.js

30 ms

ads

ads

293 ms

adj

adj

245 ms

beacon

beacon

289 ms

runtime.js

runtime.js

268 ms

xgemius.js

xgemius.js

458 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

175 ms

bbt3.js

bbt3.js

450 ms

xrefid.xgi

xrefid.xgi

288 ms

adj

adj

307 ms

9-_300_250.jpg

9-_300_250.jpg

273 ms

lidar.js

lidar.js

271 ms

sbhK2lTE.js

sbhK2lTE.js

272 ms

beacon

beacon

271 ms

7-_300_250.jpg

7-_300_250.jpg

128 ms

bbt3.js

bbt3.js

469 ms

pixel

pixel

109 ms

fpdata.js

fpdata.js

146 ms

52154.gif

52154.gif

62 ms

pixel

pixel

67 ms

style-print.css

style-print.css

208 ms

pixel

pixel

74 ms

pixel

pixel

70 ms

cTrvNaRi.html

cTrvNaRi.html

45 ms

cTrvNaRi.html

cTrvNaRi.html

35 ms

pixel

pixel

126 ms

lsget.html

lsget.html

296 ms

Accessibility Review

cesky-jazyk.cz accessibility score

84

Accessibility Issues

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

58

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

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

cesky-jazyk.cz SEO score

74

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: