Tools & Wizards About Us
idnes.cz screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

idnes.cz

iDNES.cz – s námi víte víc

Page Load Speed

5.6 sec in total

First Response

392 ms

Resources Loaded

3.8 sec

Page Rendered

1.4 sec

idnes.cz screenshot

About Website

Visit idnes.cz now to see the best up-to-date IDNES content for Czech Republic and also check out these interesting facts you probably never knew about idnes.cz

Nejnovější zprávy z vašeho kraje, České republiky a celého světa.

Visit idnes.cz

Key Findings

We analyzed Idnes.cz page load time and found that the first response time was 392 ms and then it took 5.2 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

idnes.cz performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

5/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value7.3 s

28/100

10%

TBT (Total Blocking Time)

Value3,220 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.049

99/100

15%

TTI (Time to Interactive)

Value17.2 s

4/100

10%

Network Requests Diagram

idnes.cz

392 ms

www.idnes.cz

705 ms

homepage.idnes.cz_desktop

1026 ms

uni.css

521 ms

reklama.css

538 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Idnes.cz, 85% (68 requests) were made to 1gr.cz and 4% (3 requests) were made to Spir.hit.gemius.pl. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source Delivery.r2b2.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 185.0 kB (15%)

Content Size

1.2 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Idnes.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. 60% of websites need less resources to load. Images take 826.3 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 168.5 kB

  • Original 212.0 kB
  • After minification 170.6 kB
  • After compression 43.5 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 41.4 kB, which is 20% 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 168.5 kB or 79% of the original size.

Image Optimization

-1%

Potential reduce by 5.1 kB

  • Original 826.3 kB
  • After minification 821.2 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. IDNES images are well optimized though.

JavaScript Optimization

-8%

Potential reduce by 8.1 kB

  • Original 106.5 kB
  • After minification 106.4 kB
  • After compression 98.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-6%

Potential reduce by 3.4 kB

  • Original 58.6 kB
  • After minification 58.6 kB
  • After compression 55.3 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. Idnes.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 32 (44%)

Requests Now

72

After Optimization

40

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IDNES. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

idnes.cz

idnes.cz

392 ms

www.idnes.cz

www.idnes.cz

705 ms

homepage.idnes.cz_desktop

homepage.idnes.cz_desktop

1026 ms

uni.css

uni.css

521 ms

reklama.css

reklama.css

538 ms

portal.css

portal.css

536 ms

layout.css

layout.css

628 ms

layout2.css

layout2.css

537 ms

uni.js

uni.js

537 ms

cpex-cmp.min.js

cpex-cmp.min.js

164 ms

mereni.js

mereni.js

523 ms

paticka.js

paticka.js

634 ms

2021.js

2021.js

541 ms

recombee-2022.js

recombee-2022.js

540 ms

base.css

base.css

95 ms

xgemius.js

xgemius.js

623 ms

gtm.js

gtm.js

94 ms

free.gif

free.gif

541 ms

INO841c5989dd_HokejMegDeskdeskV2_min.jpg

INO841c5989dd_HokejMegDeskdeskV2_min.jpg

286 ms

KOP91a2799e37_163053_1523691.jpg

KOP91a2799e37_163053_1523691.jpg

248 ms

iw-o.svg

iw-o.svg

170 ms

iw-od.svg

iw-od.svg

187 ms

iw-zd.svg

iw-zd.svg

176 ms

sph2023.png

sph2023.png

250 ms

free.gif

free.gif

249 ms

IHA9195dfff68_042116_8008395.jpg

IHA9195dfff68_042116_8008395.jpg

250 ms

WEI8500de3d18_2024_05_02F155148_01.jpeg

WEI8500de3d18_2024_05_02F155148_01.jpeg

251 ms

porad_rozstrel-square-240.jpg

porad_rozstrel-square-240.jpg

286 ms

porad_kontext-square-240.jpg

porad_kontext-square-240.jpg

286 ms

porad_kafe-square-240.jpg

porad_kafe-square-240.jpg

286 ms

reklama.svg

reklama.svg

278 ms

idnes.svg

idnes.svg

374 ms

login0.svg

login0.svg

375 ms

menu.svg

menu.svg

376 ms

inter-regular.woff

inter-regular.woff

353 ms

inter-semibold.woff

inter-semibold.woff

353 ms

inter-extrabold.woff

inter-extrabold.woff

354 ms

firasans-bold.woff

firasans-bold.woff

433 ms

firasans-semibold.woff

firasans-semibold.woff

433 ms

firasans-regular.woff

firasans-regular.woff

446 ms

obrazek-neni-k-dispozici.png

obrazek-neni-k-dispozici.png

431 ms

mask-map3.png

mask-map3.png

390 ms

arrow2-right.svg

arrow2-right.svg

390 ms

BPE80cfc7_390897195114_4470825333230141440_o.jpg

BPE80cfc7_390897195114_4470825333230141440_o.jpg

471 ms

reklama-bg-min.svg

reklama-bg-min.svg

469 ms

setting.svg

setting.svg

390 ms

VAJ525857acab_Ogubanwo.jpg

VAJ525857acab_Ogubanwo.jpg

391 ms

BIB5378b9c5c5_hzxucifoughljn.jpg

BIB5378b9c5c5_hzxucifoughljn.jpg

485 ms

ZAR7b268c15fc_32UTSIDERS_OPENING_NIGHT.JPG

ZAR7b268c15fc_32UTSIDERS_OPENING_NIGHT.JPG

485 ms

js

js

42 ms

JB827788_ves1.jpg

JB827788_ves1.jpg

410 ms

JAP3e54423b2f_Krytof_01.JPG

JAP3e54423b2f_Krytof_01.JPG

501 ms

more.svg

more.svg

410 ms

CZOaddf2b41c6_203938_3613812.jpg

CZOaddf2b41c6_203938_3613812.jpg

503 ms

ct-1.png

ct-1.png

502 ms

nova.png

nova.png

503 ms

prima.png

prima.png

504 ms

ct-2.png

ct-2.png

504 ms

AMH548da8d770_cvhbjnk.jpg

AMH548da8d770_cvhbjnk.jpg

688 ms

Bf824694.jpeg

Bf824694.jpeg

574 ms

Bf354582.jpeg

Bf354582.jpeg

574 ms

Bf95223.jpg

Bf95223.jpg

573 ms

Bf84315.jpg

Bf84315.jpg

560 ms

ZAR7585f6_md5.jpg

ZAR7585f6_md5.jpg

562 ms

MCE6ffaf93fc5_GettyImages_1181858860.jpg

MCE6ffaf93fc5_GettyImages_1181858860.jpg

651 ms

PET7f6eee8162_profimedia_0865383900.jpg

PET7f6eee8162_profimedia_0865383900.jpg

651 ms

OZ6a32e6614f_Fnz_LwoXgAMJC5v.jpg

OZ6a32e6614f_Fnz_LwoXgAMJC5v.jpg

651 ms

mobile2.svg

mobile2.svg

642 ms

mail2.svg

mail2.svg

557 ms

rss.svg

rss.svg

643 ms

social-facebook.svg

social-facebook.svg

644 ms

social-twitter.svg

social-twitter.svg

649 ms

social-instagram.svg

social-instagram.svg

649 ms

social-tiktok.svg

social-tiktok.svg

615 ms

Cqs7OnsW.js

Cqs7OnsW.js

497 ms

social-telegram.svg

social-telegram.svg

572 ms

arrow-up.svg

arrow-up.svg

644 ms

fpdata.js

fpdata.js

90 ms

lsget.html

lsget.html

569 ms

rexdot.js

rexdot.js

90 ms

Accessibility Review

idnes.cz accessibility score

68

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

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

idnes.cz best practices score

83

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

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

idnes.cz SEO score

84

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

    WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Idnes.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 Idnes.cz main page’s claimed encoding is windows-1250. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

idnes.cz

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