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dpo.cz screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

dpo.cz

Dopravní podnik Ostrava a.s.

Page Load Speed

4.7 sec in total

First Response

295 ms

Resources Loaded

4.1 sec

Page Rendered

262 ms

dpo.cz screenshot

About Website

Click here to check amazing Dpo content for Czech Republic. Otherwise, check out these important facts you probably never knew about dpo.cz

Dopravní podnik Ostrava a.s. - městská hromadná doprava v Ostravě

Visit dpo.cz

Key Findings

We analyzed Dpo.cz page load time and found that the first response time was 295 ms and then it took 4.4 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

dpo.cz performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

10/100

10%

LCP (Largest Contentful Paint)

Value11.7 s

0/100

25%

SI (Speed Index)

Value9.0 s

14/100

10%

TBT (Total Blocking Time)

Value1,020 ms

26/100

30%

CLS (Cumulative Layout Shift)

Value0.217

57/100

15%

TTI (Time to Interactive)

Value9.4 s

31/100

10%

Network Requests Diagram

dpo.cz

295 ms

www.dpo.cz

1115 ms

uc.js

23 ms

css-dfc40-09649.css

115 ms

css-92759-26200.css

219 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 89% of them (66 requests) were addressed to the original Dpo.cz, 3% (2 requests) were made to Consent.cookiebot.com and 3% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Dpo.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 340.7 kB (18%)

Content Size

1.9 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dpo.cz main page is 1.9 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. 55% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 95.4 kB

  • Original 110.5 kB
  • After minification 98.3 kB
  • After compression 15.1 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 11% 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 95.4 kB or 86% of the original size.

Image Optimization

-4%

Potential reduce by 56.5 kB

  • Original 1.3 MB
  • After minification 1.3 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. Dpo images are well optimized though.

JavaScript Optimization

-50%

Potential reduce by 187.5 kB

  • Original 373.3 kB
  • After minification 373.3 kB
  • After compression 185.8 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 187.5 kB or 50% of the original size.

CSS Optimization

-2%

Potential reduce by 1.2 kB

  • Original 61.6 kB
  • After minification 61.6 kB
  • After compression 60.4 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. Dpo.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 27 (38%)

Requests Now

71

After Optimization

44

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 71 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dpo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

dpo.cz

dpo.cz

295 ms

www.dpo.cz

www.dpo.cz

1115 ms

uc.js

uc.js

23 ms

css-dfc40-09649.css

css-dfc40-09649.css

115 ms

css-92759-26200.css

css-92759-26200.css

219 ms

css

css

35 ms

css-a3fd9-58384.css

css-a3fd9-58384.css

463 ms

icon

icon

53 ms

css-089d3-15385.css

css-089d3-15385.css

476 ms

jquery.min.js

jquery.min.js

590 ms

jquery-noconflict.js

jquery-noconflict.js

505 ms

jquery-migrate.min.js

jquery-migrate.min.js

515 ms

caption.js

caption.js

525 ms

bootstrap.js

bootstrap.js

709 ms

jcemediabox.js

jcemediabox.js

721 ms

jquery.tap.min.js

jquery.tap.min.js

636 ms

script.js

script.js

642 ms

menu.js

menu.js

648 ms

owl.carousel.min.js

owl.carousel.min.js

693 ms

jquery.paroller.min.js

jquery.paroller.min.js

735 ms

script.js

script.js

743 ms

nav-collapse.js

nav-collapse.js

746 ms

mootools-core.js

mootools-core.js

804 ms

core.js

core.js

814 ms

jabuilder.js

jabuilder.js

824 ms

script.js

script.js

943 ms

script.js

script.js

847 ms

acymailing_module.js

acymailing_module.js

848 ms

gtm.js

gtm.js

58 ms

uc.js

uc.js

16 ms

system.css

system.css

689 ms

en.png

en.png

196 ms

ostrava.png

ostrava.png

197 ms

logo-dpo.png

logo-dpo.png

196 ms

search.png

search.png

196 ms

0015-MSvH2024.jpg

0015-MSvH2024.jpg

475 ms

0020-majales.jpg

0020-majales.jpg

380 ms

0025-vlk-namesti-republiky.jpg

0025-vlk-namesti-republiky.jpg

393 ms

0030-130-let-mhd.jpg

0030-130-let-mhd.jpg

392 ms

0045-vlk-poruba-u-nemocnice.jpg

0045-vlk-poruba-u-nemocnice.jpg

391 ms

0048-prvniodiska.jpg

0048-prvniodiska.jpg

393 ms

ctrl-btns.png

ctrl-btns.png

484 ms

logo-moje-dpo.png

logo-moje-dpo.png

493 ms

ico-app-store.png

ico-app-store.png

494 ms

ico-g-play.png

ico-g-play.png

491 ms

ico-1.png

ico-1.png

494 ms

ico-2-poloha-vozu.png

ico-2-poloha-vozu.png

578 ms

ico-2xx.png

ico-2xx.png

585 ms

ico-4-coool.png

ico-4-coool.png

591 ms

ico-6.png

ico-6.png

593 ms

ico-3.png

ico-3.png

591 ms

front-informujeme-2022.jpg

front-informujeme-2022.jpg

594 ms

tz-2024-04-24-u.jpg

tz-2024-04-24-u.jpg

678 ms

tz-2024-04-22-u.jpg

tz-2024-04-22-u.jpg

686 ms

prodej-2024-04-18-u.jpg

prodej-2024-04-18-u.jpg

690 ms

2024-04-12-u.jpg

2024-04-12-u.jpg

694 ms

tz-2024-04-10-u.jpg

tz-2024-04-10-u.jpg

693 ms

front-posilujeme-2022.jpg

front-posilujeme-2022.jpg

692 ms

front-vyluky-2022.jpg

front-vyluky-2022.jpg

778 ms

front-zmeny-2022.jpg

front-zmeny-2022.jpg

787 ms

fajn-ova.png

fajn-ova.png

788 ms

logo-sdp.png

logo-sdp.png

790 ms

bezpe-ova.png

bezpe-ova.png

791 ms

zdrava-ova.png

zdrava-ova.png

791 ms

c-cestuj.png

c-cestuj.png

864 ms

c-sluzby.png

c-sluzby.png

873 ms

c-prace.png

c-prace.png

874 ms

font

font

26 ms

font

font

27 ms

t3logo-small-light.png

t3logo-small-light.png

147 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

701 ms

popup.html

popup.html

718 ms

tooltip.html

tooltip.html

717 ms

slideloading.gif

slideloading.gif

784 ms

Accessibility Review

dpo.cz accessibility score

68

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

dpo.cz best practices score

75

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

SEO Factors

dpo.cz SEO score

91

Search Engine Optimization Advices

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 Dpo.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 Dpo.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

dpo.cz

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