Tools & Wizards About Us

Report Summary

  • 56

    Performance

    Renders faster than
    72% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

zelpage.cz

All news and reports - ŽelPage [www.zelpage.cz]

Page Load Speed

4.4 sec in total

First Response

524 ms

Resources Loaded

3.5 sec

Page Rendered

319 ms

About Website

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

Online magazín o aktuálním dění na železnici. Novinky, články, reportáže z cest a tipy na cesty, jízdní řády, řazení vlaků, simulátory železnice, diskuzní fórum, fotogalerie...

Visit zelpage.cz

Key Findings

We analyzed Zelpage.cz page load time and found that the first response time was 524 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

zelpage.cz performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value10.2 s

9/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value6.5 s

58/100

10%

Network Requests Diagram

zelpage.cz

524 ms

www.zelpage.cz

625 ms

www.zelpage.cz

634 ms

style.css

215 ms

style_for_dev.css

321 ms

Our browser made a total of 73 requests to load all elements on the main page. We found that 93% of them (68 requests) were addressed to the original Zelpage.cz, 3% (2 requests) were made to Ssl.google-analytics.com and 3% (2 requests) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (750 ms) belongs to the original domain Zelpage.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 293.4 kB (30%)

Content Size

964.3 kB

After Optimization

670.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zelpage.cz main page is 964.3 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. 25% of websites need less resources to load. Images take 568.5 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 62.8 kB

  • Original 82.8 kB
  • After minification 80.5 kB
  • After compression 20.1 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. 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 62.8 kB or 76% of the original size.

Image Optimization

-2%

Potential reduce by 14.1 kB

  • Original 568.5 kB
  • After minification 554.4 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. Zel Page images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 215.8 kB

  • Original 306.8 kB
  • After minification 288.4 kB
  • After compression 91.1 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 215.8 kB or 70% of the original size.

CSS Optimization

-14%

Potential reduce by 836 B

  • Original 6.2 kB
  • After minification 6.2 kB
  • After compression 5.3 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. Zelpage.cz needs all CSS files to be minified and compressed as it can save up to 836 B or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (46%)

Requests Now

69

After Optimization

37

  • Images
  • JavaScript
  • CSS

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zel Page. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

zelpage.cz accessibility score

83

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

Low

No form fields have multiple labels

High

Form elements do not have associated labels

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 [lang] attribute

Best Practices

zelpage.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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

zelpage.cz SEO score

54

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

Links do not have descriptive text

High

Document doesn't have a valid hreflang

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zelpage.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it does not match the claimed English language. Our system also found out that Zelpage.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

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