Tools & Wizards About Us

Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

plzensketramvaje.cz

Plzeňské tramvaje - www.plzensketramvaje.cz - Pilsner trams - tram fans website

Page Load Speed

21.7 sec in total

First Response

415 ms

Resources Loaded

20.9 sec

Page Rendered

381 ms

About Website

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

Plzeňské tramvaje - aktuální události a zajímavosti z plzeňského tramvajové provozu, popisy typů vozů a zejména mnoho aktuálních fotografií plzeňských tramvají (nechybí ani výluky, vykolejení či povod...

Visit plzensketramvaje.cz

Key Findings

We analyzed Plzensketramvaje.cz page load time and found that the first response time was 415 ms and then it took 21.2 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

plzensketramvaje.cz performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.0 s

100/100

10%

LCP (Largest Contentful Paint)

Value7.8 s

3/100

25%

SI (Speed Index)

Value4.4 s

74/100

10%

TBT (Total Blocking Time)

Value510 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0.105

88/100

15%

TTI (Time to Interactive)

Value8.0 s

42/100

10%

Network Requests Diagram

plzensketramvaje.cz

415 ms

tram.css

98 ms

prototype.js

296 ms

scriptaculous.js

194 ms

lightbox.js

195 ms

Our browser made a total of 106 requests to load all elements on the main page. We found that 76% of them (81 requests) were addressed to the original Plzensketramvaje.cz, 9% (10 requests) were made to Static.xx.fbcdn.net and 4% (4 requests) were made to In-pocasi.cz. The less responsive or slowest element that took the longest time to load (20 sec) relates to the external source Toplist.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 54.5 kB (7%)

Content Size

812.3 kB

After Optimization

757.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Plzensketramvaje.cz main page is 812.3 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. 65% of websites need less resources to load. Images take 702.2 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 41.6 kB

  • Original 54.8 kB
  • After minification 54.3 kB
  • After compression 13.2 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. 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 41.6 kB or 76% of the original size.

Image Optimization

-0%

Potential reduce by 1.2 kB

  • Original 702.2 kB
  • After minification 700.9 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. Plzenske Tramvaje images are well optimized though.

JavaScript Optimization

-21%

Potential reduce by 11.4 kB

  • Original 54.4 kB
  • After minification 54.1 kB
  • After compression 43.0 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 11.4 kB or 21% of the original size.

CSS Optimization

-17%

Potential reduce by 169 B

  • Original 997 B
  • After minification 997 B
  • After compression 828 B

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. Plzensketramvaje.cz needs all CSS files to be minified and compressed as it can save up to 169 B or 17% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (15%)

Requests Now

103

After Optimization

88

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 103 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Plzenske Tramvaje. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

plzensketramvaje.cz accessibility score

59

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.

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

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Best Practices

plzensketramvaje.cz best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

High

Browser errors were logged to the console

SEO Factors

plzensketramvaje.cz SEO score

67

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

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Plzensketramvaje.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Plzensketramvaje.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

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