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zuke-dukes.com screenshot

Report Summary

  • 97

    Performance

    Renders faster than
    95% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

zuke-dukes.com

Colle System Chess Players Community Portal

Page Load Speed

737 ms in total

First Response

182 ms

Resources Loaded

443 ms

Page Rendered

112 ms

zuke-dukes.com screenshot

About Website

Click here to check amazing Zuke Dukes content. Otherwise, check out these important facts you probably never knew about zuke-dukes.com

A nexus for Colle System players. Both variations (Koltanowski and Zukertort) of the Colle are supported with links to game databases and a community forum.

Visit zuke-dukes.com

Key Findings

We analyzed Zuke-dukes.com page load time and found that the first response time was 182 ms and then it took 555 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

zuke-dukes.com performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

89/100

25%

SI (Speed Index)

Value0.8 s

100/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.9 s

100/100

10%

Network Requests Diagram

zuke-dukes.com

182 ms

styles.css

52 ms

CK.jpg

195 ms

headers.jpg

230 ms

bullet_active.gif

140 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that all of those requests were addressed to Zuke-dukes.com and no external sources were called. The less responsive or slowest element that took the longest time to load (230 ms) belongs to the original domain Zuke-dukes.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 25.4 kB (22%)

Content Size

116.0 kB

After Optimization

90.5 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Zuke-dukes.com main page is 116.0 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. Only 5% of websites need less resources to load. Images take 105.5 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 6.8 kB

  • Original 8.5 kB
  • After minification 8.5 kB
  • After compression 1.6 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 6.8 kB or 81% of the original size.

Image Optimization

-16%

Potential reduce by 17.0 kB

  • Original 105.5 kB
  • After minification 88.5 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. Obviously, Zuke Dukes needs image optimization as it can save up to 17.0 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-80%

Potential reduce by 1.6 kB

  • Original 2.0 kB
  • After minification 1.6 kB
  • After compression 399 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. Zuke-dukes.com needs all CSS files to be minified and compressed as it can save up to 1.6 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (58%)

Requests Now

12

After Optimization

5

  • Images
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zuke Dukes. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

zuke-dukes.com

zuke-dukes.com

182 ms

styles.css

styles.css

52 ms

CK.jpg

CK.jpg

195 ms

headers.jpg

headers.jpg

230 ms

bullet_active.gif

bullet_active.gif

140 ms

bullet.gif

bullet.gif

133 ms

content_rightline.gif

content_rightline.gif

150 ms

sp.gif

sp.gif

134 ms

bmenu_separator.gif

bmenu_separator.gif

200 ms

logo-bg.gif

logo-bg.gif

143 ms

logo-bg-1.gif

logo-bg-1.gif

153 ms

logo-bg4.gif

logo-bg4.gif

144 ms

01.gif

01.gif

209 ms

Accessibility Review

zuke-dukes.com accessibility score

56

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

Links do not have a discernible name

Best Practices

zuke-dukes.com best practices score

67

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

SEO Factors

zuke-dukes.com SEO score

69

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

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zuke-dukes.com can be misinterpreted by Google and other search engines. Our service has detected that English 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 Zuke-dukes.com 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

zuke-dukes.com

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