Report Summary

  • 87

    Performance

    Renders faster than
    90% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

cyber-dojo.org

cyber-dojo

Page Load Speed

2.2 sec in total

First Response

412 ms

Resources Loaded

1.7 sec

Page Rendered

136 ms

cyber-dojo.org screenshot

About Website

Welcome to cyber-dojo.org homepage info - get ready to check Cyber Dojo best content for Russia right away, or after learning these important things about cyber-dojo.org

Free Online Coding Dojo

Visit cyber-dojo.org

Key Findings

We analyzed Cyber-dojo.org page load time and found that the first response time was 412 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

cyber-dojo.org performance score

87

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

81/100

25%

SI (Speed Index)

Value3.9 s

83/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.6 s

82/100

10%

Network Requests Diagram

cyber-dojo.org

412 ms

application-b13c3aba74e6581200590c7916500149.css

104 ms

application-7917c23c41eb4509b6304cdab9bfab5f.js

658 ms

analytics.js

22 ms

all_avatars_background.png

577 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 67% of them (6 requests) were addressed to the original Cyber-dojo.org, 22% (2 requests) were made to Google-analytics.com and 11% (1 request) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (658 ms) belongs to the original domain Cyber-dojo.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 658.4 kB (63%)

Content Size

1.0 MB

After Optimization

387.4 kB

In fact, the total size of Cyber-dojo.org main page is 1.0 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. 20% of websites need less resources to load. Javascripts take 745.0 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 4.9 kB

  • Original 7.2 kB
  • After minification 6.4 kB
  • After compression 2.3 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 807 B, 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 4.9 kB or 68% of the original size.

Image Optimization

-1%

Potential reduce by 2.8 kB

  • Original 244.8 kB
  • After minification 242.0 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. Cyber Dojo images are well optimized though.

JavaScript Optimization

-82%

Potential reduce by 610.1 kB

  • Original 745.0 kB
  • After minification 474.8 kB
  • After compression 134.9 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 610.1 kB or 82% of the original size.

CSS Optimization

-83%

Potential reduce by 40.6 kB

  • Original 48.8 kB
  • After minification 48.4 kB
  • After compression 8.2 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. Cyber-dojo.org needs all CSS files to be minified and compressed as it can save up to 40.6 kB or 83% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cyber Dojo. According to our analytics all requests are already optimized.

Accessibility Review

cyber-dojo.org accessibility score

81

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

cyber-dojo.org 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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

cyber-dojo.org 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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cyber-dojo.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Cyber-dojo.org 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 Cyber Dojo. 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: