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cyber-dojo.org screenshot

Report Summary

  • 84

    Performance

    Renders faster than
    88% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

cyber-dojo.org

cyber-dojo

Page Load Speed

2.3 sec in total

First Response

210 ms

Resources Loaded

1.7 sec

Page Rendered

365 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

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Key Findings

We analyzed Cyber-dojo.org page load time and found that the first response time was 210 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

cyber-dojo.org performance score

84

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

52/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

80/100

25%

SI (Speed Index)

Value3.8 s

84/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value6.4 s

60/100

10%

Network Requests Diagram

cyber-dojo.org

210 ms

cyber-dojo.org

373 ms

home

92 ms

home

102 ms

jquery-3.4.1.min.js

185 ms

Our browser made a total of 27 requests to load all elements on the main page. We found that 85% of them (23 requests) were addressed to the original Cyber-dojo.org, 7% (2 requests) were made to Google-analytics.com and 4% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (464 ms) belongs to the original domain Cyber-dojo.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 298.9 kB (29%)

Content Size

1.0 MB

After Optimization

720.0 kB

  • HTML
  • Images
  • JavaScript

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. 30% of websites need less resources to load. Images take 881.4 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 11.6 kB

  • Original 15.3 kB
  • After minification 12.7 kB
  • After compression 3.7 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 2.6 kB, which is 17% 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 11.6 kB or 76% of the original size.

Image Optimization

-31%

Potential reduce by 270.5 kB

  • Original 881.4 kB
  • After minification 610.9 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. Obviously, Cyber Dojo needs image optimization as it can save up to 270.5 kB or 31% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-14%

Potential reduce by 16.8 kB

  • Original 122.1 kB
  • After minification 122.1 kB
  • After compression 105.3 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 16.8 kB or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (17%)

Requests Now

23

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cyber Dojo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

cyber-dojo.org

cyber-dojo.org

210 ms

cyber-dojo.org

cyber-dojo.org

373 ms

home

home

92 ms

home

home

102 ms

jquery-3.4.1.min.js

jquery-3.4.1.min.js

185 ms

jquery-ui-1.8.23.min.js

jquery-ui-1.8.23.min.js

459 ms

app.css

app.css

277 ms

app.js

app.js

279 ms

analytics.js

analytics.js

44 ms

all_gray.png

all_gray.png

456 ms

cyber-dojo.png

cyber-dojo.png

92 ms

donateGBP.png

donateGBP.png

279 ms

donateUSD.png

donateUSD.png

186 ms

donateEUR.png

donateEUR.png

360 ms

ruby.png

ruby.png

276 ms

github.png

github.png

279 ms

docker.png

docker.png

280 ms

circleci.png

circleci.png

457 ms

aws.png

aws.png

369 ms

kubernetes.png

kubernetes.png

463 ms

JonJagger.jpg

JonJagger.jpg

370 ms

MikeLong.jpg

MikeLong.jpg

451 ms

OlveMaudal.jpg

OlveMaudal.jpg

464 ms

SebRose.jpg

SebRose.jpg

463 ms

collect

collect

13 ms

js

js

68 ms

pixel.gif

pixel.gif

15 ms

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

62

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

cyber-dojo.org

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: