Tools & Wizards About Us
kernelios.com screenshot

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

kernelios.com

KERNELIOS | Cyber Security Courses |Simulating Cyber Threats

Page Load Speed

2.8 sec in total

First Response

175 ms

Resources Loaded

1.7 sec

Page Rendered

935 ms

kernelios.com screenshot

About Website

Click here to check amazing KERNELIOS content. Otherwise, check out these important facts you probably never knew about kernelios.com

KERNELIOS We are experts in cyber security. We train and qualify individuals and companies to fight cyber threats by simulating real threats.

Visit kernelios.com

Key Findings

We analyzed Kernelios.com page load time and found that the first response time was 175 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

kernelios.com performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

39/100

10%

LCP (Largest Contentful Paint)

Value19.7 s

0/100

25%

SI (Speed Index)

Value13.8 s

1/100

10%

TBT (Total Blocking Time)

Value12,020 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value27.3 s

0/100

10%

Network Requests Diagram

kernelios.com

175 ms

www.kernelios.com

277 ms

Our browser made a total of 2 requests to load all elements on the main page. We found that all of those requests were addressed to Kernelios.com and no external sources were called. The less responsive or slowest element that took the longest time to load (277 ms) belongs to the original domain Kernelios.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.9 MB (54%)

Content Size

3.6 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kernelios.com main page is 3.6 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. Images take 2.7 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 365.8 kB

  • Original 434.8 kB
  • After minification 434.8 kB
  • After compression 69.1 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 365.8 kB or 84% of the original size.

Image Optimization

-57%

Potential reduce by 1.6 MB

  • Original 2.7 MB
  • After minification 1.2 MB

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, KERNELIOS needs image optimization as it can save up to 1.6 MB or 57% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 549 B

  • Original 230.2 kB
  • After minification 230.2 kB
  • After compression 229.6 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 552 B

  • Original 153.2 kB
  • After minification 153.2 kB
  • After compression 152.7 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. Kernelios.com has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Network Requests Diagram

kernelios.com

kernelios.com

175 ms

www.kernelios.com

www.kernelios.com

277 ms

Accessibility Review

kernelios.com accessibility score

93

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

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

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

kernelios.com best practices score

75

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

kernelios.com SEO score

89

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

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Kernelios.com 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 Kernelios.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

kernelios.com

Open Graph data is detected on the main page of KERNELIOS. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: