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v-kurse.com screenshot

Report Summary

  • 59

    Performance

    Renders faster than
    74% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

v-kurse.com

IT業界の成長と今後の注目分野

Page Load Speed

4.6 sec in total

First Response

870 ms

Resources Loaded

3.7 sec

Page Rendered

86 ms

v-kurse.com screenshot

About Website

Click here to check amazing V Kurse content for Russia. Otherwise, check out these important facts you probably never knew about v-kurse.com

IT業界で働く人の数はリーマンショック時を除いて常に成長しています。そんな成長が著しいIT業界でさらに注目されている分野がIoTです。近年、IoTが進むことでそれに携わるエンジニアが求められているのです。

Visit v-kurse.com

Key Findings

We analyzed V-kurse.com page load time and found that the first response time was 870 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

v-kurse.com performance score

59

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value7.7 s

24/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.8 s

67/100

10%

Network Requests Diagram

v-kurse.com

870 ms

www.v-kurse.com

1268 ms

style.min.css

1047 ms

jquery.sidr.dark.min.css

236 ms

font-awesome.css

621 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 94% of them (15 requests) were addressed to the original V-kurse.com, 6% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain V-kurse.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 307.5 kB (79%)

Content Size

389.8 kB

After Optimization

82.3 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of V-kurse.com main page is 389.8 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. 20% of websites need less resources to load. CSS take 240.9 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 28.5 kB

  • Original 37.3 kB
  • After minification 36.5 kB
  • After compression 8.8 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 28.5 kB or 76% of the original size.

JavaScript Optimization

-65%

Potential reduce by 72.2 kB

  • Original 111.5 kB
  • After minification 110.8 kB
  • After compression 39.3 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 72.2 kB or 65% of the original size.

CSS Optimization

-86%

Potential reduce by 206.8 kB

  • Original 240.9 kB
  • After minification 205.9 kB
  • After compression 34.2 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. V-kurse.com needs all CSS files to be minified and compressed as it can save up to 206.8 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (85%)

Requests Now

13

After Optimization

2

  • JavaScript
  • CSS

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of V Kurse. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

v-kurse.com

v-kurse.com

870 ms

www.v-kurse.com

www.v-kurse.com

1268 ms

style.min.css

style.min.css

1047 ms

jquery.sidr.dark.min.css

jquery.sidr.dark.min.css

236 ms

font-awesome.css

font-awesome.css

621 ms

css

css

20 ms

style.css

style.css

931 ms

blocks.css

blocks.css

472 ms

jquery.min.js

jquery.min.js

948 ms

jquery-migrate.min.js

jquery-migrate.min.js

476 ms

navigation.min.js

navigation.min.js

708 ms

skip-link-focus-fix.js

skip-link-focus-fix.js

714 ms

jquery.sidr.min.js

jquery.sidr.min.js

827 ms

custom.js

custom.js

943 ms

scrollup.js

scrollup.js

1030 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

472 ms

Accessibility Review

v-kurse.com accessibility score

97

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.

Best Practices

v-kurse.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

v-kurse.com SEO score

89

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

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

v-kurse.com

Open Graph data is detected on the main page of PARSED_DOMAIN, but there is no image specified in description. It would be a good idea for the website admin to select a nice image that can properly represent the website in Open Graph data, otherwise the first found image will be taken for this purpose and social media information block will look like this: