Report Summary

  • 78

    Performance

    Renders faster than
    85% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

kernelcomputer.co.jp

【カーネルコンピュータシステム】~データ変換ソフトの開発/販売~KCS

Page Load Speed

3.3 sec in total

First Response

776 ms

Resources Loaded

2.3 sec

Page Rendered

255 ms

kernelcomputer.co.jp screenshot

About Website

Welcome to kernelcomputer.co.jp homepage info - get ready to check Kernelcomputer best content for Japan right away, or after learning these important things about kernelcomputer.co.jp

CAD,PLOT,RASTERデータなどの各種フォーマットをデータ変換するソフトウェアの開発/販売と関連ソフトの受託開発を行っております。

Visit kernelcomputer.co.jp

Key Findings

We analyzed Kernelcomputer.co.jp page load time and found that the first response time was 776 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

kernelcomputer.co.jp performance score

78

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

39/100

25%

SI (Speed Index)

Value4.6 s

70/100

10%

TBT (Total Blocking Time)

Value180 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0.033

100/100

15%

TTI (Time to Interactive)

Value2.4 s

99/100

10%

Network Requests Diagram

kernelcomputer.co.jp

776 ms

kcs_style2.css

529 ms

srch3.css

353 ms

acctag.js

362 ms

srch.js

373 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 94% of them (34 requests) were addressed to the original Kernelcomputer.co.jp, 3% (1 request) were made to I.yimg.jp and 3% (1 request) were made to Custom.search.yahoo.co.jp. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Kernelcomputer.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 28.0 kB (38%)

Content Size

74.5 kB

After Optimization

46.4 kB

In fact, the total size of Kernelcomputer.co.jp main page is 74.5 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 10% of websites need less resources to load. Images take 46.6 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 12.1 kB

  • Original 16.6 kB
  • After minification 15.1 kB
  • After compression 4.6 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 12.1 kB or 73% of the original size.

Image Optimization

-16%

Potential reduce by 7.5 kB

  • Original 46.6 kB
  • After minification 39.2 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, Kernelcomputer needs image optimization as it can save up to 7.5 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-67%

Potential reduce by 825 B

  • Original 1.2 kB
  • After minification 642 B
  • After compression 404 B

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 825 B or 67% of the original size.

CSS Optimization

-77%

Potential reduce by 7.6 kB

  • Original 10.0 kB
  • After minification 7.7 kB
  • After compression 2.3 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. Kernelcomputer.co.jp needs all CSS files to be minified and compressed as it can save up to 7.6 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (40%)

Requests Now

35

After Optimization

21

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kernelcomputer. 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.

Accessibility Review

kernelcomputer.co.jp accessibility score

98

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

Best Practices

kernelcomputer.co.jp 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

SEO Factors

kernelcomputer.co.jp SEO score

98

Search Engine Optimization Advices

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

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kernelcomputer.co.jp 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 Kernelcomputer.co.jp main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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