Tools & Wizards About Us
nag-j.co.jp screenshot

Report Summary

  • 69

    Performance

    Renders faster than
    81% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 46% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 87

    SEO

    Google-friendlier than
    66% of websites

nag-j.co.jp

日本ニューメリカルアルゴリズムズグループ株式会社（日本 NAG）

Page Load Speed

4 sec in total

First Response

825 ms

Resources Loaded

3.1 sec

Page Rendered

112 ms

nag-j.co.jp screenshot

About Website

Visit nag-j.co.jp now to see the best up-to-date NAG J content for Japan and also check out these interesting facts you probably never knew about nag-j.co.jp

日本ニューメリカルアルゴリズムズグループ株式会社 (Numerical Algorithms Group (NAG))は C/C++、Fortranなどの環境に対応した数値計算のソフトウェア及びコンサルティングを提供しています。

Visit nag-j.co.jp

Key Findings

We analyzed Nag-j.co.jp page load time and found that the first response time was 825 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

nag-j.co.jp performance score

69

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value6.6 s

37/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.4 s

83/100

10%

Network Requests Diagram

nag-j.co.jp

825 ms

nag.css

864 ms

menu.js

743 ms

nagmenu.js

549 ms

holiday.js

417 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 90% of them (18 requests) were addressed to the original Nag-j.co.jp, 10% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Nag-j.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 93.5 kB (50%)

Content Size

185.4 kB

After Optimization

91.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nag-j.co.jp main page is 185.4 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. Javascripts take 61.6 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 25.3 kB

  • Original 29.3 kB
  • After minification 20.7 kB
  • After compression 4.0 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 8.6 kB, which is 29% 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 25.3 kB or 86% of the original size.

Image Optimization

-3%

Potential reduce by 1.4 kB

  • Original 55.9 kB
  • After minification 54.5 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. NAG J images are well optimized though.

JavaScript Optimization

-54%

Potential reduce by 33.2 kB

  • Original 61.6 kB
  • After minification 59.1 kB
  • After compression 28.4 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 33.2 kB or 54% of the original size.

CSS Optimization

-87%

Potential reduce by 33.6 kB

  • Original 38.6 kB
  • After minification 31.8 kB
  • After compression 5.0 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. Nag-j.co.jp needs all CSS files to be minified and compressed as it can save up to 33.6 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (21%)

Requests Now

19

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of NAG J. 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

nag-j.co.jp

nag-j.co.jp

825 ms

nag.css

nag.css

864 ms

menu.js

menu.js

743 ms

nagmenu.js

nagmenu.js

549 ms

holiday.js

holiday.js

417 ms

copyright.js

copyright.js

363 ms

toplogo.gif

toplogo.gif

351 ms

naglibs.gif

naglibs.gif

359 ms

nagforlogo.jpg

nagforlogo.jpg

545 ms

fbs.gif

fbs.gif

552 ms

multi_super.png

multi_super.png

754 ms

forIntro.jpg

forIntro.jpg

586 ms

ronCofee1.gif

ronCofee1.gif

866 ms

sankaku.gif

sankaku.gif

726 ms

b011lis.gif

b011lis.gif

933 ms

blank.gif

blank.gif

918 ms

arrow.gif

arrow.gif

962 ms

banner2ul.jpg

banner2ul.jpg

1584 ms

ga.js

ga.js

4 ms

__utm.gif

__utm.gif

11 ms

Accessibility Review

nag-j.co.jp accessibility score

78

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

nag-j.co.jp 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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

nag-j.co.jp SEO score

87

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

    N/A

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nag-j.co.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Nag-j.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

nag-j.co.jp

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