Tools & Wizards About Us
wwwndc.jaea.go.jp screenshot

Report Summary

  • 56

    Performance

    Renders faster than
    73% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

wwwndc.jaea.go.jp

JAEA Nuclear Data Center Home Page

Page Load Speed

7.6 sec in total

First Response

1.2 sec

Resources Loaded

6.2 sec

Page Rendered

203 ms

wwwndc.jaea.go.jp screenshot

About Website

Visit wwwndc.jaea.go.jp now to see the best up-to-date Wwwndc JAEA content for Japan and also check out these interesting facts you probably never knew about wwwndc.jaea.go.jp

Visit wwwndc.jaea.go.jp

Key Findings

We analyzed Wwwndc.jaea.go.jp page load time and found that the first response time was 1.2 sec and then it took 6.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

wwwndc.jaea.go.jp performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value5.9 s

13/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value200 ms

89/100

30%

CLS (Cumulative Layout Shift)

Value0.112

86/100

15%

TTI (Time to Interactive)

Value7.4 s

48/100

10%

Network Requests Diagram

wwwndc.jaea.go.jp

1205 ms

style_ndc.css

440 ms

style_ndc_link.css

441 ms

ndclogo2.gif

897 ms

topj.gif

466 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 98% of them (40 requests) were addressed to the original Wwwndc.jaea.go.jp, 2% (1 request) were made to Google.com. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Wwwndc.jaea.go.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 30.5 kB (4%)

Content Size

794.1 kB

After Optimization

763.6 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Wwwndc.jaea.go.jp main page is 794.1 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. 15% of websites need less resources to load. Images take 772.1 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 17.1 kB

  • Original 20.6 kB
  • After minification 17.1 kB
  • After compression 3.5 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 3.6 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 17.1 kB or 83% of the original size.

Image Optimization

-2%

Potential reduce by 12.4 kB

  • Original 772.1 kB
  • After minification 759.7 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. Wwwndc JAEA images are well optimized though.

CSS Optimization

-70%

Potential reduce by 954 B

  • Original 1.4 kB
  • After minification 794 B
  • After compression 410 B

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. Wwwndc.jaea.go.jp needs all CSS files to be minified and compressed as it can save up to 954 B or 70% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (20%)

Requests Now

40

After Optimization

32

  • AJAX
  • Images
  • CSS

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wwwndc JAEA. 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.

Network Requests Diagram

wwwndc.jaea.go.jp

wwwndc.jaea.go.jp

1205 ms

style_ndc.css

style_ndc.css

440 ms

style_ndc_link.css

style_ndc_link.css

441 ms

ndclogo2.gif

ndclogo2.gif

897 ms

topj.gif

topj.gif

466 ms

group_en.gif

group_en.gif

513 ms

menber-f_en.gif

menber-f_en.gif

618 ms

work-f_en.gif

work-f_en.gif

879 ms

report-f_en.gif

report-f_en.gif

883 ms

nd_en.gif

nd_en.gif

981 ms

nucl_en-f.gif

nucl_en-f.gif

935 ms

menu_space.gif

menu_space.gif

1075 ms

search_en.gif

search_en.gif

1288 ms

jendl.gif

jendl.gif

1283 ms

menu_s02.gif

menu_s02.gif

1306 ms

menu_s03j.gif

menu_s03j.gif

1351 ms

menu_s05.gif

menu_s05.gif

1393 ms

tool_en.gif

tool_en.gif

1493 ms

menu_s08_fix.gif

menu_s08_fix.gif

1664 ms

menu_s20_fix.gif

menu_s20_fix.gif

1702 ms

etc_en.gif

etc_en.gif

1698 ms

menu_s11_fix.gif

menu_s11_fix.gif

1772 ms

menu_s09_fix.gif

menu_s09_fix.gif

1834 ms

menu_space2.gif

menu_space2.gif

1910 ms

menu_s14_fix.gif

menu_s14_fix.gif

2085 ms

structure-f_en.gif

structure-f_en.gif

2116 ms

acselam-f_en.gif

acselam-f_en.gif

2255 ms

menu_s0d.gif

menu_s0d.gif

2161 ms

jendl-comit-f_en.gif

jendl-comit-f_en.gif

2269 ms

menu_s19.gif

menu_s19.gif

2483 ms

picture.html

picture.html

2450 ms

menu_s16.gif

menu_s16.gif

2543 ms

topics.html

topics.html

2577 ms

topics.gif

topics.gif

2687 ms

notice.gif

notice.gif

2703 ms

new022_11.gif

new022_11.gif

2899 ms

Logo_40wht.gif

Logo_40wht.gif

15 ms

email.png

email.png

2697 ms

picture_20160211.jpg

picture_20160211.jpg

2678 ms

jendl40he.jpg

jendl40he.jpg

427 ms

JDDF2015.jpg

JDDF2015.jpg

507 ms

Accessibility Review

wwwndc.jaea.go.jp accessibility score

61

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.

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

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

High

Links do not have a discernible name

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

wwwndc.jaea.go.jp best practices score

67

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

wwwndc.jaea.go.jp SEO score

69

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Wwwndc.jaea.go.jp can be misinterpreted by Google and other search engines. Our service has detected that English 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 Wwwndc.jaea.go.jp 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

wwwndc.jaea.go.jp

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