Report Summary

  • 49

    Performance

    Renders faster than
    67% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

jctc.jp

一般財団法人 全国建設研修センター |

Page Load Speed

1.9 sec in total

First Response

341 ms

Resources Loaded

1.4 sec

Page Rendered

129 ms

jctc.jp screenshot

About Website

Click here to check amazing Jctc content for Japan. Otherwise, check out these important facts you probably never knew about jctc.jp

一般財団法人 全国建設研修センター(JCTC)は、国づくり・まちづくり並びにこれに携わる人材の育成に全力で取り組んでいます。

Visit jctc.jp

Key Findings

We analyzed Jctc.jp page load time and found that the first response time was 341 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

jctc.jp performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value5.5 s

54/100

10%

TBT (Total Blocking Time)

Value160 ms

94/100

30%

CLS (Cumulative Layout Shift)

Value0.231

54/100

15%

TTI (Time to Interactive)

Value6.7 s

56/100

10%

Network Requests Diagram

jctc.jp

341 ms

www.jctc.jp

8 ms

www.jctc.jp

397 ms

js

89 ms

style.min.css

218 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 62% of them (21 requests) were addressed to the original Jctc.jp, 12% (4 requests) were made to Unpkg.com and 9% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (406 ms) belongs to the original domain Jctc.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 41.1 kB (11%)

Content Size

386.8 kB

After Optimization

345.7 kB

In fact, the total size of Jctc.jp main page is 386.8 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. 35% of websites need less resources to load. Images take 251.3 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 22.4 kB

  • Original 27.7 kB
  • After minification 25.1 kB
  • After compression 5.3 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 22.4 kB or 81% of the original size.

Image Optimization

-5%

Potential reduce by 12.2 kB

  • Original 251.3 kB
  • After minification 239.0 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. Jctc images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 2.6 kB

  • Original 59.6 kB
  • After minification 59.6 kB
  • After compression 57.0 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

-8%

Potential reduce by 3.8 kB

  • Original 48.2 kB
  • After minification 48.1 kB
  • After compression 44.4 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. Jctc.jp has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 14 (54%)

Requests Now

26

After Optimization

12

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jctc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

jctc.jp accessibility score

91

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

Links do not have a discernible name

Best Practices

jctc.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

jctc.jp SEO score

100

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

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 Jctc.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 Jctc.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

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