Tools & Wizards About Us
j-et.jp screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    47% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

j-et.jp

一般社団法人Japan Endovascular Treatment Conference （JET） | 医療 |日本

Page Load Speed

5.3 sec in total

First Response

752 ms

Resources Loaded

4.4 sec

Page Rendered

165 ms

j-et.jp screenshot

About Website

Visit j-et.jp now to see the best up-to-date JET content and also check out these interesting facts you probably never knew about j-et.jp

医療 | Japan Endovascular Treatment Conference （JET） 末梢血管治療に対する治療技術の交流と研究・開発・教育の発表の場とし、広く同技術の普及を計るための基礎的な問題を討論し、会員の技術の向上の場とすることを目的とする。

Visit j-et.jp

Key Findings

We analyzed J-et.jp page load time and found that the first response time was 752 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

j-et.jp performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

34/100

10%

LCP (Largest Contentful Paint)

Value5.6 s

18/100

25%

SI (Speed Index)

Value9.9 s

10/100

10%

TBT (Total Blocking Time)

Value1,960 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value16.2 s

5/100

10%

Network Requests Diagram

j-et.jp

752 ms

common.css

367 ms

common.js

366 ms

bg_head.gif

184 ms

head01.jpg

3411 ms

Our browser made a total of 15 requests to load all elements on the main page. We found that all of those requests were addressed to J-et.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (3.4 sec) belongs to the original domain J-et.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 11.6 kB (6%)

Content Size

186.0 kB

After Optimization

174.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of J-et.jp main page is 186.0 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 5% of websites need less resources to load. Images take 170.7 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 4.9 kB

  • Original 6.9 kB
  • After minification 5.9 kB
  • After compression 2.0 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 1.0 kB, which is 15% 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 4.9 kB or 71% of the original size.

Image Optimization

-0%

Potential reduce by 88 B

  • Original 170.7 kB
  • After minification 170.6 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. JET images are well optimized though.

JavaScript Optimization

-36%

Potential reduce by 82 B

  • Original 229 B
  • After minification 178 B
  • After compression 147 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 82 B or 36% of the original size.

CSS Optimization

-80%

Potential reduce by 6.5 kB

  • Original 8.1 kB
  • After minification 6.8 kB
  • After compression 1.6 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. J-et.jp needs all CSS files to be minified and compressed as it can save up to 6.5 kB or 80% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

14

After Optimization

14

  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JET. According to our analytics all requests are already optimized.

Network Requests Diagram

j-et.jp

j-et.jp

752 ms

common.css

common.css

367 ms

common.js

common.js

366 ms

bg_head.gif

bg_head.gif

184 ms

head01.jpg

head01.jpg

3411 ms

bg_menu.gif

bg_menu.gif

184 ms

menu01.gif

menu01.gif

343 ms

menu02.gif

menu02.gif

366 ms

menu03.gif

menu03.gif

366 ms

menu04.gif

menu04.gif

377 ms

menu05.gif

menu05.gif

376 ms

menu06.gif

menu06.gif

515 ms

title_new.gif

title_new.gif

546 ms

btn_pagetop.gif

btn_pagetop.gif

558 ms

jet_oben_logo.gif

jet_oben_logo.gif

563 ms

Accessibility Review

j-et.jp accessibility score

89

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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.

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

j-et.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

Missing source maps for large first-party JavaScript

SEO Factors

j-et.jp SEO score

97

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

    JP

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise J-et.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it does not match the claimed language. Our system also found out that J-et.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

j-et.jp

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