Tools & Wizards About Us
cvi.or.jp screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

cvi.or.jp

心臓血管研究所付属病院｜循環器内科・心臓血管外科｜港区西麻布

Page Load Speed

7.7 sec in total

First Response

928 ms

Resources Loaded

6.3 sec

Page Rendered

568 ms

cvi.or.jp screenshot

About Website

Visit cvi.or.jp now to see the best up-to-date Cvi content for Japan and also check out these interesting facts you probably never knew about cvi.or.jp

港区西麻布にある循環器内科・心臓血管外科・心臓リハビリテーション科の病院　公益財団法人 心臓血管研究所付属病院のホームページです。1959年に赤坂に財団を設立以来、心臓や血管の専門として最新の機器・医療知識で皆様の健康をお守りしています。診療時間は月曜日～金曜日の8:45～12:00と13:30～16:00です。

Visit cvi.or.jp

Key Findings

We analyzed Cvi.or.jp page load time and found that the first response time was 928 ms and then it took 6.8 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

cvi.or.jp performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value40.6 s

0/100

25%

SI (Speed Index)

Value16.4 s

0/100

10%

TBT (Total Blocking Time)

Value1,930 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.305

39/100

15%

TTI (Time to Interactive)

Value15.7 s

6/100

10%

Network Requests Diagram

cvi.or.jp

928 ms

screen.css

426 ms

default.css

449 ms

jquery.min.js

52 ms

smartRollover.js

446 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 95% of them (58 requests) were addressed to the original Cvi.or.jp, 3% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Code.jquery.com. The less responsive or slowest element that took the longest time to load (3.8 sec) belongs to the original domain Cvi.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 151.9 kB (23%)

Content Size

646.8 kB

After Optimization

494.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cvi.or.jp main page is 646.8 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. 25% of websites need less resources to load. Images take 427.5 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 10.7 kB

  • Original 14.9 kB
  • After minification 12.7 kB
  • After compression 4.2 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 2.2 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 10.7 kB or 72% of the original size.

Image Optimization

-0%

Potential reduce by 181 B

  • Original 427.5 kB
  • After minification 427.3 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. Cvi images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 124.2 kB

  • Original 182.8 kB
  • After minification 165.0 kB
  • After compression 58.7 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 124.2 kB or 68% of the original size.

CSS Optimization

-78%

Potential reduce by 16.9 kB

  • Original 21.7 kB
  • After minification 16.9 kB
  • After compression 4.8 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. Cvi.or.jp needs all CSS files to be minified and compressed as it can save up to 16.9 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (53%)

Requests Now

59

After Optimization

28

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cvi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cvi.or.jp

cvi.or.jp

928 ms

screen.css

screen.css

426 ms

default.css

default.css

449 ms

jquery.min.js

jquery.min.js

52 ms

smartRollover.js

smartRollover.js

446 ms

jquery.cookie.js

jquery.cookie.js

655 ms

jquery.fontsizechange.js

jquery.fontsizechange.js

456 ms

nivo-slider.css

nivo-slider.css

526 ms

jquery-1.9.0.min.js

jquery-1.9.0.min.js

1541 ms

jquery.nivo.slider.js

jquery.nivo.slider.js

1146 ms

osirase.cgi

osirase.cgi

1060 ms

base.css

base.css

473 ms

top.css

top.css

258 ms

styles.css

styles.css

300 ms

analytics.js

analytics.js

141 ms

hNavi00.gif

hNavi00.gif

203 ms

hNavi01.gif

hNavi01.gif

210 ms

hNavi02.gif

hNavi02.gif

207 ms

hNavi03.gif

hNavi03.gif

200 ms

hNavi04.gif

hNavi04.gif

201 ms

logo.gif

logo.gif

197 ms

font.gif

font.gif

382 ms

fsize3.gif

fsize3.gif

393 ms

fsize2.gif

fsize2.gif

409 ms

fsize1.gif

fsize1.gif

409 ms

gNavi01_off.jpg

gNavi01_off.jpg

411 ms

gNavi02_off.jpg

gNavi02_off.jpg

417 ms

gNavi03_off.jpg

gNavi03_off.jpg

562 ms

gNavi04_off.jpg

gNavi04_off.jpg

591 ms

gNavi05_off.jpg

gNavi05_off.jpg

618 ms

loading.gif

loading.gif

618 ms

01.jpg

01.jpg

1562 ms

02.jpg

02.jpg

3790 ms

03.jpg

03.jpg

1218 ms

04.jpg

04.jpg

1693 ms

05.jpg

05.jpg

2961 ms

icon1.gif

icon1.gif

1319 ms

icon2.gif

icon2.gif

1441 ms

icon3.gif

icon3.gif

1538 ms

icon4.gif

icon4.gif

1629 ms

icon5.gif

icon5.gif

1742 ms

tel.gif

tel.gif

1775 ms

icon6.gif

icon6.gif

1827 ms

bnr_seminar.gif

bnr_seminar.gif

1902 ms

bnr_recruit2.gif

bnr_recruit2.gif

2583 ms

topmap.gif

topmap.gif

2191 ms

info.gif

info.gif

2014 ms

bnr_kensa.gif

bnr_kensa.gif

2104 ms

bnr_faq.gif

bnr_faq.gif

2212 ms

bnr_kifu2.gif

bnr_kifu2.gif

2310 ms

bnr_kunihara3.gif

bnr_kunihara3.gif

2332 ms

msgs.cgi

msgs.cgi

770 ms

collect

collect

21 ms

bnr_sp.gif

bnr_sp.gif

2229 ms

bnr_mej.gif

bnr_mej.gif

2350 ms

bnr_ccu.gif

bnr_ccu.gif

2438 ms

fsize1_ov.gif

fsize1_ov.gif

2455 ms

fsize1_ov_ov.gif

fsize1_ov_ov.gif

2561 ms

osirase.css

osirase.css

433 ms

2.gif

2.gif

231 ms

arrows.png

arrows.png

179 ms

Accessibility Review

cvi.or.jp accessibility score

94

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

Links do not have a discernible name

Best Practices

cvi.or.jp best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

cvi.or.jp SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cvi.or.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 Cvi.or.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

cvi.or.jp

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