Tools & Wizards About Us
know-vpd.jp screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

know-vpd.jp

Know VPD! - ワクチンで防げる病気（VPD）を知って子供たちの命を守る

Page Load Speed

7.3 sec in total

First Response

523 ms

Resources Loaded

6.4 sec

Page Rendered

362 ms

know-vpd.jp screenshot

About Website

Welcome to know-vpd.jp homepage info - get ready to check Know VPD best content for Japan right away, or after learning these important things about know-vpd.jp

ワクチンで防げる病気（VPD）を知って子供たちの命を守ろう。

Visit know-vpd.jp

Key Findings

We analyzed Know-vpd.jp page load time and found that the first response time was 523 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

know-vpd.jp performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value11.2 s

5/100

10%

TBT (Total Blocking Time)

Value200 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0.249

50/100

15%

TTI (Time to Interactive)

Value14.0 s

10/100

10%

Network Requests Diagram

know-vpd.jp

523 ms

know-vpd.jp

681 ms

www.know-vpd.jp

1296 ms

gtm.js

59 ms

design.css

679 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 85% of them (52 requests) were addressed to the original Know-vpd.jp, 7% (4 requests) were made to Platform.twitter.com and 3% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (3.2 sec) belongs to the original domain Know-vpd.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 787.8 kB (38%)

Content Size

2.1 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Know-vpd.jp main page is 2.1 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 25.0 kB

  • Original 31.0 kB
  • After minification 22.5 kB
  • After compression 6.1 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 8.5 kB, which is 27% 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 25.0 kB or 81% of the original size.

Image Optimization

-28%

Potential reduce by 463.8 kB

  • Original 1.6 MB
  • After minification 1.2 MB

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. Obviously, Know VPD needs image optimization as it can save up to 463.8 kB or 28% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-71%

Potential reduce by 125.4 kB

  • Original 175.5 kB
  • After minification 151.8 kB
  • After compression 50.1 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 125.4 kB or 71% of the original size.

CSS Optimization

-83%

Potential reduce by 173.6 kB

  • Original 209.9 kB
  • After minification 209.3 kB
  • After compression 36.3 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. Know-vpd.jp needs all CSS files to be minified and compressed as it can save up to 173.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (24%)

Requests Now

54

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Know VPD. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

know-vpd.jp

know-vpd.jp

523 ms

know-vpd.jp

know-vpd.jp

681 ms

www.know-vpd.jp

www.know-vpd.jp

1296 ms

gtm.js

gtm.js

59 ms

design.css

design.css

679 ms

jquery.min.js

jquery.min.js

815 ms

bootstrap.js

bootstrap.js

826 ms

respond.min.js

respond.min.js

502 ms

jquery.easing.min.js

jquery.easing.min.js

513 ms

footerFixed.js

footerFixed.js

514 ms

font-awesome.min.css

font-awesome.min.css

834 ms

accordion.js

accordion.js

690 ms

jquery.socialbutton.js

jquery.socialbutton.js

690 ms

hkds.socialbtn.js

hkds.socialbtn.js

848 ms

js

js

46 ms

side_nav.js

side_nav.js

697 ms

footer_t_home.js

footer_t_home.js

698 ms

notosansjapanese.css

notosansjapanese.css

35 ms

bt_sitemaps.jpg

bt_sitemaps.jpg

172 ms

bt_ask.jpg

bt_ask.jpg

166 ms

area_head_bg.png

area_head_bg.png

164 ms

area_head_logo.png

area_head_logo.png

173 ms

vis_vc.png

vis_vc.png

174 ms

title_vc.png

title_vc.png

168 ms

vis_sch.png

vis_sch.png

326 ms

title_sch.png

title_sch.png

331 ms

schedule_age7.png

schedule_age7.png

1001 ms

schedule_age0.png

schedule_age0.png

514 ms

bnr_lg_vc_0age.jpg

bnr_lg_vc_0age.jpg

343 ms

bnr_lg_apl.jpg

bnr_lg_apl.jpg

345 ms

main_ttl_news.jpg

main_ttl_news.jpg

488 ms

vpd_top_2011_main_ttl_rss.jpg

vpd_top_2011_main_ttl_rss.jpg

494 ms

vpd_top_2011_main_ichiran.jpg

vpd_top_2011_main_ichiran.jpg

515 ms

bnr_faq.png

bnr_faq.png

686 ms

bnr_hpv.png

bnr_hpv.png

650 ms

bnr_md_yobo_cs.jpg

bnr_md_yobo_cs.jpg

659 ms

bnr_md_vpdlist.jpg

bnr_md_vpdlist.jpg

684 ms

bnr_md_sch_7age.jpg

bnr_md_sch_7age.jpg

686 ms

bnr_md_sch_0age.jpg

bnr_md_sch_0age.jpg

814 ms

bnr_sch_multilingual.png

bnr_sch_multilingual.png

824 ms

bnr_topics_nl.jpg

bnr_topics_nl.jpg

860 ms

bnr_md_mbr_list.jpg

bnr_md_mbr_list.jpg

858 ms

bnr_md_josei.jpg

bnr_md_josei.jpg

858 ms

bnr_otona.png

bnr_otona.png

975 ms

bnr_book.jpg

bnr_book.jpg

989 ms

main_ttl_jimu.jpg

main_ttl_jimu.jpg

1030 ms

title_sns.png

title_sns.png

1030 ms

title_sns_facebook.png

title_sns_facebook.png

1031 ms

title_sns_instagram.png

title_sns_instagram.png

1138 ms

title_sns_twitter.png

title_sns_twitter.png

1154 ms

vsn_member.png

vsn_member.png

1165 ms

NotoSansJP-Bold.otf

NotoSansJP-Bold.otf

2855 ms

NotoSansJP-Regular.otf

NotoSansJP-Regular.otf

3196 ms

NotoSansJP-Black.otf

NotoSansJP-Black.otf

1833 ms

widgets.js

widgets.js

93 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1148 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

65 ms

settings

settings

103 ms

button.856debeac157d9669cf51e73a08fbc93.js

button.856debeac157d9669cf51e73a08fbc93.js

23 ms

embeds

embeds

48 ms

tweet_button.2f70fb173b9000da126c79afe2098f02.ja.html

tweet_button.2f70fb173b9000da126c79afe2098f02.ja.html

41 ms

Accessibility Review

know-vpd.jp accessibility score

84

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

know-vpd.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

know-vpd.jp SEO score

89

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Know-vpd.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 Know-vpd.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

know-vpd.jp

Open Graph data is detected on the main page of Know VPD. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: