Tools & Wizards About Us
jacks.co.jp screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    46% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

jacks.co.jp

お口の健康が明日の笑顔へ｜デンタルプロ株式会社

Page Load Speed

5.9 sec in total

First Response

513 ms

Resources Loaded

5.2 sec

Page Rendered

203 ms

jacks.co.jp screenshot

About Website

Click here to check amazing Jacks content. Otherwise, check out these important facts you probably never knew about jacks.co.jp

デンタルプロ株式会社のウェブサイトです。デンタルプロ株式会社は培った経験、技術、品質のもと創造的思考でこれからも皆様のお口の健康に貢献します

Visit jacks.co.jp

Key Findings

We analyzed Jacks.co.jp page load time and found that the first response time was 513 ms and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

jacks.co.jp performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

12/100

10%

LCP (Largest Contentful Paint)

Value12.3 s

0/100

25%

SI (Speed Index)

Value16.1 s

0/100

10%

TBT (Total Blocking Time)

Value400 ms

68/100

30%

CLS (Cumulative Layout Shift)

Value0.503

16/100

15%

TTI (Time to Interactive)

Value9.5 s

30/100

10%

Network Requests Diagram

jacks.co.jp

513 ms

www.dentalpro.co.jp

875 ms

reset.css

330 ms

common.css

338 ms

top.css

341 ms

Our browser made a total of 110 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Jacks.co.jp, 96% (106 requests) were made to Dentalpro.co.jp and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Dentalpro.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 127.6 kB (19%)

Content Size

657.8 kB

After Optimization

530.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jacks.co.jp main page is 657.8 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. 40% of websites need less resources to load. Images take 478.0 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 47.0 kB

  • Original 53.0 kB
  • After minification 33.4 kB
  • After compression 5.9 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 19.5 kB, which is 37% 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 47.0 kB or 89% of the original size.

Image Optimization

-1%

Potential reduce by 3.9 kB

  • Original 478.0 kB
  • After minification 474.1 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. Jacks images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 57.1 kB

  • Original 103.3 kB
  • After minification 102.0 kB
  • After compression 46.2 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 57.1 kB or 55% of the original size.

CSS Optimization

-83%

Potential reduce by 19.6 kB

  • Original 23.6 kB
  • After minification 14.0 kB
  • After compression 4.0 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. Jacks.co.jp needs all CSS files to be minified and compressed as it can save up to 19.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (26%)

Requests Now

107

After Optimization

79

  • Images
  • JavaScript
  • CSS

The browser has sent 107 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jacks. 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

jacks.co.jp

jacks.co.jp

513 ms

www.dentalpro.co.jp

www.dentalpro.co.jp

875 ms

reset.css

reset.css

330 ms

common.css

common.css

338 ms

top.css

top.css

341 ms

news.css

news.css

349 ms

jquery-1.4.3.min.js

jquery-1.4.3.min.js

891 ms

jcarousellite_1.0.1.js

jcarousellite_1.0.1.js

491 ms

slideMainImg.js

slideMainImg.js

494 ms

slides.min.jquery.js

slides.min.jquery.js

504 ms

smartRollover.js

smartRollover.js

509 ms

ga.js

ga.js

5 ms

logo_dentalpro.gif

logo_dentalpro.gif

168 ms

__utm.gif

__utm.gif

14 ms

arrow_left.png

arrow_left.png

180 ms

bg_menu.png

bg_menu.png

172 ms

menu01_on.gif

menu01_on.gif

169 ms

menu02_off.gif

menu02_off.gif

175 ms

top_menu03_off.gif

top_menu03_off.gif

165 ms

bg_slidepannel.png

bg_slidepannel.png

271 ms

title_slidepannel_product.png

title_slidepannel_product.png

327 ms

bg_slidepannel_category.png

bg_slidepannel_category.png

337 ms

title_slidepannel_category.gif

title_slidepannel_category.gif

342 ms

bt_toothbrush_off.gif

bt_toothbrush_off.gif

348 ms

bt_interdentalbrush_off.gif

bt_interdentalbrush_off.gif

356 ms

bt_other_off.gif

bt_other_off.gif

437 ms

bt_oralacce_off.gif

bt_oralacce_off.gif

490 ms

bg_slidepannel_name.png

bg_slidepannel_name.png

504 ms

title_slidepannel_name.gif

title_slidepannel_name.gif

513 ms

list_icon_interdentalbrush.gif

list_icon_interdentalbrush.gif

521 ms

bt_more_name_off.gif

bt_more_name_off.gif

533 ms

bg_slidepannel_keyword.png

bg_slidepannel_keyword.png

602 ms

title_slidepannel_keyword.gif

title_slidepannel_keyword.gif

652 ms

list_icon_dentalclinic.gif

list_icon_dentalclinic.gif

670 ms

bt_more_keyword_off.gif

bt_more_keyword_off.gif

683 ms

menu04_off.gif

menu04_off.gif

693 ms

menu05_off.gif

menu05_off.gif

710 ms

menu06_off.gif

menu06_off.gif

767 ms

bn_dia_off.jpg

bn_dia_off.jpg

1300 ms

bn_cosme_off.jpg

bn_cosme_off.jpg

1341 ms

bn_tomjerry_off.jpg

bn_tomjerry_off.jpg

1531 ms

bn_dentalcosme_off.jpg

bn_dentalcosme_off.jpg

1038 ms

bn_haribo_off.jpg

bn_haribo_off.jpg

887 ms

bn_dental03_off.jpg

bn_dental03_off.jpg

932 ms

bg_product_info.gif

bg_product_info.gif

1065 ms

title_product.png

title_product.png

1098 ms

bt_left_off.gif

bt_left_off.gif

1211 ms

bt_right_off.gif

bt_right_off.gif

1242 ms

chougokuboso.gif

chougokuboso.gif

1264 ms

collect

collect

61 ms

chougokuboso_conpact.gif

chougokuboso_conpact.gif

1289 ms

conpact.gif

conpact.gif

1267 ms

chouconpact.gif

chouconpact.gif

1271 ms

chougokuboso_plus.gif

chougokuboso_plus.gif

1298 ms

black_whitening.gif

black_whitening.gif

1341 ms

hagukicare.gif

hagukicare.gif

1389 ms

black_dia.gif

black_dia.gif

1337 ms

black_dia_us.gif

black_dia_us.gif

1279 ms

denpro_cosme.gif

denpro_cosme.gif

1296 ms

w.gif

w.gif

1343 ms

craypas.gif

craypas.gif

1360 ms

syunsoku.gif

syunsoku.gif

1385 ms

nikukyu.gif

nikukyu.gif

1335 ms

babyage.gif

babyage.gif

1297 ms

tomandjerry_over0.gif

tomandjerry_over0.gif

1290 ms

tomandjerry_over1.5.gif

tomandjerry_over1.5.gif

1338 ms

tomandjerry_over6.gif

tomandjerry_over6.gif

1357 ms

fresh_sentankatame.gif

fresh_sentankatame.gif

1381 ms

fresh_chougokuboso.gif

fresh_chougokuboso.gif

1336 ms

fresh_spiral.gif

fresh_spiral.gif

1311 ms

fresh_m.gif

fresh_m.gif

1286 ms

i_15p.gif

i_15p.gif

1335 ms

l_10p.gif

l_10p.gif

1354 ms

softrubber.gif

softrubber.gif

1376 ms

fresh_flosspick.gif

fresh_flosspick.gif

1336 ms

tonguebrush.gif

tonguebrush.gif

1230 ms

tonguecare.gif

tonguecare.gif

1208 ms

mirror.gif

mirror.gif

1146 ms

bg_contents_wrap.gif

bg_contents_wrap.gif

1148 ms

title_news.png

title_news.png

1158 ms

icon_news.gif

icon_news.gif

1055 ms

bg_toothbrush.gif

bg_toothbrush.gif

1036 ms

title_toothbrush.gif

title_toothbrush.gif

1052 ms

list_icon_toothbrush.gif

list_icon_toothbrush.gif

1053 ms

img_toothbrush.png

img_toothbrush.png

1045 ms

bg_oralacce.gif

bg_oralacce.gif

1046 ms

title_collabo.gif

title_collabo.gif

1010 ms

list_icon_oralacce.gif

list_icon_oralacce.gif

1011 ms

bg_interdentalbrush.gif

bg_interdentalbrush.gif

1034 ms

title_interdentalbrush.gif

title_interdentalbrush.gif

1011 ms

img_interdentalbrush.png

img_interdentalbrush.png

1025 ms

bg_dentalclinic.gif

bg_dentalclinic.gif

1047 ms

title_dentalclinic.gif

title_dentalclinic.gif

1001 ms

bn_facebook_off.gif

bn_facebook_off.gif

1006 ms

bn_cosme_mv_off.jpg

bn_cosme_mv_off.jpg

1050 ms

bn_hamigaki_off.jpg

bn_hamigaki_off.jpg

1011 ms

title_medical.gif

title_medical.gif

1024 ms

bt_medical_off.gif

bt_medical_off.gif

1033 ms

bg_inquiry.gif

bg_inquiry.gif

1014 ms

inquiry_title.gif

inquiry_title.gif

990 ms

inquiry_name.gif

inquiry_name.gif

1066 ms

inquiry_tel.gif

inquiry_tel.gif

1011 ms

inquiry_mail.gif

inquiry_mail.gif

1025 ms

bg_pankuzu.gif

bg_pankuzu.gif

1025 ms

bg_pankuzulist.png

bg_pankuzulist.png

1000 ms

pankuzu_home_on.gif

pankuzu_home_on.gif

1003 ms

bn_nekopad_w300_off.jpg

bn_nekopad_w300_off.jpg

1075 ms

bn_hotchoco_w300_off.jpg

bn_hotchoco_w300_off.jpg

1011 ms

bt_pagetop_off.gif

bt_pagetop_off.gif

1025 ms

bg_footer.gif

bg_footer.gif

1013 ms

Accessibility Review

jacks.co.jp accessibility score

74

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

jacks.co.jp best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

jacks.co.jp SEO score

92

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 doesn't use 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 Jacks.co.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 Jacks.co.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

jacks.co.jp

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