8 sec in total
984 ms
6.2 sec
768 ms
Welcome to js-dance.com homepage info - get ready to check Js Dance best content for Japan right away, or after learning these important things about js-dance.com
駒込駅、大森駅より徒歩5分。東京都豊島区と大田区にある社交ダンススクールです。プライベートレッスン、グループレッスン、ウェディングダンスなどお一人お一人に合わせたレッスンメニューが豊富で、初心者様からもご好評いただいております。通勤・通学の帰り道に、社交ダンスの上達に、エクササイズに、新しい習い事に。ぜひいらしてください♪
Visit js-dance.comWe analyzed Js-dance.com page load time and found that the first response time was 984 ms and then it took 7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
js-dance.com performance score
name
value
score
weighting
Value4.7 s
13/100
10%
Value10.1 s
0/100
25%
Value8.7 s
16/100
10%
Value500 ms
58/100
30%
Value0.506
16/100
15%
Value9.1 s
33/100
10%
984 ms
532 ms
542 ms
1262 ms
738 ms
Our browser made a total of 70 requests to load all elements on the main page. We found that 97% of them (68 requests) were addressed to the original Js-dance.com, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (3.2 sec) belongs to the original domain Js-dance.com.
Page size can be reduced by 80.0 kB (11%)
697.3 kB
617.3 kB
In fact, the total size of Js-dance.com main page is 697.3 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 582.4 kB which makes up the majority of the site volume.
Potential reduce by 16.6 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 16.6 kB or 74% of the original size.
Potential reduce by 0 B
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. Js Dance images are well optimized though.
Potential reduce by 32.0 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 32.0 kB or 60% of the original size.
Potential reduce by 31.4 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. Js-dance.com needs all CSS files to be minified and compressed as it can save up to 31.4 kB or 80% of the original size.
Number of requests can be reduced by 29 (43%)
67
38
The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Js Dance. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
js-dance.com
984 ms
styles.css
532 ms
setup.js
542 ms
mootools.js
1262 ms
slimbox.js
738 ms
swfobject.js
739 ms
videobox.js
739 ms
jquery.js
1467 ms
jquery_noconflict.js
719 ms
jquery_slider.js
1963 ms
jquery_masonry.js
1106 ms
jquery_slidemenu.js
918 ms
shCore.js
1326 ms
hashchange.js
1102 ms
flexibleSearch.min.js
1652 ms
newmarks.js
1287 ms
acctag.js
1436 ms
flexibleSearch.js
1117 ms
style.css
990 ms
style-common.css
1094 ms
style-add.css
1110 ms
style-sp.css
1136 ms
404.php
616 ms
404.php
739 ms
analytics.js
98 ms
bnr_mens.jpg
1873 ms
bg_h1.gif
188 ms
logo.gif
371 ms
logo-tel.gif
182 ms
bg_menuw.gif
189 ms
bg_menu.gif
180 ms
menu0.jpg
175 ms
menu1.jpg
518 ms
menu2.jpg
534 ms
menu3.jpg
360 ms
menu4.jpg
371 ms
menu5.jpg
371 ms
menu6.jpg
540 ms
btn_menusp.png
555 ms
bg_back.jpg
556 ms
main_img.jpg
2030 ms
bg_voice.jpg
1725 ms
ob_new.gif
710 ms
bnr_lesson.jpg
1436 ms
bg_h3.jpg
738 ms
bg_h2.jpg
740 ms
bnr_contact.jpg
1954 ms
btn_pagetop.gif
923 ms
bnr_taiken.png
1665 ms
bnr_staff.jpg
1661 ms
bnr_dvd.jpg
2695 ms
bnr_genki.jpg
2030 ms
bnr_22nohi.jpg
2406 ms
bnr_media.png
2410 ms
bnr_handcraft.jpg
2135 ms
bnr_reqruit.jpg
2765 ms
side-h.jpg
2215 ms
side-f.jpg
2486 ms
ico_arrow01.gif
2400 ms
p_orner.jpg
3138 ms
ob_home.gif
2591 ms
top-movie.jpg
1111 ms
mttv.png
765 ms
search_data.js
2507 ms
collect
19 ms
p_studio.jpg
2854 ms
p_studio_komagome.jpg
3160 ms
bnr_book2014.png
3240 ms
ico_arrow03.gif
2754 ms
loading.gif
2769 ms
js-dance.com accessibility score
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
[role]s do not have all required [aria-*] attributes
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
Links do not have a discernible name
js-dance.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
js-dance.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
Document uses legible font sizes
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Js-dance.com 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 Js-dance.com 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.
js-dance.com
Open Graph description is not detected on the main page of Js Dance. 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: