6.3 sec in total
1.3 sec
4.8 sec
268 ms
Click here to check amazing Central Con content for Japan. Otherwise, check out these important facts you probably never knew about central-con.co.jp
総合建設コンサルタント
Visit central-con.co.jpWe analyzed Central-con.co.jp page load time and found that the first response time was 1.3 sec and then it took 5.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
central-con.co.jp performance score
name
value
score
weighting
Value8.2 s
0/100
10%
Value32.0 s
0/100
25%
Value13.2 s
2/100
10%
Value990 ms
27/100
30%
Value0.043
99/100
15%
Value13.2 s
12/100
10%
1271 ms
873 ms
994 ms
342 ms
547 ms
Our browser made a total of 75 requests to load all elements on the main page. We found that 99% of them (74 requests) were addressed to the original Central-con.co.jp, 1% (1 request) were made to Maps.google.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Central-con.co.jp.
Page size can be reduced by 222.3 kB (32%)
690.5 kB
468.2 kB
In fact, the total size of Central-con.co.jp main page is 690.5 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. 30% of websites need less resources to load. Images take 382.7 kB which makes up the majority of the site volume.
Potential reduce by 12.1 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. 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 12.1 kB or 73% of the original size.
Potential reduce by 3.3 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. Central Con images are well optimized though.
Potential reduce by 178.7 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 178.7 kB or 69% of the original size.
Potential reduce by 28.1 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. Central-con.co.jp needs all CSS files to be minified and compressed as it can save up to 28.1 kB or 84% of the original size.
Number of requests can be reduced by 9 (12%)
73
64
The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Central Con. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.
central-con.co.jp
1271 ms
style.css
873 ms
jquery.js
994 ms
jquery.rollover.js
342 ms
jquery.cookie.js
547 ms
jquery.cycle.all.js
912 ms
jquery.fontsizechange.js
372 ms
preload.js
511 ms
js
19 ms
styles.css
372 ms
pagenavi-css.css
373 ms
jquery.js
1122 ms
jquery.form.min.js
563 ms
scripts.js
380 ms
logo.gif
185 ms
fontsize.gif
188 ms
fontsize_normal.gif
173 ms
fontsize_large.gif
184 ms
head_eng.gif
168 ms
head_spa.gif
184 ms
head_contact.gif
332 ms
menu00.gif
354 ms
menu01.gif
341 ms
menu02.gif
365 ms
menu03.gif
364 ms
menu04.gif
371 ms
menu05.gif
496 ms
main_img01.jpg
1019 ms
main_img02.jpg
1077 ms
main_img03.jpg
1271 ms
main_img04.jpg
908 ms
main_img05.jpg
925 ms
service_title.gif
660 ms
service01.gif
826 ms
service02.gif
991 ms
service03.gif
1089 ms
service04.gif
1111 ms
service05.gif
1156 ms
btn_message.gif
1187 ms
btn_recruit.gif
1258 ms
quality_title.gif
1272 ms
quality_mark.gif
1297 ms
t_topics.gif
1321 ms
btn_list.gif
1356 ms
t_project.gif
1440 ms
pdf.gif
1450 ms
pagetop.gif
1452 ms
foot_logo.gif
1483 ms
bg.gif
190 ms
arrow.gif
175 ms
bn_ppp.gif
189 ms
0f073bfd9f91a01ece6025ea0db942db.gif
188 ms
foot_bg.gif
177 ms
foot_mark.gif
657 ms
foot_list.gif
346 ms
foot_arrow.gif
351 ms
head_eng_on.gif
1370 ms
head_spa_on.gif
1409 ms
head_contact_on.gif
1463 ms
menu00_on.gif
1471 ms
menu01_on.gif
1471 ms
menu02_on.gif
1494 ms
menu03_on.gif
1478 ms
menu04_on.gif
1520 ms
menu05_on.gif
1480 ms
service01_on.gif
1481 ms
service02_on.gif
1472 ms
service03_on.gif
1461 ms
service04_on.gif
1497 ms
service05_on.gif
1505 ms
btn_message_on.gif
1496 ms
btn_recruit_on.gif
1342 ms
btn_list_on.gif
1178 ms
fontsize_normal_on.gif
1081 ms
fontsize_normal_on_on.gif
1798 ms
central-con.co.jp 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
[aria-hidden="true"] elements contain focusable descendents
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
Buttons do not have an accessible name
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
central-con.co.jp best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
central-con.co.jp SEO score
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
Tap targets are not sized appropriately
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Central-con.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 Central-con.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.
central-con.co.jp
Open Graph description is not detected on the main page of Central Con. 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: