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rois.ac.jp: 情報・システム研究機構

情報・システム研究機構は、全国の大学等の研究者コミュニティと連携して、極域科学、情報学、統計数理、遺伝学、データサイエンスの国際水準の総合研究を推進するとともに、現代の諸問題を情報とシステムという視点から捉え、分野の枠を越えた融合的な研究を行っています。

Page load speed analysis

  • 49/100

    Normal result
  • 5

    Successful tests
  • 3

    Failed tests
  • First response

    795 ms

  • Resources loaded

    6.9 sec

  • Page rendered

    299 ms

  • Total page load time

    8 sec

Welcome to rois.ac.jp homepage info - get ready to check Rois best content for Japan right away, or after learning these important things about rois.ac.jp

We analyzed Rois.ac.jp page load time and found that the first response time was 795 ms and then it took 7.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Page optimization

  • HTML 44.7 kB
    Images 600.3 kB
    Javascripts 220.9 kB
    CSS 22.0 kB

    In fact, the total size of Rois.ac.jp main page is 887.8 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. 20% of websites need less resources to load. Images take 600.3 kB which makes up the majority of the site volume.

    • Original 44.7 kB
    • After minification 41.4 kB
    • After compression 7.9 kB

    HTML optimization

    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 36.8 kB or 82% of the original size.

    • Original 600.3 kB
    • After optimization 578.6 kB

    Image optimization

    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. Rois images are well optimized though.

    • Original 220.9 kB
    • After minification 216.7 kB
    • After compression 58.8 kB

    JavaScript optimization

    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 162.1 kB or 73% of the original size.

    • Original 22.0 kB
    • After minification 15.0 kB
    • After compression 4.6 kB

    CSS optimization

    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. Rois.ac.jp needs all CSS files to be minified and compressed as it can save up to 17.4 kB or 79% of the original size.

Network requests diagram

  • rois.ac.jp
  • import.css
  • top.css
  • jquery-1.7.2.min.js
  • runs.js
  • amazingslider.js
  • initslider-1.js
  • base.css
  • common.css
  • module.css
  • bg_green.jpg
  • bg_top.jpg
  • logo.gif
  • subnav01.gif
  • subnav02.gif
  • subnav-staff.jpg
  • subnav-english.jpg
  • g-navi_home_o.jpg
  • g-navi_topics.jpg
  • g-navi_guide.jpg
  • g-navi_info.jpg
  • g-navi_link.jpg
  • g-navi_access.jpg
  • 02.jpg
  • 03.jpg
  • 04.jpg
  • 05.jpg
  • 06.jpg
  • 07.jpg
  • 08.jpg
  • btn_toplist01.jpg
  • btn_toplist02.jpg
  • btn_toplist03.jpg
  • btn_toplist04.jpg
  • btn_toplist05.jpg
  • btn_toplist06.jpg
  • h2_news.jpg
  • tolist.gif
  • ico_newsa_nii.gif
  • ico_newsa_research.gif
  • new.jpg
  • ico_newsa_rois.gif
  • ico_newsa_nipr.gif
  • ico_newsa_coop-math.gif
  • ico_newsa_togoob.gif
  • ico_newsa_nig.gif
  • h2_event.jpg
  • banner_4kikou.jpg
  • banner_rc2015_5.jpg
  • ura.jpg
  • danjyo_banner2015.jpg
  • yakushin_banner.jpg
  • woman190_researchers.gif
  • rep_banner25.jpg
  • saiyou2012_2.jpg
  • saiyou_shokuin.jpg
  • bnr_titeki.gif
  • banr_dbcls.jpg
  • cybersecurity2015.gif
  • fusei2.gif
  • security_site190.gif
  • jishinkanren_banner.gif
  • setsuden_taisaku_banner.gif
  • allow01.gif
  • btn_pagetop.gif
  • ico-pdf-01.gif
  • playvideo-64-64-0.png

Our browser made a total of 67 requests to load all elements on the main page. We found that all of those requests were addressed to Rois.ac.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (3.1 sec) belongs to the original domain Rois.ac.jp.

Additional info on rois.ac.jp

Requests

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rois. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

4

Javascripts

55

Images

5

CSS

64

All

Possible request optimization

1

Javascripts

55

Images

1

CSS

7

Optimized

57

All

Normal result

IP address

Rois.ac.jp uses IP address which is currently shared with 4 other domains. The more sites share the same IP address, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Poor result

IP Trace

rois.ac.jp

rikaken.co.jp

kuretake.ac.jp

tokyu-tmd.co.jp

kurahashi-a.co.jp

49.212.207.202

DNS records

Type Host Target/ip TTL Other
NS

rois.ac.jp

ns2.dns.ne.jp 300
NS

rois.ac.jp

ns1.dns.ne.jp 300
SOA

rois.ac.jp

300 Mname: master.dns.ne.jp
Rname: tech.sakura.ad.jp
Serial: 2021012600
Refresh: 3600
Retry: 900
Expire: 3600000
Minimum-ttl: 3600
MX

rois.ac.jp

alt1.aspmx.l.google.com 300 Pri: 5
MX

rois.ac.jp

alt2.aspmx.l.google.com 300 Pri: 5

Language and encoding

Poor result

Language

JA ja language flag

Detected

N/A  language flag

Claimed

Encoding

SHIFT_JIS

Claimed

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rois.ac.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 Rois.ac.jp main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

HTTPS certificate

SSL Certificate

Rois.ac.jp has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

Country of origin for 96.3% of all visits is Japan. It’s good for Rois.ac.jp that their server is also located in Japan, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Poor result

Social Sharing Optimization

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

rois.ac.jp

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