Analyze 塾講師アルバイト・バイト求人募集で掲載教室数NO.1の塾講師JAPAN


Page load speed analysis

  • 52/100

    Normal result
  • 6

    Successful tests
  • 2

    Failed tests
  • First response

    433 ms

  • Resources loaded

    7.2 sec

  • Page rendered

    375 ms

  • Total page load time

    8 sec

Visit now to see the best up-to-date Jukukoushi content for Japan and also check out these interesting facts you probably never knew about

We analyzed page load time and found that the first response time was 433 ms and then it took 7.6 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 92.8 kB
    Images 1.1 MB
    Javascripts 861.9 kB
    CSS 60.4 kB

    In fact, the total size of 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. 45% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

    • Original 92.8 kB
    • After minification 74.8 kB
    • After compression 15.4 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. This page needs HTML code to be minified as it can gain 18.0 kB, which is 19% 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 77.4 kB or 83% of the original size.

    • Original 1.1 MB
    • After optimization 1.0 MB

    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. Jukukoushi images are well optimized though.

    • Original 861.9 kB
    • After minification 640.4 kB
    • After compression 236.5 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 625.3 kB or 73% of the original size.

    • Original 60.4 kB
    • After minification 43.9 kB
    • After compression 9.2 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. needs all CSS files to be minified and compressed as it can save up to 51.2 kB or 85% of the original size.

Network requests diagram

  • def.css
  • side.css
  • footer.css
  • home.css
  • slider.css
  • jquery-1.7.min.js
  • jquery-ui-1.8.16.dialog_autocomp.min.js
  • jquery.placeholder.min.js
  • toppage.js
  • jquery-ui-1.8.16.autocomp.css
  • toppage.css
  • slider.js
  • conversion.js
  • s_retargeting.js
  • conversion.js
  • tag.js
  • ga.js
  • analytics.js
  • fbds.js
  • bg_img.gif
  • jj_rogo_02.jpg
  • menu_e.gif
  • menu_subtop_left.gif
  • menu_subtop_right.jpg
  • menu_g.jpg
  • img_top_main_02.jpg
  • bg_top_station_01.jpg
  • ui-bg_inset-hard_100_fcfdfd_1x100.png
  • bt_top_station_01.jpg
  • title_bg_search.gif
  • bg_top_mainsearch.gif
  • bt_top_main_search.jpg
  • img_top_main_search_01.jpg
  • img_top_main_search_01touhoku.jpg
  • img_top_main_search_01kousinetu.jpg
  • img_top_main_search_01kansai.jpg
  • img_top_main_search_01kyuusyuu.jpg
  • img_top_main_search_01kantou.jpg
  • img_top_main_search_01toukai.jpg
  • img_top_main_search_01tyuugoku.jpg
  • img_top_main_search_02.jpg
  • img_top_main_search_02touhoku.jpg
  • img_top_main_search_02kousinetu.jpg
  • img_top_main_search_02kansai.jpg
  • img_top_main_search_02kyuusyuu.jpg
  • img_top_main_search_02kantou.jpg
  • img_top_main_search_02toukai.jpg
  • img_top_main_search_02tyuugoku.jpg
  • bt_search_feature_off.gif
  • bt_search_search.gif
  • bg_top_sub_search.gif
  • bt_top_search.gif
  • bn_pc_special_2015.jpg
  • icon_ar.gif
  • 4ff40de0-5ac0-4b64-9e8e-20243b6a6b5c.jpg
  • widgets.js
  • __utm.gif
  • collect
  • WRe0.js
  • collect
  • collect
  • 54aa25a3-e69c-4464-b3d5-02523b6a6b5c.jpg
  • bflruCIP
  • 50b6eef8-568c-42fa-8e9d-15b93b6a6b5c.jpg
  • 54aa26c5-7540-404d-ba04-0ebd3b6a6b5c.jpg
  • vyBCFOT5
  • conversion.js
  • 569c8cc8-e130-4039-ae27-4bdb3b6a6b5c.jpg
  • bn_top_03.gif
  • icon_urg.gif
  • icon_tri.gif
  • top_rs_login_bg_01_2.gif
  • bt_top_rs_01.gif
  • title_bg_rs_01_3.jpg
  • schoolie_bn_01_2.jpg
  • morijuku_bn_01.jpg
  • title_bg_rs_02.gif
  • bn_rs_con_01.gif
  • bn_rs_con_02.gif
  • bn_rs_con_03.gif
  • bn_rs_con_04.jpg
  • bn_rs_con_05.jpg
  • title_bg_rs_03.gif
  • img_rs_02.jpg
  • img_rs_01.jpg
  • img_rs_03.jpg
  • img_rs_04.jpg
  • img_rs_05.jpg
  • img_blog_01_top.jpg
  • title_bg_rs_05.gif
  • bn_rs_sp.jpg
  • bn_jkoushi_01.gif
  • logo_footer.gif
  • blade_track_jp.js
  • capture-apps-4.5.0.js
  • tag.js
  • timeline.1b43d11859b7663a2225b885f87704a5.js
  • mainconosusume_arrowleft.jpg
  • mainconosusume_arrowright.jpg
  • tag
  • syndication
  • 346432176277045249
  • iframeStorage.html
  • cookie_enabled_get.html
  • timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
  • timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
  • b7edc33167699c5081ce1b2208c81133_normal.png
  • iframeStorage.js
  • bl_track.cgi
  • jot
  • appsmanagerinit
  • ld.js
  • conversion.js
  • ya.js
  • event
  • fbevents.js
  • oct.js
  • event
  • adsct
  • adsct
  • pb.js
  • dis.aspx

Our browser made a total of 133 requests to load all elements on the main page. We found that 62% of them (83 requests) were addressed to the original, 4% (5 requests) were made to and 3% (4 requests) were made to The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain

Additional info on


The browser has sent 125 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jukukoushi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.











Possible request optimization













Normal result


As for redirects, our browser was forwarded to before it reached this domain.

IP address uses IP addresses which are currently shared with 14 other domains. The more sites share the same stack of IP addresses, 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.

Normal result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 300
NS 86400
NS 86400
NS 86400
NS 86400

HTTPS certificate

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

Poor result

Visitor World Map

Country of origin for 100% of all visits is Japan. It’s good for 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

Good result

Social Sharing Optimization

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

Language and encoding

Good result


JA ja language flag


JA ja language flag





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

Share this report in social media

Analyze another website