itojuku.co.jp website information.

itojuku.co.jp domain name is registered by .JP top-level domain registry. See the other sites registred in .JP domain zone.

Following name servers are specified for itojuku.co.jp domain:

nsx.clara.co.jp
s15.clara.co.jp

and probably website itojuku.co.jp is hosted by ST-BGP - Sharktech, US web hosting company. Check the complete list of other most popular websites hosted by ST-BGP - Sharktech, US hosting company.

According to Alexa traffic rank the highest website itojuku.co.jp position was 16009 (in the world). The lowest Alexa rank position was 996679. Now website itojuku.co.jp ranked in Alexa database as number 704333 (in the world).

Website itojuku.co.jp Desktop speed measurement score (25/100) is better than the results of 6.03% of other sites shows that the page desktop performance can be improved.

itojuku.co.jp Mobile usability score (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.

Mobile speed measurement score of itojuku.co.jp (16/100) is better than the results of 3.07% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

Date	Rank	Change
Nov-15-2024	704,333	294
Nov-14-2024	704,627	-27,263
Nov-13-2024	677,364	0
Nov-12-2024	677,364	0
Nov-11-2024	677,364	0
Nov-10-2024	677,364	27,898
Nov-09-2024	705,262	-13,654

itojuku.co.jp Rank History

Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.

itojuku.co.jp whois

WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.

itojuku.co.jp server information

Servers Location

IP Address
210.131.150.99

Country
Japan

Region
Tokyo

City
Tokyo

itojuku.co.jp desktop page speed rank

Last tested: 2018-11-04

Desktop Speed Bad

25/100

itojuku.co.jp Desktop Speed Test Quick Summary

priority - 170 Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 1.6MiB (71% reduction).

Compressing https://www.itojuku.co.jp/_src/217917/img20180618101753055903.jpg could save 392.8KiB (79% reduction).
Compressing https://www.itojuku.co.jp/_src/217919/img20180914181639268380.jpg could save 316.9KiB (74% reduction).
Compressing https://www.itojuku.co.jp/_src/217920/img20181011145715250579.jpg could save 260.4KiB (77% reduction).
Compressing https://www.itojuku.co.jp/_src/217916/img20180608095536361426.jpg could save 116.7KiB (71% reduction).
Compressing https://www.itojuku.co.jp/_src/171336/istock_74188229_large.jpg could save 109.9KiB (81% reduction).
Compressing https://www.itojuku.co.jp/_src/204202/style_web.jpg could save 109.7KiB (79% reduction).
Compressing https://www.itojuku.co.jp/_src/171332/gty0019642103.jpg could save 64.9KiB (82% reduction).
Compressing https://www.itojuku.co.jp/_src/171338/gty0003064803.jpg could save 62.5KiB (85% reduction).
Compressing https://www.itojuku.co.jp/_src/171334/gty0003251002.jpg could save 54.2KiB (79% reduction).
Compressing https://www.itojuku.co.jp/_src/204206/style_web.jpg could save 40.6KiB (71% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/icon_tokusyu.png could save 14.1KiB (95% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/icon_event.png could save 14.1KiB (95% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/icon_oshirase.png could save 14.1KiB (95% reduction).
Compressing https://www.itojuku.co.jp/_src/217918/img20180926175548712286.jpg could save 10.8KiB (22% reduction).
Compressing https://www.itojuku.co.jp/_src/108627/top_banner3.jpg could save 9.7KiB (44% reduction).
Compressing https://www.itojuku.co.jp/_src/509/from-now-on_bg.jpg could save 8.6KiB (16% reduction).
Compressing https://www.itojuku.co.jp/_src/590/from-now-on_bg.jpg could save 8.6KiB (16% reduction).
Compressing https://www.itojuku.co.jp/_src/108634/top_banner6.jpg could save 7.1KiB (45% reduction).
Compressing https://www.itojuku.co.jp/_src/108631/top_banner7.jpg could save 6.3KiB (47% reduction).
Compressing https://www.itojuku.co.jp/_src/108625/top_banner2.jpg could save 5.3KiB (36% reduction).
Compressing https://www.itojuku.co.jp/_src/108623/top_banner1.jpg could save 4.5KiB (41% reduction).
Compressing https://www.itojuku.co.jp/_src/599/now_img5_sp.png could save 2.6KiB (39% reduction).
Compressing https://www.itojuku.co.jp/_src/570/now_img5.png could save 2.6KiB (42% reduction).
Compressing https://www.itojuku.co.jp/_src/593/now_img2_sp.png could save 2.5KiB (41% reduction).
Compressing https://www.itojuku.co.jp/_src/564/now_img2.png could save 2.3KiB (42% reduction).
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Compressing https://www.itojuku.co.jp/_src/591/now_img1_sp.png could save 1.9KiB (39% reduction).
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Compressing https://www.itojuku.co.jp/_src/204203/icon_ar_r.png could save 860B (82% reduction).
Compressing https://www.itojuku.co.jp/_src/204204/icon_ar_r.png could save 860B (82% reduction).
Compressing https://www.itojuku.co.jp/_plugins/slide/bdSlideHorizontal/select.png could save 822B (55% reduction).
Compressing https://www.itojuku.co.jp/_plugins/slide/bdSlideHorizontal/arrow.png could save 311B (37% reduction).

priority - 61 Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

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https://www.itojuku.co.jp/_cssskin/_top_news.css (expiration not specified)
https://www.itojuku.co.jp/_cssskin/_top_osusumeList.css (expiration not specified)
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https://www.itojuku.co.jp/_plugins/slide/bdSlideHorizontal/arrow.png (expiration not specified)
https://www.itojuku.co.jp/_plugins/slide/bdSlideHo…indboxslim_loading.gif (expiration not specified)
https://www.itojuku.co.jp/_plugins/slide/bdSlideHorizontal/engine.js (expiration not specified)
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https://www.itojuku.co.jp/_src/108623/top_banner1.jpg (expiration not specified)
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https://www.itojuku.co.jp/_src/144041/header-logo.png (expiration not specified)
https://www.itojuku.co.jp/_src/171332/gty0019642103.jpg (expiration not specified)
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https://www.itojuku.co.jp/_src/171336/istock_74188229_large.jpg (expiration not specified)
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https://www.itojuku.co.jp/_src/217916/img20180608095536361426.jpg (expiration not specified)
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https://www.itojuku.co.jp/_userdata/images/icon_cart.svg (expiration not specified)
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https://www.itojuku.co.jp/hgk-plugin/news/engine.js (expiration not specified)
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https://www.itojuku.co.jp/hgk-plugin/news/style.css (expiration not specified)
https://www.itojuku.co.jp/hgk-plugin/news/underscore-min.js (expiration not specified)
https://www.itojuku.co.jp/hgk-plugin/product_login/engine.js (expiration not specified)
https://www.googletagmanager.com/gtag/js?id=AW-800524161 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-T295TS (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/119147…4897?v=2.8.32&r=stable (20 minutes)
https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
https://www.googleadservices.com/pagead/conversion_async.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 52 Enable compression

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Enable compression for the following resources to reduce their transfer size by 511.3KiB (76% reduction).

Compressing https://www.itojuku.co.jp/_module/lib/lib.js could save 208KiB (72% reduction).
Compressing https://www.itojuku.co.jp/_module/styles/bind.css could save 108.8KiB (86% reduction).
Compressing https://www.itojuku.co.jp/_module/scripts/bind.js could save 48.9KiB (75% reduction).
Compressing https://www.itojuku.co.jp/ could save 30.3KiB (80% reduction).
Compressing https://www.itojuku.co.jp/_module/bindicon/style.css could save 29.9KiB (83% reduction).
Compressing https://module.bindsite.jp/type-fonts/css/mplus-fonts.css could save 12.9KiB (93% reduction).
Compressing https://www.itojuku.co.jp/index.css?1541039344592c0100 could save 11.5KiB (87% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/underscore-min.js could save 10.4KiB (64% reduction).
Compressing https://www.itojuku.co.jp/_userdata/common.css could save 9.1KiB (77% reduction).
Compressing https://www.itojuku.co.jp/_dress/a8fd7636cc864b77b…base.css?1541039344583 could save 8.3KiB (85% reduction).
Compressing https://www.itojuku.co.jp/_plugins/slide/bdSlideHorizontal/engine.js could save 8.2KiB (67% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/engine.js could save 3.3KiB (74% reduction).
Compressing https://www.itojuku.co.jp/_userdata/libs.min.js could save 2.5KiB (56% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/product_login/engine.js could save 1.9KiB (67% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/data.php?news_id=1 could save 1.6KiB (62% reduction).
Compressing https://www.itojuku.co.jp/_userdata/common.js could save 1.5KiB (55% reduction).
Compressing https://www.itojuku.co.jp/_plugins/slide/bdSlideHorizontal/style.css could save 1.5KiB (68% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/data.php?news_id=30 could save 1.3KiB (63% reduction).
Compressing https://www.itojuku.co.jp/_cssskin/_top_index.css could save 961B (70% reduction).
Compressing https://www.itojuku.co.jp/_cssskin/_learning_style.css could save 839B (66% reduction).
Compressing https://www.itojuku.co.jp/_userdata/images/icon_cart.svg could save 825B (61% reduction).
Compressing https://www.itojuku.co.jp/_cssskin/_top_news.css could save 640B (66% reduction).
Compressing https://www.itojuku.co.jp/_csslinkbtn/text-black.css could save 594B (63% reduction).
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Compressing https://www.itojuku.co.jp/_csslinkbtn/btn-import.css could save 584B (72% reduction).
Compressing https://www.itojuku.co.jp/_csslinkbtn/blue_big.css could save 543B (61% reduction).
Compressing https://www.itojuku.co.jp/_cssskin/_gfooter.css could save 511B (63% reduction).
Compressing https://www.itojuku.co.jp/_csslinkbtn/btn_okinawa.css could save 487B (63% reduction).
Compressing https://www.itojuku.co.jp/_csslinkbtn/shinnyusei_cnv.css could save 476B (61% reduction).
Compressing https://www.itojuku.co.jp/_csslinkbtn/gyosho_cnv.css could save 453B (58% reduction).
Compressing https://www.itojuku.co.jp/_userdata/images/icon_mypage.svg could save 408B (43% reduction).
Compressing https://www.itojuku.co.jp/_csslinkbtn/intext.css could save 401B (60% reduction).
Compressing https://www.itojuku.co.jp/_cssskin/_top_osusumeList.css could save 355B (58% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/style.css could save 304B (59% reduction).
Compressing https://www.itojuku.co.jp/_userdata//images/icon_search.svg could save 195B (36% reduction).
Compressing https://www.itojuku.co.jp/_userdata/images/icon_mail.svg could save 190B (33% reduction).
Compressing https://www.itojuku.co.jp/_webfonts.css?1541039344609 could save 179B (45% reduction).
Compressing https://www.itojuku.co.jp/_userdata/images/g_navi_ar.svg could save 177B (30% reduction).
Compressing https://www.itojuku.co.jp/_userdata/images/icon_book.svg could save 175B (34% reduction).
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Compressing https://www.itojuku.co.jp/_csslinkbtn/shishomenu_pink.css could save 124B (40% reduction).
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Compressing https://www.itojuku.co.jp/_csslinkbtn/shishomenu_cnv.css could save 122B (39% reduction).
Compressing https://www.itojuku.co.jp/_csslinkbtn/redpink_big.css could save 117B (35% reduction).
Compressing https://www.itojuku.co.jp/_csslinkbtn/shishomenu_brown.css could save 117B (37% reduction).
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Compressing https://www.itojuku.co.jp/_csslinkbtn/gyosho_menucnv.css could save 113B (35% reduction).
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priority - 9 Avoid landing page redirects

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priority - 4 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

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Optimize CSS Delivery of the following:

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priority - 1 Minify HTML

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Minify HTML for the following resources to reduce their size by 9KiB (24% reduction).

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priority - 1 Minify CSS

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priority - 1 Minify JavaScript

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itojuku.co.jp Desktop Resources

Total Resources	147
Number of Hosts	14
Static Resources	126
JavaScript Resources	20
CSS Resources	54

itojuku.co.jp Desktop Resource Breakdown

itojuku.co.jp mobile page speed rank

Last tested: 2018-11-04

Mobile Speed Bad

16/100

itojuku.co.jp Mobile Speed Test Quick Summary

priority - 170 Optimize images

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priority - 92 Leverage browser caching

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https://webfont-pub.weblife.me/fp-bf/3d4c80e6 (expiration not specified)
https://www.itojuku.co.jp/_csslinkbtn/blue_big.css (expiration not specified)
https://www.itojuku.co.jp/_csslinkbtn/btn-attention.css (expiration not specified)
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https://www.itojuku.co.jp/_csslinkbtn/btn-import.css (expiration not specified)
https://www.itojuku.co.jp/_csslinkbtn/btn-info.css (expiration not specified)
https://www.itojuku.co.jp/_csslinkbtn/btn-primary.css (expiration not specified)
https://www.itojuku.co.jp/_csslinkbtn/btn-submit.css (expiration not specified)
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https://www.itojuku.co.jp/_csslinkbtn/gyosho_cnv.css (expiration not specified)
https://www.itojuku.co.jp/_csslinkbtn/gyosho_menucnv.css (expiration not specified)
https://www.itojuku.co.jp/_csslinkbtn/intext.css (expiration not specified)
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https://www.itojuku.co.jp/_cssskin/_top_osusumeList.css (expiration not specified)
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https://www.itojuku.co.jp/_module/lib/lib.js (expiration not specified)
https://www.itojuku.co.jp/_module/scripts/bind.js (expiration not specified)
https://www.itojuku.co.jp/_module/styles/bind.css (expiration not specified)
https://www.itojuku.co.jp/_plugins/slide/bdSlideHorizontal/arrow.png (expiration not specified)
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https://www.itojuku.co.jp/_plugins/slide/bdSlideHorizontal/engine.js (expiration not specified)
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https://www.itojuku.co.jp/_src/574/now_img7.png (expiration not specified)
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https://www.itojuku.co.jp/_src/593/now_img2_sp.png (expiration not specified)
https://www.itojuku.co.jp/_src/595/now_img3_sp.png (expiration not specified)
https://www.itojuku.co.jp/_src/597/now_img4_sp.png (expiration not specified)
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https://www.itojuku.co.jp/_src/601/now_img6_sp.png (expiration not specified)
https://www.itojuku.co.jp/_src/603/now_img7_sp.png (expiration not specified)
https://www.itojuku.co.jp/_userdata//images/icon_search.svg (expiration not specified)
https://www.itojuku.co.jp/_userdata/common.css (expiration not specified)
https://www.itojuku.co.jp/_userdata/common.js (expiration not specified)
https://www.itojuku.co.jp/_userdata/images/bar_bg.png (expiration not specified)
https://www.itojuku.co.jp/_userdata/images/icon_book.svg (expiration not specified)
https://www.itojuku.co.jp/_userdata/images/icon_cart.svg (expiration not specified)
https://www.itojuku.co.jp/_userdata/images/icon_mail.svg (expiration not specified)
https://www.itojuku.co.jp/_userdata/images/icon_mypage.svg (expiration not specified)
https://www.itojuku.co.jp/_userdata/libs.min.js (expiration not specified)
https://www.itojuku.co.jp/_userdata/top_index1_bar.png (expiration not specified)
https://www.itojuku.co.jp/_userdata/top_index2_bar.png (expiration not specified)
https://www.itojuku.co.jp/_userdata/top_index3_bar.png (expiration not specified)
https://www.itojuku.co.jp/_userdata/top_index4_bar.png (expiration not specified)
https://www.itojuku.co.jp/hgk-plugin/news/engine.js (expiration not specified)
https://www.itojuku.co.jp/hgk-plugin/news/icon_event.png (expiration not specified)
https://www.itojuku.co.jp/hgk-plugin/news/icon_oshirase.png (expiration not specified)
https://www.itojuku.co.jp/hgk-plugin/news/icon_tokusyu.png (expiration not specified)
https://www.itojuku.co.jp/hgk-plugin/news/style.css (expiration not specified)
https://www.itojuku.co.jp/hgk-plugin/news/underscore-min.js (expiration not specified)
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https://www.googletagmanager.com/gtag/js?id=AW-800524161 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-T295TS (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/119147…4897?v=2.8.32&r=stable (20 minutes)
https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
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priority - 56 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 6 blocking script resources and 51 blocking CSS resources. This causes a delay in rendering your page.

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https://www.itojuku.co.jp/_module/scripts/bind.js
https://www.itojuku.co.jp/_userdata/libs.min.js
https://www.itojuku.co.jp/_userdata/common.js
https://webfont-pub.weblife.me/accessor/script/fon…js?gBaf4X~siMM%3D&aa=1
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https://www.itojuku.co.jp/index.css?1541039344592c0100
https://module.bindsite.jp/type-fonts/css/mplus-fonts.css
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https://www.itojuku.co.jp/_cssskin/_area_side_a.css
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https://www.itojuku.co.jp/_cssskin/_top_osusumeList.css
https://www.itojuku.co.jp/_cssskin/_block_main.css
https://www.itojuku.co.jp/_cssskin/_from-now-on.css
https://www.itojuku.co.jp/_cssskin/_top_index.css
https://www.itojuku.co.jp/_cssskin/_top_news.css
https://www.itojuku.co.jp/_cssskin/_gfooter.css
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https://www.itojuku.co.jp/_cssskin/_learning_style.css
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https://www.itojuku.co.jp/_csslinkbtn/btn-import.css
https://www.itojuku.co.jp/_csslinkbtn/btn-default.css
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https://www.itojuku.co.jp/_csslinkbtn/sisho_nyumon_cnv.css
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https://www.itojuku.co.jp/_csslinkbtn/gyosho_menucnv.css
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https://www.itojuku.co.jp/_csslinkbtn/default_big.css
https://www.itojuku.co.jp/_csslinkbtn/redpink_big.css
https://www.itojuku.co.jp/_csslinkbtn/intext.css
https://www.itojuku.co.jp/_csslinkbtn/shishomenu_pink.css
https://www.itojuku.co.jp/_csslinkbtn/shishomenu_brown.css
https://www.itojuku.co.jp/_csslinkbtn/menured_cnv.css
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https://www.itojuku.co.jp/_csslinkbtn/menu_nocolor.css
https://www.itojuku.co.jp/_csslinkbtn/blue_big.css
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https://www.itojuku.co.jp/_csslinkbtn/shishomenu_green.css
https://www.itojuku.co.jp/_csslinkbtn/text-black.css
https://www.itojuku.co.jp/_csslinkbtn/btn_okinawa.css
https://www.itojuku.co.jp/_userdata/common.css

priority - 52 Enable compression

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Enable compression for the following resources to reduce their transfer size by 511.1KiB (76% reduction).

Compressing https://www.itojuku.co.jp/_module/lib/lib.js could save 208KiB (72% reduction).
Compressing https://www.itojuku.co.jp/_module/styles/bind.css could save 108.8KiB (86% reduction).
Compressing https://www.itojuku.co.jp/_module/scripts/bind.js could save 48.9KiB (75% reduction).
Compressing https://www.itojuku.co.jp/ could save 30.3KiB (80% reduction).
Compressing https://www.itojuku.co.jp/_module/bindicon/style.css could save 29.9KiB (83% reduction).
Compressing https://module.bindsite.jp/type-fonts/css/mplus-fonts.css could save 12.9KiB (93% reduction).
Compressing https://www.itojuku.co.jp/index.css?1541039344592c0100 could save 11.5KiB (87% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/underscore-min.js could save 10.4KiB (64% reduction).
Compressing https://www.itojuku.co.jp/_userdata/common.css could save 9.1KiB (77% reduction).
Compressing https://www.itojuku.co.jp/_dress/a8fd7636cc864b77b…base.css?1541039344583 could save 8.3KiB (85% reduction).
Compressing https://www.itojuku.co.jp/_plugins/slide/bdSlideHorizontal/engine.js could save 8.2KiB (67% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/engine.js could save 3.3KiB (74% reduction).
Compressing https://www.itojuku.co.jp/_userdata/libs.min.js could save 2.5KiB (56% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/product_login/engine.js could save 1.9KiB (67% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/data.php?news_id=1 could save 1.6KiB (62% reduction).
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Compressing https://www.itojuku.co.jp/_cssskin/_top_index.css could save 961B (70% reduction).
Compressing https://www.itojuku.co.jp/_cssskin/_learning_style.css could save 839B (66% reduction).
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Compressing https://www.itojuku.co.jp/_csslinkbtn/text-black.css could save 594B (63% reduction).
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Compressing https://www.itojuku.co.jp/_csslinkbtn/btn-import.css could save 584B (72% reduction).
Compressing https://www.itojuku.co.jp/_csslinkbtn/blue_big.css could save 543B (61% reduction).
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Compressing https://www.itojuku.co.jp/_userdata/images/icon_mypage.svg could save 408B (43% reduction).
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Compressing https://www.itojuku.co.jp/_cssskin/_top_osusumeList.css could save 355B (58% reduction).
Compressing https://www.itojuku.co.jp/hgk-plugin/news/style.css could save 304B (59% reduction).
Compressing https://www.itojuku.co.jp/_userdata//images/icon_search.svg could save 195B (36% reduction).
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Total Resources	147
Number of Hosts	14
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CSS Resources	54

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Mobile Usability Good

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itojuku.co.jp Mobile Resource Breakdown

itojuku.co.jp mobile page usability

itojuku.co.jp Mobile Usability Test Quick Summary

priority - 0 Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

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itojuku.co.jp TRACEROUTE