itmedia.co.jp Website Information

Daily Unique Visits: 479,053

Daily Page Views: 3,832,424

Income Per Day: $3,832

Estimated Value: $4,138,560

This website is located in Japan and is using following IP address 52.69.169.128. See the complete list of popular websites hosted in Japan.

itmedia.co.jp is registered under .JP top-level domain. Please check other sites in .JP zone.

Website itmedia.co.jp is using the following name servers:

ns-1227.awsdns-25.org
ns-1806.awsdns-33.co.uk
ns-909.awsdns-49.net
ns-99.awsdns-12.com

and is probably hosted by AMAZON-02 - Amazon.com, Inc., US. See the full list of other websites hosted by AMAZON-02 - Amazon.com, Inc., US.

The highest website itmedia.co.jp position in Alexa rank database was 3142 and the lowest rank position was 3237. Current position of itmedia.co.jp in Alexa rank database is 3181.

Desktop speed score of itmedia.co.jp (78/100) is better than the results of 65.98% of other sites and shows that the page desktop performance can be improved.

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

Mobile speed score of itmedia.co.jp (61/100) is better than the results of 57.04% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

itmedia.co.jp Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.

itmedia.co.jp whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

[ JPRS database provides information on network administration. Its use is ]
[ restricted to network administration purposes. For further information, ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]

Domain Information: [ドメイン情報]
a. [ドメイン名] ITMEDIA.CO.JP
e. [そしきめい] あいてぃめでぃあかぶしきがいしゃ
f. [組織名] アイティメディア株式会社
g. [Organization] ITmedia Inc.
k. [組織種別] 株式会社
l. [Organization Type] corporation
m. [登録担当者] TO33334JP
n. [技術連絡担当者] YN42899JP
p. [ネームサーバ] ns-99.awsdns-12.com
p. [ネームサーバ] ns-1806.awsdns-33.co.uk
p. [ネームサーバ] ns-1227.awsdns-25.org
p. [ネームサーバ] ns-909.awsdns-49.net
s. [署名鍵]
[状態] Connected (2021/06/30)
[登録年月日] 2005/06/13
[接続年月日] 2005/06/13
[最終更新] 2020/07/01 01:07:51 (JST)

itmedia.co.jp server information

Servers Location

itmedia.co.jp desktop page speed rank

Last tested: 2018-07-24

Desktop Speed Medium

78/100

itmedia.co.jp Desktop Speed Test Quick Summary

priority - 8Optimize images

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Optimize the following images to reduce their size by 81.1KiB (43% reduction).

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priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 21 blocking script resources and 7 blocking CSS resources. This causes a delay in rendering your page.

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http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js
http://fc.itmedia.co.jp/fpcookie?site_id=itm_
http://www.itmedia.co.jp/js/scAccount.js
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http://cdn.cxense.com/cx.js
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Optimize CSS Delivery of the following:

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http://www.itmedia.co.jp/css/ad.css?201806141159
http://www.itmedia.co.jp/css/top.css?201104011055
http://www.itmedia.co.jp/css/top/base.css?201806141143
http://www.itmedia.co.jp/css/top/ad.css?201712131433
http://www.itmedia.co.jp/css/top/top.css?201406191729
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priority - 8Leverage 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:

http://cx.api.itmedia.co.jp/v1.js (expiration not specified)
http://tr.api.itmedia.jp/v1.js (expiration not specified)
https://syndication.twitter.com/settings (10 minutes)
http://www.itmedia.co.jp/json/top/rss_artRank2.json (15 minutes)
http://connect.facebook.net/en_US/fbevents.js (20 minutes)
http://connect.facebook.net/ja_JP/sdk.js (20 minutes)
https://connect.facebook.net/signals/config/185005…2834?v=2.8.23&r=stable (20 minutes)
http://platform.twitter.com/widgets.js (30 minutes)
https://apis.google.com/js/plusone.js (30 minutes)
https://apis.google.com/js/rpc:shindig_random.js?onload=init (30 minutes)
http://api.popin.cc/popin_discovery5-min.js (60 minutes)
http://api.popin.cc/searchbox/itmedia.js (60 minutes)
http://api.popin.cc/td_js_sdk_171.js (60 minutes)
http://cdn.cxense.com/cx.js (60 minutes)
http://pagead2.googlesyndication.com/pagead/show_ads.js (60 minutes)
http://cs.nakanohito.jp/b3/bi.js (3 hours)
https://cdn-ak.b.st-hatena.com/images/entry-button/standard.svg (3.3 hours)

priority - 2Minify JavaScript

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priority - 1Enable compression

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priority - 0Minify CSS

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itmedia.co.jp Desktop Resource Breakdown

Total Resources	154
Number of Hosts	37
Static Resources	90
JavaScript Resources	72
CSS Resources	9

itmedia.co.jp mobile page speed rank

Last tested: 2018-08-24

Mobile Speed Bad

61/100

itmedia.co.jp Mobile Speed Test Quick Summary

priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 6 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://www.itmedia.co.jp/js/spv/movePC2SP.js?date=201802131251
http://www.itmedia.co.jp/js/spv/html5base.js?date=201803221616
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http://dlv.itmedia.jp/adsv/v1?posall=CBOX&oe=shift…&ref=&x-cxsegids=&t=js

Optimize CSS Delivery of the following:

http://www.itmedia.co.jp/css/spv/html5base_v2.css?date=201808221537

priority - 13Optimize images

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

Optimize the following images to reduce their size by 126.7KiB (54% reduction).

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priority - 12Leverage 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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http://serval-j.adtdp.com/i.js (expiration not specified)
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http://yads.c.yimg.jp/js/yads-async.js (7.8 minutes)
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http://s.yimg.jp/images/advertising/common/js/iicon.min.js?2018082401 (10 minutes)
http://connect.facebook.net/en_US/fbevents.js (20 minutes)
http://connect.facebook.net/ja_JP/sdk.js (20 minutes)
https://connect.facebook.net/signals/config/185005…2834?v=2.8.25&r=stable (20 minutes)
http://cdn.cxense.com/cx.js (60 minutes)
http://pagead2.googlesyndication.com/pagead/show_ads.js (60 minutes)
https://gum.criteo.com/sync?c=46&r=2&j=handleData (60 minutes)
http://cs.nakanohito.jp/b3/bi.js (3 hours)
https://static.zucks.net.zimg.jp/image/2018/07/10/opt/102152_phpBXznvc.jpeg (4 hours)

priority - 10Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://itmedia.co.jp/
http://www.itmedia.co.jp/
http://www.itmedia.co.jp/spv/

priority - 1Enable compression

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priority - 1Minify JavaScript

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priority - 0Minify HTML

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Minify HTML for the following resources to reduce their size by 2.5KiB (26% reduction).

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itmedia.co.jp Mobile Resource Breakdown

Total Resources	86
Number of Hosts	49
Static Resources	39
JavaScript Resources	50
CSS Resources	1

itmedia.co.jp mobile page usability

Last tested: 2018-08-24

Mobile Usability Good

99/100

itmedia.co.jp Mobile Usability Test Quick Summary

priority - 0Size 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.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="//www.itmedia.co.jp/news/spv/">NEWS</a> and 3 others are close to other tap targets.

itmedia.co.jp HTML validation

Errors

Legacy encoding “shift_jis” used. Documents must use UTF-8.

Line: Column: -
"......"

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

Line: 24 Column: 1 - 102
"... <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <htm..."

Bad value “text/html;charset=shift_jis” for attribute “content” on element “meta”: “charset=” must be followed by “utf-8”.

Line: 27 Column: 1 - 70
"...p"><head> <meta http-equiv="content-type" content="text/html;charset=shift_jis"> <meta..."

Bad value “content-style-type” for attribute “http-equiv” on element “meta”.

Line: 28 Column: 1 - 57
"...ift_jis"> <meta http-equiv="content-style-type" content="text/css"> <meta..."

Bad value “content-script-type” for attribute “http-equiv” on element “meta”.

Line: 29 Column: 1 - 65
"...ext/css"> <meta http-equiv="content-script-type" content="text/javascript"> <me..."

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 195 Column: 1 - 7
"...BodyIn"> <style> #mast..." Line: 1765 Column: 1 - 7
"...> </div> <style>.youtu..." Line: 1861 Column: 1 - 7
"...ion --> <style> #glob..."

The “align” attribute on the “img” element is obsolete. Use CSS instead.

Line: 345 Column: 132 - 283
"...非表示にするには"><img src="//image.itmedia.co.jp/news/articles/2008/10/top_news021.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 365 Column: 152 - 303
"...搭載最後の端末に"><img src="//image.itmedia.co.jp/news/articles/2008/10/top_news020.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 393 Column: 156 - 309
"...日本語入力が快適"><img src="//image.itmedia.co.jp/mobile/articles/2008/10/top_news011.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 413 Column: 146 - 301
"...何をしたいのか？"><img src="//image.itmedia.co.jp/business/articles/2008/10/top_news017.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 433 Column: 151 - 302
"...ケモンがレイドに"><img src="//image.itmedia.co.jp/news/articles/2008/09/top_news039.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 453 Column: 151 - 301
"...020年最新版】"><img src="//image.itmedia.co.jp/fav/articles/2008/09/top_news033.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 1230 Column: 126 - 277
"...非表示にするには"><img src="//image.itmedia.co.jp/news/articles/2008/10/top_news021.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 1248 Column: 137 - 294
"...で普及しない理由"><img src="//image.itmedia.co.jp/enterprise/articles/2008/10/top_news018.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 1274 Column: 145 - 295
"...020年最新版】"><img src="//image.itmedia.co.jp/fav/articles/2008/09/top_news033.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 1290 Column: 150 - 303
"...日本語入力が快適"><img src="//image.itmedia.co.jp/mobile/articles/2008/10/top_news011.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 1305 Column: 129 - 282
"...ATX版が登場！"><img src="//image.itmedia.co.jp/pcuser/articles/2008/08/top_news023.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 1320 Column: 140 - 295
"...何をしたいのか？"><img src="//image.itmedia.co.jp/business/articles/2008/10/top_news017.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..." Line: 1343 Column: 132 - 281
"...づくり」の可能性"><img src="//image.itmedia.co.jp/mn/articles/2008/07/top_news064.jpg" width="120" height="90" align="left" hspace="2" vspace="2" border="0" alt="icon"></a></..."

The “hspace” attribute on the “img” element is obsolete. Use CSS instead.

The “vspace” attribute on the “img” element is obsolete. Use CSS instead.

Element “ul” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)

Line: 1391 Column: 1 - 24
"...ュース ▼</a> <ul id="subTopBox-News"> <li>≫..." Line: 1417 Column: 1 - 30
"...ライズ ▼</a> <ul id="subTopBox-Enterprise"> <li>&..." Line: 1466 Column: 1 - 30
"...get ▼</a> <ul id="subTopBox-TechTarget"> <li>≫..." Line: 1506 Column: 1 - 29
"...ィング ▼</a> <ul id="subTopBox-Marketing"> <li>≫..." Line: 1580 Column: 1 - 28
"...ライン ▼</a> <ul id="subTopBox-Business"> <li>≫..." Line: 1617 Column: 1 - 28
"...＠IT ▼</a> <ul id="subTopBox-Atmarkit"> <li>&..."

Bad element name “gcse:searchbox-only”: Code point “U+003A” is not allowed

Line: 1762 Column: 1 - 21
"...</script> <gcse:searchbox-only></gcse..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 1868 Column: 70 - 158
"...a.co.jp/"><img src="//image.itmedia.co.jp/images/logo/170_itmedia_bgw.gif" width="170" height="28"></a>IT..." Line: 2096 Column: 11 - 2
"...<noscript><img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=185005748502834&ev=PageView&noscript=1" /></nosc..."

Warnings

The “charset” attribute on the “script” element is obsolete.

Line: 81 Column: 1 - 89
"...a="all"> <script src="//ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js" charset="UTF-8"></scri..." Line: 1829 Column: 1 - 113
"...atebu --> <script type="text/javascript" src="https://b.st-hatena.com/js/bookmark_button.js" charset="utf-8" async="async"></scri..." Line: 1854 Column: 1 - 89
"...> </div> <script src="//api.popin.cc/searchbox/itmedia.js" type="text/javascript" charset="UTF-8"></scri..."

The “type” attribute is unnecessary for JavaScript resources.

Line: 98 Column: 1 - 62
".../script> <script type="text/javascript" src="/js/base.js?201906041205"></scri..." Line: 99 Column: 1 - 60
"...</script> <script type="text/javascript" src="/js/ad.js?201302061956"></scri..." Line: 100 Column: 1 - 61
"...</script> <script type="text/javascript" src="/js/top.js?201010281942"></scri..." Line: 101 Column: 1 - 78
"...</script> <script type="text/javascript" src="/js/top/base.js?201502232106" async defer></scri..." Line: 102 Column: 1 - 76
"...</script> <script type="text/javascript" src="/js/top/ad.js?201107191418" async defer></scri..." Line: 103 Column: 1 - 77
"...</script> <script type="text/javascript" src="/js/top/top.js?201107191418" async defer></scri..." Line: 166 Column: 1 - 31
"...script> <script type="text/javascript"> var d..." Line: 1365 Column: 1 - 71
"...t"> <ul> <script type="text/javascript" src="/js/top/rss_channelArt_altblog.js"></scri..." Line: 1458 Column: 1 - 71
"...st"><ul> <script type="text/javascript" src="/js/top/rss_channelArt_altblog.js"></scri..." Line: 1771 Column: 1 - 78
"...g"></div> <script type="text/javascript" src="/json/top/rss_artRank2.json" async defer></scri..." Line: 1829 Column: 1 - 113
"...atebu --> <script type="text/javascript" src="https://b.st-hatena.com/js/bookmark_button.js" charset="utf-8" async="async"></scri..." Line: 1831 Column: 1 - 31
"...-- g+ --> <script type="text/javascript"> win..." Line: 1854 Column: 1 - 89
"...> </div> <script src="//api.popin.cc/searchbox/itmedia.js" type="text/javascript" charset="UTF-8"></scri..." Line: 2020 Column: 1 - 31
"...co.jp --> <script type="text/javascript"> var _..."

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Empty heading.

Line: 347 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 367 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 395 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 435 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 455 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 479 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 488 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 497 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 516 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 525 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 534 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 553 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 590 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 599 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 608 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 617 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 626 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 635 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 653 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 662 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 671 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 680 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 698 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 716 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 734 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 743 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 752 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 761 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 770 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 779 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 788 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 797 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 815 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 824 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 860 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 869 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 878 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 887 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 906 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 915 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 924 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 933 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 942 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 951 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 960 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 978 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 987 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 996 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 1005 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 1014 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 1023 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 1032 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 1041 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 1050 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 1059 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 1077 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 1095 Column: 29 - 32
"...SubTitle"><h5></h5><..." Line: 1131 Column: 29 - 32
"...SubTitle"><h5></h5><..."

Element name “gcse:searchbox-only” cannot be represented as XML 1.0.

Line: 1762 Column: 1 - 21
"...</script> <gcse:searchbox-only></gcse..."

The “language” attribute on the “script” element is obsolete. You can safely omit it.

Line: 1895 Column: 1 - 67
"...e.com --> <script language="JavaScript" src="/include/sc/s_code.js?20170501"></scri..." Line: 1896 Column: 1 - 30
"...</script> <script language="JavaScript"><!-- /..." Line: 1950 Column: 1 - 30
"...</script> <script language="JavaScript"><!-- i..."

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itmedia.co.jp Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

itmedia.co.jp TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.

ITMEDIA.CO.JP IT総合情報ポータル「ITmedia」Home

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itmedia.co.jp desktop page speed rank

itmedia.co.jp Desktop Speed Test Quick Summary

priority - 8Optimize images

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

Optimize the following images to reduce their size by 81.1KiB (43% reduction).

priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 21 blocking script resources and 7 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 8Leverage 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:

priority - 2Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 16.9KiB (28% reduction).

priority - 1Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 7.7KiB (65% reduction).

priority - 0Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 1.5KiB (15% reduction).

itmedia.co.jp Desktop Resource Breakdown

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itmedia.co.jp Mobile Speed Test Quick Summary

priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 6 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 13Optimize images

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

Optimize the following images to reduce their size by 126.7KiB (54% reduction).

priority - 12Leverage 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:

priority - 10Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

priority - 1Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 10.1KiB (60% reduction).

priority - 1Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 7KiB (25% reduction).

priority - 0Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 2.5KiB (26% reduction).

itmedia.co.jp Mobile Resource Breakdown

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itmedia.co.jp Mobile Usability Test Quick Summary

priority - 0Size 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.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

itmedia.co.jp HTML validation

Errors

Legacy encoding “shift_jis” used. Documents must use UTF-8.

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

Bad value “text/html;charset=shift_jis” for attribute “content” on element “meta”: “charset=” must be followed by “utf-8”.

Bad value “content-style-type” for attribute “http-equiv” on element “meta”.

Bad value “content-script-type” for attribute “http-equiv” on element “meta”.

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

The “align” attribute on the “img” element is obsolete. Use CSS instead.

The “hspace” attribute on the “img” element is obsolete. Use CSS instead.

The “vspace” attribute on the “img” element is obsolete. Use CSS instead.

Element “ul” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)

Bad element name “gcse:searchbox-only”: Code point “U+003A” is not allowed

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Warnings

The “charset” attribute on the “script” element is obsolete.

The “type” attribute is unnecessary for JavaScript resources.

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Empty heading.

Element name “gcse:searchbox-only” cannot be represented as XML 1.0.

The “language” attribute on the “script” element is obsolete. You can safely omit it.