ndl.go.jp Website Information
Daily Unique Visits: 296,530
Daily Page Views: 2,372,240
Income Per Day: $2,372
Estimated Value: $2,561,760
This website is located in Japan and is using following IP address 163.49.60.95. See the complete list of popular websites hosted in Japan.
ndl.go.jp is registered under .JP top-level domain. Please check other sites in .JP zone.
Website ndl.go.jp is using the following name servers:
- ns2.ndl.go.jp
- ns4.ndl.go.jp
- ns3.ndl.go.jp
- ns.ndl.go.jp
- dns-a.iij.ad.jp
and is probably hosted by IIJ Internet Initiative Japan Inc., JP. See the full list of other websites hosted by IIJ Internet Initiative Japan Inc., JP.
The highest website ndl.go.jp position in Alexa rank database was 4730 and the lowest rank position was 5316. Current position of ndl.go.jp in Alexa rank database is 5139.
Desktop speed score of ndl.go.jp (18/100) is better than the results of 3.49% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of ndl.go.jp (63/100) is better than the results of 9.16% of other sites and means that the page is not mobile-friendly.
Mobile speed score of ndl.go.jp (44/100) is better than the results of 24.22% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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ndl.go.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.
ndl.go.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] NDL.GO.JP
e. [そしきめい] こくりつこっかいとしょかん
f. [組織名] 国立国会図書館
g. [Organization] National Diet Library
k. [組織種別] 政府機関
l. [Organization Type] Government
m. [登録担当者] KS73324JP
n. [技術連絡担当者] SN34994JP
p. [ネームサーバ] dns-a.iij.ad.jp
p. [ネームサーバ] ns.ndl.go.jp
p. [ネームサーバ] ns2.ndl.go.jp
p. [ネームサーバ] ns3.ndl.go.jp
p. [ネームサーバ] ns4.ndl.go.jp
s. [署名鍵]
[状態] Connected (2022/01/31)
[登録年月日] 1995/01/23
[接続年月日] 1995/04/18
[最終更新] 2021/04/14 15:05:17 (JST)
[ 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] NDL.GO.JP
e. [そしきめい] こくりつこっかいとしょかん
f. [組織名] 国立国会図書館
g. [Organization] National Diet Library
k. [組織種別] 政府機関
l. [Organization Type] Government
m. [登録担当者] KS73324JP
n. [技術連絡担当者] SN34994JP
p. [ネームサーバ] dns-a.iij.ad.jp
p. [ネームサーバ] ns.ndl.go.jp
p. [ネームサーバ] ns2.ndl.go.jp
p. [ネームサーバ] ns3.ndl.go.jp
p. [ネームサーバ] ns4.ndl.go.jp
s. [署名鍵]
[状態] Connected (2022/01/31)
[登録年月日] 1995/01/23
[接続年月日] 1995/04/18
[最終更新] 2021/04/14 15:05:17 (JST)
ndl.go.jp server information
Servers Location
ndl.go.jp desktop page speed rank
Last tested: 2019-12-06
Desktop Speed
Bad
18/100
ndl.go.jp Desktop Speed Test Quick Summary
priority - 308Optimize images
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priority - 29Enable compression
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priority - 23Leverage 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:
https://www.ndl.go.jp/default/css/noscript.css (expiration not specified)
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https://www.ndl.go.jp/default/images/bnr_kids.jpg (expiration not specified)
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https://www.ndl.go.jp/default/js/ndlsearch-inside.js (expiration not specified)
https://www.ndl.go.jp/default/js/search.js (expiration not specified)
https://www.ndl.go.jp/default/js/slick.min.js (expiration not specified)
https://www.ndl.go.jp/jp/top/slideshow/__icsFiles/…n0306_2_shikaku_R1.png (expiration not specified)
https://www.ndl.go.jp/jp/top/slideshow/__icsFiles/…/02/slide_hinagiku.jpg (expiration not specified)
https://www.ndl.go.jp/jp/top/slideshow/__icsFiles/…19/09/04/warpslide.jpg (expiration not specified)
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https://cse.google.com/adsense/search/async-ads.js (60 minutes)
https://www.google.com/jsapi (60 minutes)
https://www.google.com/uds/?file=search&v=1&hl=ja (60 minutes)
priority - 20Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 7 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
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https://www.ndl.go.jp/default/js/jquery.js
https://www.ndl.go.jp/default/js/ndlsearch-inside.js
https://www.ndl.go.jp/default/js/slick.min.js
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https://www.ndl.go.jp/default/js/slick.min.js
https://www.ndl.go.jp/default/js/index.js
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Optimize CSS Delivery of the following:
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https://www.ndl.go.jp/default/css/slick.css
https://www.ndl.go.jp/default/css/style.css
https://www.ndl.go.jp/default/css/noscript.css
https://www.google.com/uds/api/search/1.0/bb262118…26c7b45/default+ja.css
https://www.ndl.go.jp/default/css/slick.css
https://www.ndl.go.jp/default/css/style.css
https://www.ndl.go.jp/default/css/noscript.css
https://www.google.com/uds/api/search/1.0/bb262118…26c7b45/default+ja.css
priority - 5Minify 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 45.8KiB (31% reduction).
Minifying https://www.ndl.go.jp/default/css/style.css could save 33.2KiB (27% reduction).
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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 17.4KiB (44% reduction).
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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 4.1KiB (21% reduction).
Minifying https://www.ndl.go.jp/template/g_navi.html could save 4.1KiB (21% reduction).
ndl.go.jp Desktop Resource Breakdown
| Total Resources | 55 |
| Number of Hosts | 5 |
| Static Resources | 50 |
| JavaScript Resources | 9 |
| CSS Resources | 5 |
ndl.go.jp mobile page speed rank
Last tested: 2018-02-04
Mobile Speed
Bad
44/100
ndl.go.jp Mobile Speed Test Quick Summary
priority - 56Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 9 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://ndl.go.jp/common/js/search.js
http://ndl.go.jp/common/js/func.js
http://ndl.go.jp/common/js/ndlsearch-inside.js
http://ndl.go.jp/common/js/tab_change.js
http://ndl.go.jp/common/js/calendar.js
http://ndl.go.jp/common/js/calendar_holiday.js
http://ndl.go.jp/common/js/calendar_summary.js
http://www.google.com/uds/?file=search&v=1&hl=ja
http://www.google.com/uds/api/search/1.0/45e50696e…a3a8fb/default+ja.I.js
http://ndl.go.jp/common/js/func.js
http://ndl.go.jp/common/js/ndlsearch-inside.js
http://ndl.go.jp/common/js/tab_change.js
http://ndl.go.jp/common/js/calendar.js
http://ndl.go.jp/common/js/calendar_holiday.js
http://ndl.go.jp/common/js/calendar_summary.js
http://www.google.com/uds/?file=search&v=1&hl=ja
http://www.google.com/uds/api/search/1.0/45e50696e…a3a8fb/default+ja.I.js
Optimize CSS Delivery of the following:
http://ndl.go.jp/common/css/common.css
http://ndl.go.jp/common/css/search.css
http://www.google.com/cse/style/look/default.css
http://ndl.go.jp/common/css/re_top.css
http://ndl.go.jp/common/css/noscript.css
http://www.google.com/uds/api/search/1.0/45e50696e…0a3a8fb/default+ja.css
http://ndl.go.jp/common/css/search.css
http://www.google.com/cse/style/look/default.css
http://ndl.go.jp/common/css/re_top.css
http://ndl.go.jp/common/css/noscript.css
http://www.google.com/uds/api/search/1.0/45e50696e…0a3a8fb/default+ja.css
priority - 55Leverage 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://ndl.go.jp/common/css/common.css (expiration not specified)
http://ndl.go.jp/common/css/noscript.css (expiration not specified)
http://ndl.go.jp/common/css/re_print.css (expiration not specified)
http://ndl.go.jp/common/css/re_top.css (expiration not specified)
http://ndl.go.jp/common/css/search.css (expiration not specified)
http://ndl.go.jp/common/images/banner_archive.png (expiration not specified)
http://ndl.go.jp/common/images/banner_ca.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_digi.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_hourei.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_jikocho.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_kaigiroku.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_ndlsearch2.jpg (expiration not specified)
http://ndl.go.jp/common/images/banner_reference.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_research.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_warp.jpg (expiration not specified)
http://ndl.go.jp/common/images/bg_header.jpg (expiration not specified)
http://ndl.go.jp/common/images/bg_header_l.jpg (expiration not specified)
http://ndl.go.jp/common/images/bg_title_top.gif (expiration not specified)
http://ndl.go.jp/common/images/bnr_kids.jpg (expiration not specified)
http://ndl.go.jp/common/images/bt_event_off.gif (expiration not specified)
http://ndl.go.jp/common/images/bt_issue_off.gif (expiration not specified)
http://ndl.go.jp/common/images/bt_news_off.gif (expiration not specified)
http://ndl.go.jp/common/images/bt_press_off.gif (expiration not specified)
http://ndl.go.jp/common/images/bt_recruit_off.gif (expiration not specified)
http://ndl.go.jp/common/images/bt_search-b3_off.gif (expiration not specified)
http://ndl.go.jp/common/images/copyright_bg.gif (expiration not specified)
http://ndl.go.jp/common/images/footer_bg.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_arrow.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_arrow_c.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_arrow_down.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_event.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_home.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_issue.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_news.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_point.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_press.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_rss.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_stop.gif (expiration not specified)
http://ndl.go.jp/common/images/logo.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-01_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-02_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-03_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-04_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-05_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-06_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-07_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-title.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-01_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-02_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-03_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-04_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-05_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-06_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-title.jpg (expiration not specified)
http://ndl.go.jp/common/images/tab_top_off.gif (expiration not specified)
http://ndl.go.jp/common/images/tab_top_on.gif (expiration not specified)
http://ndl.go.jp/common/images/top_title1.gif (expiration not specified)
http://ndl.go.jp/common/images/top_title2.gif (expiration not specified)
http://ndl.go.jp/common/images/top_title_important2.gif (expiration not specified)
http://ndl.go.jp/common/js/calendar.js (expiration not specified)
http://ndl.go.jp/common/js/calendar_holiday.js (expiration not specified)
http://ndl.go.jp/common/js/calendar_summary.js (expiration not specified)
http://ndl.go.jp/common/js/func.js (expiration not specified)
http://ndl.go.jp/common/js/ndlsearch-inside.js (expiration not specified)
http://ndl.go.jp/common/js/search.js (expiration not specified)
http://ndl.go.jp/common/js/tab_change.js (expiration not specified)
http://ndl.go.jp/images/title_ndl_online.jpg (expiration not specified)
http://ndl.go.jp/jp/spot/__icsFiles/thumbnail/2017/12/22/ndlbib_2.png (expiration not specified)
http://ndl.go.jp/jp/spot/__icsFiles/thumbnail/2017/12/26/branchsympo.jpg (expiration not specified)
http://ndl.go.jp/jp/spot/__icsFiles/thumbnail/2018/01/12/spot_ips2017.jpg (expiration not specified)
http://cse.google.com/adsense/search/async-ads.js (60 minutes)
http://www.google.com/jsapi (60 minutes)
http://www.google.com/uds/?file=search&v=1&hl=ja (60 minutes)
http://ndl.go.jp/common/css/noscript.css (expiration not specified)
http://ndl.go.jp/common/css/re_print.css (expiration not specified)
http://ndl.go.jp/common/css/re_top.css (expiration not specified)
http://ndl.go.jp/common/css/search.css (expiration not specified)
http://ndl.go.jp/common/images/banner_archive.png (expiration not specified)
http://ndl.go.jp/common/images/banner_ca.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_digi.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_hourei.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_jikocho.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_kaigiroku.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_ndlsearch2.jpg (expiration not specified)
http://ndl.go.jp/common/images/banner_reference.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_research.gif (expiration not specified)
http://ndl.go.jp/common/images/banner_warp.jpg (expiration not specified)
http://ndl.go.jp/common/images/bg_header.jpg (expiration not specified)
http://ndl.go.jp/common/images/bg_header_l.jpg (expiration not specified)
http://ndl.go.jp/common/images/bg_title_top.gif (expiration not specified)
http://ndl.go.jp/common/images/bnr_kids.jpg (expiration not specified)
http://ndl.go.jp/common/images/bt_event_off.gif (expiration not specified)
http://ndl.go.jp/common/images/bt_issue_off.gif (expiration not specified)
http://ndl.go.jp/common/images/bt_news_off.gif (expiration not specified)
http://ndl.go.jp/common/images/bt_press_off.gif (expiration not specified)
http://ndl.go.jp/common/images/bt_recruit_off.gif (expiration not specified)
http://ndl.go.jp/common/images/bt_search-b3_off.gif (expiration not specified)
http://ndl.go.jp/common/images/copyright_bg.gif (expiration not specified)
http://ndl.go.jp/common/images/footer_bg.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_arrow.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_arrow_c.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_arrow_down.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_event.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_home.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_issue.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_news.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_point.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_press.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_rss.gif (expiration not specified)
http://ndl.go.jp/common/images/ico_stop.gif (expiration not specified)
http://ndl.go.jp/common/images/logo.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-01_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-02_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-03_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-04_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-05_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-06_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-07_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu1-title.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-01_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-02_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-03_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-04_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-05_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-06_off.jpg (expiration not specified)
http://ndl.go.jp/common/images/menu2-title.jpg (expiration not specified)
http://ndl.go.jp/common/images/tab_top_off.gif (expiration not specified)
http://ndl.go.jp/common/images/tab_top_on.gif (expiration not specified)
http://ndl.go.jp/common/images/top_title1.gif (expiration not specified)
http://ndl.go.jp/common/images/top_title2.gif (expiration not specified)
http://ndl.go.jp/common/images/top_title_important2.gif (expiration not specified)
http://ndl.go.jp/common/js/calendar.js (expiration not specified)
http://ndl.go.jp/common/js/calendar_holiday.js (expiration not specified)
http://ndl.go.jp/common/js/calendar_summary.js (expiration not specified)
http://ndl.go.jp/common/js/func.js (expiration not specified)
http://ndl.go.jp/common/js/ndlsearch-inside.js (expiration not specified)
http://ndl.go.jp/common/js/search.js (expiration not specified)
http://ndl.go.jp/common/js/tab_change.js (expiration not specified)
http://ndl.go.jp/images/title_ndl_online.jpg (expiration not specified)
http://ndl.go.jp/jp/spot/__icsFiles/thumbnail/2017/12/22/ndlbib_2.png (expiration not specified)
http://ndl.go.jp/jp/spot/__icsFiles/thumbnail/2017/12/26/branchsympo.jpg (expiration not specified)
http://ndl.go.jp/jp/spot/__icsFiles/thumbnail/2018/01/12/spot_ips2017.jpg (expiration not specified)
http://cse.google.com/adsense/search/async-ads.js (60 minutes)
http://www.google.com/jsapi (60 minutes)
http://www.google.com/uds/?file=search&v=1&hl=ja (60 minutes)
priority - 16Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 157.9KiB (66% reduction).
Compressing http://ndl.go.jp/jp/spot/__icsFiles/thumbnail/2018/01/12/spot_ips2017.jpg could save 31.2KiB (85% reduction).
Compressing http://ndl.go.jp/common/images/bg_header.jpg could save 21.6KiB (74% reduction).
Compressing http://ndl.go.jp/common/images/logo.jpg could save 13.8KiB (61% reduction).
Compressing http://ndl.go.jp/common/images/bnr_kids.jpg could save 13.4KiB (75% reduction).
Compressing http://ndl.go.jp/jp/spot/__icsFiles/thumbnail/2017/12/26/branchsympo.jpg could save 8.6KiB (62% reduction).
Compressing http://ndl.go.jp/common/images/menu2-title.jpg could save 7.9KiB (71% reduction).
Compressing http://ndl.go.jp/common/images/menu1-title.jpg could save 6.2KiB (74% reduction).
Compressing http://ndl.go.jp/common/images/banner_ndlsearch2.jpg could save 5KiB (61% reduction).
Compressing http://ndl.go.jp/common/images/menu1-04_off.jpg could save 4.2KiB (66% reduction).
Compressing http://ndl.go.jp/common/images/menu1-07_off.jpg could save 4.1KiB (67% reduction).
Compressing http://ndl.go.jp/common/images/menu2-02_off.jpg could save 3.6KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu1-01_off.jpg could save 3.3KiB (66% reduction).
Compressing http://ndl.go.jp/common/images/menu2-01_off.jpg could save 3.1KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu2-04_off.jpg could save 3.1KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu2-06_off.jpg could save 3.1KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu2-05_off.jpg could save 3KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu1-06_off.jpg could save 2.9KiB (65% reduction).
Compressing http://ndl.go.jp/images/title_ndl_online.jpg could save 2.9KiB (41% reduction).
Compressing http://ndl.go.jp/common/images/menu2-03_off.jpg could save 2.8KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu1-02_off.jpg could save 2.5KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu1-03_off.jpg could save 2.3KiB (64% reduction).
Compressing http://ndl.go.jp/common/images/banner_warp.jpg could save 2.3KiB (42% reduction).
Compressing http://ndl.go.jp/common/images/menu1-05_off.jpg could save 1.9KiB (63% reduction).
Compressing http://ndl.go.jp/common/images/banner_archive.png could save 1.3KiB (19% reduction).
Compressing http://ndl.go.jp/common/images/bg_header_l.jpg could save 1.2KiB (66% reduction).
Compressing http://ndl.go.jp/common/images/bt_search-b3_off.gif could save 983B (65% reduction).
Compressing http://ndl.go.jp/common/images/tab_top_on.gif could save 365B (35% reduction).
Compressing http://ndl.go.jp/common/images/bt_press_off.gif could save 298B (25% reduction).
Compressing http://ndl.go.jp/common/images/bg_title_top.gif could save 240B (59% reduction).
Compressing http://ndl.go.jp/common/images/bt_news_off.gif could save 226B (29% reduction).
Compressing http://ndl.go.jp/common/images/bt_issue_off.gif could save 209B (23% reduction).
Compressing http://ndl.go.jp/common/images/bt_event_off.gif could save 191B (14% reduction).
Compressing http://ndl.go.jp/common/images/bt_recruit_off.gif could save 169B (16% reduction).
Compressing http://ndl.go.jp/common/images/bg_header.jpg could save 21.6KiB (74% reduction).
Compressing http://ndl.go.jp/common/images/logo.jpg could save 13.8KiB (61% reduction).
Compressing http://ndl.go.jp/common/images/bnr_kids.jpg could save 13.4KiB (75% reduction).
Compressing http://ndl.go.jp/jp/spot/__icsFiles/thumbnail/2017/12/26/branchsympo.jpg could save 8.6KiB (62% reduction).
Compressing http://ndl.go.jp/common/images/menu2-title.jpg could save 7.9KiB (71% reduction).
Compressing http://ndl.go.jp/common/images/menu1-title.jpg could save 6.2KiB (74% reduction).
Compressing http://ndl.go.jp/common/images/banner_ndlsearch2.jpg could save 5KiB (61% reduction).
Compressing http://ndl.go.jp/common/images/menu1-04_off.jpg could save 4.2KiB (66% reduction).
Compressing http://ndl.go.jp/common/images/menu1-07_off.jpg could save 4.1KiB (67% reduction).
Compressing http://ndl.go.jp/common/images/menu2-02_off.jpg could save 3.6KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu1-01_off.jpg could save 3.3KiB (66% reduction).
Compressing http://ndl.go.jp/common/images/menu2-01_off.jpg could save 3.1KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu2-04_off.jpg could save 3.1KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu2-06_off.jpg could save 3.1KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu2-05_off.jpg could save 3KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu1-06_off.jpg could save 2.9KiB (65% reduction).
Compressing http://ndl.go.jp/images/title_ndl_online.jpg could save 2.9KiB (41% reduction).
Compressing http://ndl.go.jp/common/images/menu2-03_off.jpg could save 2.8KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu1-02_off.jpg could save 2.5KiB (65% reduction).
Compressing http://ndl.go.jp/common/images/menu1-03_off.jpg could save 2.3KiB (64% reduction).
Compressing http://ndl.go.jp/common/images/banner_warp.jpg could save 2.3KiB (42% reduction).
Compressing http://ndl.go.jp/common/images/menu1-05_off.jpg could save 1.9KiB (63% reduction).
Compressing http://ndl.go.jp/common/images/banner_archive.png could save 1.3KiB (19% reduction).
Compressing http://ndl.go.jp/common/images/bg_header_l.jpg could save 1.2KiB (66% reduction).
Compressing http://ndl.go.jp/common/images/bt_search-b3_off.gif could save 983B (65% reduction).
Compressing http://ndl.go.jp/common/images/tab_top_on.gif could save 365B (35% reduction).
Compressing http://ndl.go.jp/common/images/bt_press_off.gif could save 298B (25% reduction).
Compressing http://ndl.go.jp/common/images/bg_title_top.gif could save 240B (59% reduction).
Compressing http://ndl.go.jp/common/images/bt_news_off.gif could save 226B (29% reduction).
Compressing http://ndl.go.jp/common/images/bt_issue_off.gif could save 209B (23% reduction).
Compressing http://ndl.go.jp/common/images/bt_event_off.gif could save 191B (14% reduction).
Compressing http://ndl.go.jp/common/images/bt_recruit_off.gif could save 169B (16% reduction).
priority - 9Enable 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 85.8KiB (75% reduction).
Compressing http://ndl.go.jp/common/js/calendar.js could save 24KiB (73% reduction).
Compressing http://ndl.go.jp/ could save 17.9KiB (73% reduction).
Compressing http://ndl.go.jp/common/css/re_top.css could save 8.9KiB (80% reduction).
Compressing http://ndl.go.jp/common/js/func.js could save 7.9KiB (72% reduction).
Compressing http://ndl.go.jp/common/css/common.css could save 5.8KiB (76% reduction).
Compressing http://ndl.go.jp/common/js/search.js could save 5.3KiB (74% reduction).
Compressing http://ndl.go.jp/common/css/search.css could save 5KiB (81% reduction).
Compressing http://ndl.go.jp/common/js/calendar_summary.js could save 4.7KiB (87% reduction).
Compressing http://ndl.go.jp/common/js/ndlsearch-inside.js could save 2.2KiB (78% reduction).
Compressing http://ndl.go.jp/common/js/calendar_holiday.js could save 1.7KiB (77% reduction).
Compressing http://ndl.go.jp/common/css/re_print.css could save 1.4KiB (65% reduction).
Compressing http://ndl.go.jp/common/js/tab_change.js could save 880B (61% reduction).
Compressing http://ndl.go.jp/common/css/noscript.css could save 149B (37% reduction).
Compressing http://ndl.go.jp/ could save 17.9KiB (73% reduction).
Compressing http://ndl.go.jp/common/css/re_top.css could save 8.9KiB (80% reduction).
Compressing http://ndl.go.jp/common/js/func.js could save 7.9KiB (72% reduction).
Compressing http://ndl.go.jp/common/css/common.css could save 5.8KiB (76% reduction).
Compressing http://ndl.go.jp/common/js/search.js could save 5.3KiB (74% reduction).
Compressing http://ndl.go.jp/common/css/search.css could save 5KiB (81% reduction).
Compressing http://ndl.go.jp/common/js/calendar_summary.js could save 4.7KiB (87% reduction).
Compressing http://ndl.go.jp/common/js/ndlsearch-inside.js could save 2.2KiB (78% reduction).
Compressing http://ndl.go.jp/common/js/calendar_holiday.js could save 1.7KiB (77% reduction).
Compressing http://ndl.go.jp/common/css/re_print.css could save 1.4KiB (65% reduction).
Compressing http://ndl.go.jp/common/js/tab_change.js could save 880B (61% reduction).
Compressing http://ndl.go.jp/common/css/noscript.css could save 149B (37% reduction).
priority - 3Minify 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 25.8KiB (46% reduction).
Minifying http://ndl.go.jp/common/js/calendar.js could save 20.5KiB (62% reduction).
Minifying http://ndl.go.jp/common/js/func.js could save 2.8KiB (27% reduction).
Minifying http://ndl.go.jp/common/js/search.js could save 1.2KiB (17% reduction).
Minifying http://ndl.go.jp/common/js/tab_change.js could save 694B (49% reduction).
Minifying http://ndl.go.jp/common/js/calendar_holiday.js could save 398B (18% reduction).
Minifying http://ndl.go.jp/common/js/ndlsearch-inside.js could save 307B (11% reduction).
Minifying http://ndl.go.jp/common/js/func.js could save 2.8KiB (27% reduction).
Minifying http://ndl.go.jp/common/js/search.js could save 1.2KiB (17% reduction).
Minifying http://ndl.go.jp/common/js/tab_change.js could save 694B (49% reduction).
Minifying http://ndl.go.jp/common/js/calendar_holiday.js could save 398B (18% reduction).
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priority - 1Minify CSS
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Minify CSS for the following resources to reduce their size by 9.5KiB (30% reduction).
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ndl.go.jp Mobile Resource Breakdown
| Total Resources | 82 |
| Number of Hosts | 4 |
| Static Resources | 77 |
| JavaScript Resources | 11 |
| CSS Resources | 7 |
ndl.go.jp mobile page usability
Last tested: 2018-02-04
Mobile Usability
Bad
63/100
ndl.go.jp Mobile Usability Test Quick Summary
priority - 40Use legible font sizes
The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.
The following text fragments have a small font size. Increase the font size to make them more legible.
国立国会図書館について and 18 others render only 5 pixels tall (12 CSS pixels).powered by renders only 4 pixels tall (11 CSS pixels).これからのイベント・展示会 and 1 others render only 5 pixels tall (14 CSS pixels).国立国会図書館オンラインにログインできない場合は and 14 others render only 5 pixels tall (13 CSS pixels).国立国会図書館ホームページと…日（月）にリニューアルします and 6 others render only 5 pixels tall (13 CSS pixels).すべての新着情報 renders only 5 pixels tall (13 CSS pixels).2018年1月30日 and 5 others render only 5 pixels tall (13 CSS pixels).展示会「オランダの金の筆と銀…書館）（付・プレスリリース） and 13 others render only 5 pixels tall (13 CSS pixels).もっとみる renders only 5 pixels tall (13 CSS pixels).支部図書館制度70周年を記念…た複数の視座から議論します。 and 2 others render only 5 pixels tall (13 CSS pixels).東京本館 renders only 5 pixels tall (13 CSS pixels).国際子ども and 2 others render only 5 pixels tall (13 CSS pixels).開館カレンダー renders only 5 pixels tall (13 CSS pixels).2018年 2月 renders only 5 pixels tall (12 CSS pixels).翌月 renders only 5 pixels tall (12 CSS pixels).日 and 6 others render only 5 pixels tall (12 CSS pixels).10 and 28 others render only 5 pixels tall (12 CSS pixels).(11) and 5 others render only 5 pixels tall (12 CSS pixels).＜( )括弧は休館日＞ renders only 5 pixels tall (13 CSS pixels).利用時間・休館日のページへ renders only 5 pixels tall (13 CSS pixels).2018年1月23日(火)～2018年2月10日(土) and 4 others render only 5 pixels tall (13 CSS pixels).国立国会図書館ホーム renders only 5 pixels tall (13 CSS pixels).Copyright © 20…ghts Reserved. renders only 5 pixels tall (13 CSS pixels).priority - 10Configure the viewport
Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.
priority - 10Size 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="#contents_c">本文へ</a> and 13 others are close to other tap targets.The tap target
<input id="gsc-i-id1" type="text" name="search" class="gsc-input"> is close to 2 other tap targets.The tap target
<input type="button" class="gsc-search-button"> is close to 3 other tap targets.The tap target
<a href="/jp/service/index.html"></a> and 12 others are close to other tap targets.The tap target
<input id="ndlsearchbox_top" type="text" class="contents_searchKeyword"> is close to 1 other tap targets.The tap target
<input id="submit_top" type="image" class="changeImage"> is close to 2 other tap targets.The tap target
<a href="/jp/aboutus/index.html">国立国会図書館について</a> and 14 others are close to other tap targets.The tap target
<a href="http://kn.ndl.go.jp/"></a> and 8 others are close to other tap targets.The tap target
<a href="http://warp.da.ndl.go.jp/"></a> is close to 2 other tap targets.The tap target
<a href="/jp/rss/update.xml"></a> is close to 1 other tap targets.The tap target
<a id="toggle1" href="javascript:dis…1','toggle1');" class="off">もっとみる</a> is close to 1 other tap targets.The tap target
<a href="#w3c">東京本館</a> is close to 1 other tap targets.The tap target
<a href="#xhtml">関西館</a> is close to 1 other tap targets.The tap target
<a href="http://www.kod…ji2017-04.html">子どもを健やかに育てる本20…出版物）（国際子ども図書館）</a> and 4 others are close to other tap targets.ndl.go.jp HTML validation
Errors
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Line: 1 Column: - 2
"...<?xml version="1..."
"...<?xml version="1..."
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Line: 2 Column: 39 - 121
"...="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html..."
"...="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html..."
Attribute “xmlns:aria” not allowed here.
Line: 3 Column: 122 - 135
"...onal.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:aria="https://www.w3.org/MarkUp/SCHEMA/aria-attributes-1.xsd" xml:lang="ja" lang="ja"> <head..."
"...onal.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:aria="https://www.w3.org/MarkUp/SCHEMA/aria-attributes-1.xsd" xml:lang="ja" lang="ja"> <head..."
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Line: 5 Column: 1 - 51
"..."> <head> <meta http-equiv="content-language" content="ja" /> <meta..."
"..."> <head> <meta http-equiv="content-language" content="ja" /> <meta..."
Bad value “content-style-type” for attribute “http-equiv” on element “meta”.
Line: 7 Column: 1 - 59
"...utf-8" /> <meta http-equiv="content-style-type" content="text/css" /> <meta..."
"...utf-8" /> <meta http-equiv="content-style-type" content="text/css" /> <meta..."
Bad value “content-script-type” for attribute “http-equiv” on element “meta”.
Line: 8 Column: 1 - 67
"...t/css" /> <meta http-equiv="content-script-type" content="text/javascript" /> <meta..."
"...t/css" /> <meta http-equiv="content-script-type" content="text/javascript" /> <meta..."
Attribute “value” not allowed on element “input” at this point.
Line: 111 Column: 13 - 108
"... <input type="image" class="submit_top" value="検索" src="/default/images/search_w.png" alt="検索" /> ..." Line: 144 Column: 1 - 96
"...op_wrap"> <input type="image" class="submit_top" value="検索" src="/default/images/search_w.png" alt="検索" /> </div..."
"... <input type="image" class="submit_top" value="検索" src="/default/images/search_w.png" alt="検索" /> ..." Line: 144 Column: 1 - 96
"...op_wrap"> <input type="image" class="submit_top" value="検索" src="/default/images/search_w.png" alt="検索" /> </div..."
Warnings
Attribute with the local name “xmlns:aria” is not serializable as XML 1.0.
Line: 3 Column: 122 - 135
"...onal.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:aria="https://www.w3.org/MarkUp/SCHEMA/aria-attributes-1.xsd" xml:lang="ja" lang="ja"> <head..."
"...onal.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:aria="https://www.w3.org/MarkUp/SCHEMA/aria-attributes-1.xsd" xml:lang="ja" lang="ja"> <head..."
The “type” attribute is unnecessary for JavaScript resources.
Line: 21 Column: 1 - 59
"...="all" /> <script type="text/javascript" src="/default/js/search.js"></scri..." Line: 22 Column: 1 - 60
"...</script> <script type="text/javascript" src="//www.google.com/jsapi"></scri..." Line: 23 Column: 1 - 59
"...</script> <script type="text/javascript" src="/default/js/jquery.js"></scri..." Line: 24 Column: 1 - 69
".../script> <script type="text/javascript" src="/default/js/ndlsearch-inside.js"></scri..." Line: 25 Column: 1 - 62
"...</script> <script type="text/javascript" src="/default/js/slick.min.js"></scri..." Line: 26 Column: 1 - 58
"...</script> <script type="text/javascript" src="/default/js/index.js"></scri..." Line: 76 Column: 7 - 37
"...iv> <script type="text/javascript"> ..." Line: 120 Column: 7 - 37
"...iv> <script type="text/javascript"> ..."
"...="all" /> <script type="text/javascript" src="/default/js/search.js"></scri..." Line: 22 Column: 1 - 60
"...</script> <script type="text/javascript" src="//www.google.com/jsapi"></scri..." Line: 23 Column: 1 - 59
"...</script> <script type="text/javascript" src="/default/js/jquery.js"></scri..." Line: 24 Column: 1 - 69
".../script> <script type="text/javascript" src="/default/js/ndlsearch-inside.js"></scri..." Line: 25 Column: 1 - 62
"...</script> <script type="text/javascript" src="/default/js/slick.min.js"></scri..." Line: 26 Column: 1 - 58
"...</script> <script type="text/javascript" src="/default/js/index.js"></scri..." Line: 76 Column: 7 - 37
"...iv> <script type="text/javascript"> ..." Line: 120 Column: 7 - 37
"...iv> <script type="text/javascript"> ..."
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
Line: 31 Column: 22 - 39
"...="hidden"><a name="pagetop">このページの..."
"...="hidden"><a name="pagetop">このページの..."
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ndl.go.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.
ndl.go.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.