sei-info.co.jp Website Information
Daily Unique Visits: 1,004
Daily Page Views: 2,008
Income Per Day: $6
Estimated Value: $1,440
This website is located in Japan and is using following IP address 159.28.116.60. See the complete list of popular websites hosted in Japan.
sei-info.co.jp is registered under .JP top-level domain. Please check other sites in .JP zone.
Website sei-info.co.jp is using the following name servers:
- ns02.sei.co.jp
- seigate.sei.co.jp
- seigate-y.sei.co.jp
and is probably hosted by SO-NET So-net Entertainment Corporation, JP. See the full list of other websites hosted by SO-NET So-net Entertainment Corporation, JP.
The highest website sei-info.co.jp position in Alexa rank database was 20656 and the lowest rank position was 999716. Current position of sei-info.co.jp in Alexa rank database is 714371.
Desktop speed score of sei-info.co.jp (46/100) is better than the results of 19.93% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of sei-info.co.jp (96/100) is better than the results of 46.59% of other sites and means that the page is mobile-friendly.
Mobile speed score of sei-info.co.jp (58/100) is better than the results of 50.23% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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sei-info.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.
sei-info.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] SEI-INFO.CO.JP
e. [そしきめい] すみともでんこうじょうほうしすてむかぶしき
かいしゃ
f. [組織名] 住友電工情報システム株式会社
g. [Organization] Sumitomo Electric Information Systems Co.,Ltd.
k. [組織種別] 株式会社
l. [Organization Type] Corporation
m. [登録担当者] YH1034JP
n. [技術連絡担当者] KN1407JP
p. [ネームサーバ] ns02.sei.co.jp
p. [ネームサーバ] seigate-y.sei.co.jp
s. [署名鍵]
[状態] Connected (2023/01/31)
[登録年月日] 1999/01/27
[接続年月日] 1999/03/29
[最終更新] 2022/02/01 01:05:44 (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] SEI-INFO.CO.JP
e. [そしきめい] すみともでんこうじょうほうしすてむかぶしき
かいしゃ
f. [組織名] 住友電工情報システム株式会社
g. [Organization] Sumitomo Electric Information Systems Co.,Ltd.
k. [組織種別] 株式会社
l. [Organization Type] Corporation
m. [登録担当者] YH1034JP
n. [技術連絡担当者] KN1407JP
p. [ネームサーバ] ns02.sei.co.jp
p. [ネームサーバ] seigate-y.sei.co.jp
s. [署名鍵]
[状態] Connected (2023/01/31)
[登録年月日] 1999/01/27
[接続年月日] 1999/03/29
[最終更新] 2022/02/01 01:05:44 (JST)
sei-info.co.jp server information
Servers Location
sei-info.co.jp desktop page speed rank
Last tested: 2016-01-30
Desktop Speed
Bad
46/100
sei-info.co.jp Desktop Speed Test Quick Summary
priority - 48Leverage 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://www.google-analytics.com/analytics.js (2 hours)
priority - 33Optimize images
Properly formatting and compressing images can save many bytes of data.
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Losslessly compressing http://www.sei-info.co.jp/common5/img/group-name.png could save 2.4KiB (55% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/dounyuu/qs.png could save 2.4KiB (25% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/sp/group-logo.png could save 2KiB (20% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/sp/group-name.png could save 1.9KiB (28% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/dounyuu/docp.png could save 1.6KiB (15% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/group-logo.png could save 1.3KiB (25% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/dounyuu/pro.png could save 1.1KiB (13% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/btn_contact.png could save 1KiB (49% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/fw3.jpg could save 960B (9% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/qs.jpg could save 930B (9% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/icon/wf.jpg could save 928B (51% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/qsl.jpg could save 927B (9% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/docp.jpg could save 926B (10% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/pro.jpg could save 922B (10% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/ss.jpg could save 921B (9% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/wf-cloud.jpg could save 920B (8% reduction).
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Losslessly compressing http://www.sei-info.co.jp/common5/img/bg_footer_01.gif could save 871B (21% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/sp/h_menu.jpg could save 843B (15% reduction).
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Losslessly compressing http://www.sei-info.co.jp/images5/slide/02_left.png could save 779B (24% reduction).
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Losslessly compressing http://www.sei-info.co.jp/images5/slide/03_left.png could save 558B (17% reduction).
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Losslessly compressing http://www.sei-info.co.jp/images5/slide/01.png could save 54.7KiB (18% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/slide/02_bg.jpg could save 54.4KiB (11% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/dounyuu/bg.jpg could save 7KiB (20% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/dounyuu/fw3.png could save 4.3KiB (46% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/dounyuu/wf.png could save 3.9KiB (31% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/toppage/btn_next.png could save 2.7KiB (73% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/toppage/btn_prev.png could save 2.7KiB (73% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/gnav-bg.png could save 2.7KiB (94% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/toppage/btn_dots.png could save 2.6KiB (86% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/slide/dammy.png could save 2.5KiB (94% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/group-name.png could save 2.4KiB (55% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/dounyuu/qs.png could save 2.4KiB (25% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/sp/group-logo.png could save 2KiB (20% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/sp/group-name.png could save 1.9KiB (28% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/dounyuu/docp.png could save 1.6KiB (15% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/group-logo.png could save 1.3KiB (25% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/dounyuu/pro.png could save 1.1KiB (13% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/btn_contact.png could save 1KiB (49% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/fw3.jpg could save 960B (9% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/qs.jpg could save 930B (9% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/icon/wf.jpg could save 928B (51% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/qsl.jpg could save 927B (9% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/docp.jpg could save 926B (10% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/pro.jpg could save 922B (10% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/ss.jpg could save 921B (9% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/wf-cloud.jpg could save 920B (8% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/seihin/wf.jpg could save 909B (9% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/bg_footer_01.gif could save 871B (21% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/sp/h_menu.jpg could save 843B (15% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/sp/h_bg.jpg could save 842B (11% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/slide/02_left.png could save 779B (24% reduction).
Losslessly compressing http://www.sei-info.co.jp/common5/img/bg_header_01.gif could save 768B (16% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/slide/03_right.png could save 728B (24% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/slide/01_right.png could save 695B (23% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/slide/02_right.png could save 639B (21% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/slide/01_left.png could save 628B (20% reduction).
Losslessly compressing http://www.sei-info.co.jp/images5/slide/03_left.png could save 558B (17% reduction).
priority - 29Enable 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 281.9KiB (75% reduction).
Compressing http://www.sei-info.co.jp/common5/js/slick.min.js/ could save 66.8KiB (83% reduction).
Compressing http://www.sei-info.co.jp/common5/js/jquery-1.7.2.min.js/ could save 59.7KiB (64% reduction).
Compressing http://www.sei-info.co.jp/common5/css/layouts.css/ could save 49.8KiB (81% reduction).
Compressing http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.js/ could save 21.4KiB (74% reduction).
Compressing http://www.sei-info.co.jp/ could save 18.9KiB (76% reduction).
Compressing http://www.sei-info.co.jp/css5/toppage.css/ could save 13.9KiB (80% reduction).
Compressing http://www.sei-info.co.jp/common5/js/jquery.bxslider.min.js/ could save 13.9KiB (73% reduction).
Compressing http://www.sei-info.co.jp/common5/js/lightbox.js/ could save 8.8KiB (76% reduction).
Compressing http://www.sei-info.co.jp/common5/js/commons.js/ could save 7.4KiB (72% reduction).
Compressing http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.css/ could save 7.4KiB (79% reduction).
Compressing http://www.sei-info.co.jp/common5/js/window.js/ could save 3.4KiB (86% reduction).
Compressing http://www.sei-info.co.jp/common5/js/jquery.cookie.js/ could save 2.8KiB (65% reduction).
Compressing http://www.sei-info.co.jp/common5/css/slick.css/ could save 2.1KiB (69% reduction).
Compressing http://www.sei-info.co.jp/common5/js/jquery.popupwindow.js/ could save 2KiB (61% reduction).
Compressing http://www.sei-info.co.jp/common5/css/base.css/ could save 1.4KiB (69% reduction).
Compressing http://www.sei-info.co.jp/js5/toppage.js/ could save 975B (69% reduction).
Compressing http://www.sei-info.co.jp/common5/css/elements.css/ could save 875B (59% reduction).
Compressing http://www.sei-info.co.jp/common5/js/fancybox/jque…sewheel-3.0.4.pack.js/ could save 605B (47% reduction).
Compressing http://www.sei-info.co.jp/common5/js/jquery-1.7.2.min.js/ could save 59.7KiB (64% reduction).
Compressing http://www.sei-info.co.jp/common5/css/layouts.css/ could save 49.8KiB (81% reduction).
Compressing http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.js/ could save 21.4KiB (74% reduction).
Compressing http://www.sei-info.co.jp/ could save 18.9KiB (76% reduction).
Compressing http://www.sei-info.co.jp/css5/toppage.css/ could save 13.9KiB (80% reduction).
Compressing http://www.sei-info.co.jp/common5/js/jquery.bxslider.min.js/ could save 13.9KiB (73% reduction).
Compressing http://www.sei-info.co.jp/common5/js/lightbox.js/ could save 8.8KiB (76% reduction).
Compressing http://www.sei-info.co.jp/common5/js/commons.js/ could save 7.4KiB (72% reduction).
Compressing http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.css/ could save 7.4KiB (79% reduction).
Compressing http://www.sei-info.co.jp/common5/js/window.js/ could save 3.4KiB (86% reduction).
Compressing http://www.sei-info.co.jp/common5/js/jquery.cookie.js/ could save 2.8KiB (65% reduction).
Compressing http://www.sei-info.co.jp/common5/css/slick.css/ could save 2.1KiB (69% reduction).
Compressing http://www.sei-info.co.jp/common5/js/jquery.popupwindow.js/ could save 2KiB (61% reduction).
Compressing http://www.sei-info.co.jp/common5/css/base.css/ could save 1.4KiB (69% reduction).
Compressing http://www.sei-info.co.jp/js5/toppage.js/ could save 975B (69% reduction).
Compressing http://www.sei-info.co.jp/common5/css/elements.css/ could save 875B (59% reduction).
Compressing http://www.sei-info.co.jp/common5/js/fancybox/jque…sewheel-3.0.4.pack.js/ could save 605B (47% reduction).
priority - 14Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 15 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://www.sei-info.co.jp/common5/js/import.js
http://www.sei-info.co.jp/common5/js/jquery-1.7.2.min.js
http://code.jquery.com/jquery-1.7.2.min.js
http://www.sei-info.co.jp/common5/js/jquery.cookie.js
http://www.sei-info.co.jp/common5/js/lightbox.js
http://www.sei-info.co.jp/common5/js/jquery.bxslider.min.js
http://www.sei-info.co.jp/common5/js/fancybox/jque…usewheel-3.0.4.pack.js
http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.js
http://www.sei-info.co.jp/common5/js/jquery.popupwindow.js
http://www.sei-info.co.jp/common5/js/window.js
http://www.sei-info.co.jp/common5/js/commons.js
http://www.sei-info.co.jp/common5/js/slick.min.js
http://www.sei-info.co.jp/js5/toppage.js
http://www.sei-info.co.jp/common5/js/analytics.js
http://www.sei-info.co.jp/common5/js/ga_cc.js
http://www.sei-info.co.jp/common5/js/jquery-1.7.2.min.js
http://code.jquery.com/jquery-1.7.2.min.js
http://www.sei-info.co.jp/common5/js/jquery.cookie.js
http://www.sei-info.co.jp/common5/js/lightbox.js
http://www.sei-info.co.jp/common5/js/jquery.bxslider.min.js
http://www.sei-info.co.jp/common5/js/fancybox/jque…usewheel-3.0.4.pack.js
http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.js
http://www.sei-info.co.jp/common5/js/jquery.popupwindow.js
http://www.sei-info.co.jp/common5/js/window.js
http://www.sei-info.co.jp/common5/js/commons.js
http://www.sei-info.co.jp/common5/js/slick.min.js
http://www.sei-info.co.jp/js5/toppage.js
http://www.sei-info.co.jp/common5/js/analytics.js
http://www.sei-info.co.jp/common5/js/ga_cc.js
Optimize CSS Delivery of the following:
http://www.sei-info.co.jp/common5/css/elements.css
http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.css
http://www.sei-info.co.jp/common5/css/layouts.css
http://www.sei-info.co.jp/common5/css/base.css
http://www.sei-info.co.jp/common5/css/slick.css
http://www.sei-info.co.jp/css5/toppage.css
http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.css
http://www.sei-info.co.jp/common5/css/layouts.css
http://www.sei-info.co.jp/common5/css/base.css
http://www.sei-info.co.jp/common5/css/slick.css
http://www.sei-info.co.jp/css5/toppage.css
priority - 6Minify 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 53.1KiB (38% reduction).
Minifying http://www.sei-info.co.jp/common5/js/slick.min.js/ could save 32.6KiB (41% reduction).
Minifying http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.js/ could save 7.9KiB (28% reduction).
Minifying http://www.sei-info.co.jp/common5/js/lightbox.js/ could save 3.6KiB (32% reduction).
Minifying http://www.sei-info.co.jp/common5/js/jquery.cookie.js/ could save 3.3KiB (77% reduction).
Minifying http://www.sei-info.co.jp/common5/js/commons.js/ could save 2.4KiB (24% reduction).
Minifying http://www.sei-info.co.jp/common5/js/jquery.popupwindow.js/ could save 1.8KiB (55% reduction).
Minifying http://www.sei-info.co.jp/common5/js/window.js/ could save 1.4KiB (36% reduction).
Minifying http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.js/ could save 7.9KiB (28% reduction).
Minifying http://www.sei-info.co.jp/common5/js/lightbox.js/ could save 3.6KiB (32% reduction).
Minifying http://www.sei-info.co.jp/common5/js/jquery.cookie.js/ could save 3.3KiB (77% reduction).
Minifying http://www.sei-info.co.jp/common5/js/commons.js/ could save 2.4KiB (24% reduction).
Minifying http://www.sei-info.co.jp/common5/js/jquery.popupwindow.js/ could save 1.8KiB (55% reduction).
Minifying http://www.sei-info.co.jp/common5/js/window.js/ could save 1.4KiB (36% reduction).
priority - 2Minify 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 16.6KiB (19% reduction).
Minifying http://www.sei-info.co.jp/common5/css/layouts.css/ could save 11.1KiB (19% reduction).
Minifying http://www.sei-info.co.jp/css5/toppage.css/ could save 3.2KiB (19% reduction).
Minifying http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.css/ could save 1.7KiB (19% reduction).
Minifying http://www.sei-info.co.jp/common5/css/elements.css/ could save 546B (38% reduction).
Minifying http://www.sei-info.co.jp/css5/toppage.css/ could save 3.2KiB (19% reduction).
Minifying http://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.css/ could save 1.7KiB (19% reduction).
Minifying http://www.sei-info.co.jp/common5/css/elements.css/ could save 546B (38% 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 4KiB (17% reduction).
Minifying http://www.sei-info.co.jp/ could save 4KiB (17% reduction).
sei-info.co.jp Desktop Resource Breakdown
| Total Resources | 124 |
| Number of Hosts | 5 |
| Static Resources | 97 |
| JavaScript Resources | 16 |
| CSS Resources | 6 |
sei-info.co.jp mobile page speed rank
Last tested: 2019-11-11
Mobile Speed
Bad
58/100
sei-info.co.jp Mobile Speed Test Quick Summary
priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 6 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
https://www.sei-info.co.jp/common5/css/elements.css/
https://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.css
https://www.sei-info.co.jp/common5/css/layouts.css/
https://www.sei-info.co.jp/common5/css/base.css/
https://www.sei-info.co.jp/common5/css/slick.css/
https://www.sei-info.co.jp/css5/toppage.css/
https://www.sei-info.co.jp/common5/js/fancybox/jquery.fancybox-1.3.4.css
https://www.sei-info.co.jp/common5/css/layouts.css/
https://www.sei-info.co.jp/common5/css/base.css/
https://www.sei-info.co.jp/common5/css/slick.css/
https://www.sei-info.co.jp/css5/toppage.css/
priority - 26Avoid 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://sei-info.co.jp/
http://www.sei-info.co.jp/
https://www.sei-info.co.jp/
http://www.sei-info.co.jp/
https://www.sei-info.co.jp/
priority - 8Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 30% of the final above-the-fold content could be rendered with the full HTML response.
Click to see the screenshot with only the HTML response:
priority - 5Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 53KiB (36% reduction).
Compressing https://www.sei-info.co.jp/images5/bnr/bnr_cs-sp.jpg could save 15KiB (51% reduction).
Compressing https://www.sei-info.co.jp/images5/bnr/mail-sp.jpg could save 11.1KiB (58% reduction).
Compressing https://www.sei-info.co.jp/images5/bnr/application-sp.jpg could save 3.7KiB (28% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/wdb-sp.png could save 2.5KiB (37% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/dp-sp.png could save 2.4KiB (27% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/fw3-sp.png could save 2.4KiB (26% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/qs-sp.png could save 2.2KiB (45% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/proc-sp.png could save 2.1KiB (26% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/wf-sp.png could save 2KiB (24% reduction).
Compressing https://www.sei-info.co.jp/images5/bnr/bnr_fb-sis-sp.jpg could save 1.6KiB (16% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/mcore-sp.png could save 1.4KiB (29% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/arrow2.png could save 1.3KiB (92% reduction).
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Compressing https://www.sei-info.co.jp/common5/img/sp/h_menu_close.jpg could save 1.1KiB (33% reduction).
Compressing https://www.sei-info.co.jp/common5/img/sp/h_menu.jpg could save 1KiB (35% reduction).
Compressing https://www.sei-info.co.jp/common5/img/sp/h_bg.jpg could save 884B (26% reduction).
Compressing https://www.sei-info.co.jp/images5/bnr/bnr_cs.jpg could save 637B (12% reduction).
Compressing https://www.sei-info.co.jp/common5/img/gnav-solution.gif could save 567B (30% reduction).
Compressing https://www.sei-info.co.jp/images5/bnr/mail-sp.jpg could save 11.1KiB (58% reduction).
Compressing https://www.sei-info.co.jp/images5/bnr/application-sp.jpg could save 3.7KiB (28% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/wdb-sp.png could save 2.5KiB (37% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/dp-sp.png could save 2.4KiB (27% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/fw3-sp.png could save 2.4KiB (26% reduction).
Compressing https://www.sei-info.co.jp/images5/seihin2/qs-sp.png could save 2.2KiB (45% reduction).
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priority - 4Leverage 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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priority - 2Enable compression
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sei-info.co.jp Mobile Resource Breakdown
| Total Resources | 125 |
| Number of Hosts | 13 |
| Static Resources | 6 |
| JavaScript Resources | 27 |
| CSS Resources | 6 |
sei-info.co.jp mobile page usability
Last tested: 2019-11-11
Mobile Usability
Good
96/100
sei-info.co.jp Mobile Usability Test Quick Summary
priority - 3Size 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="https://sei.co.jp/"></a> is close to 1 other tap targets.The tap target
<li id="slick-slide00" class="slick-active">1</li> is close to 3 other tap targets.The tap target
<li id="slick-slide00" class="slick-active">1</li> and 7 others are close to other tap targets.The tap target
<li id="slick-slide01">2</li> and 2 others are close to other tap targets.The tap target
<button type="button" class="slick-prev slick-arrow">Previous</button> is close to 3 other tap targets.The tap target
<a href="/document-plus…omers/his.html"></a> is close to 1 other tap targets.The tap target
<button type="button" class="slick-next slick-arrow">Next</button> is close to 2 other tap targets.The tap target
<a href="#top"></a> is close to 1 other tap targets.sei-info.co.jp HTML validation
Warnings
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
Line: 66 Column: 1 - 23
"...anchor--> <a name="top" id="top"></a> <..."
"...anchor--> <a name="top" id="top"></a> <..."
The “type” attribute is unnecessary for JavaScript resources.
Line: 531 Column: 1 - 31
"...start --> <script type="text/javascript"> (..." Line: 543 Column: 1 - 31
"...r 3-1 --> <script type="text/javascript"> <!-- ..."
"...start --> <script type="text/javascript"> (..." Line: 543 Column: 1 - 31
"...r 3-1 --> <script type="text/javascript"> <!-- ..."
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sei-info.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.
sei-info.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.