4.9 sec in total
907 ms
3.8 sec
151 ms
Click here to check amazing Nikkeibook content for Japan. Otherwise, check out these important facts you probably never knew about nikkeibook.com
「日経の本 日本経済新聞出版」では、本・書籍の新刊やおすすめ、企業様に好評な研修用DVDの紹介・販売(法人様)をしております。また、著者インタビューや本・書籍・研修用DVDに関する、他では見ることのできない情報も配信しております。
Visit nikkeibook.comWe analyzed Nikkeibook.com page load time and found that the first response time was 907 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
nikkeibook.com performance score
name
value
score
weighting
Value9.7 s
0/100
10%
Value18.5 s
0/100
25%
Value17.3 s
0/100
10%
Value10,040 ms
0/100
30%
Value0
100/100
15%
Value27.2 s
0/100
10%
907 ms
342 ms
340 ms
558 ms
172 ms
Our browser made a total of 99 requests to load all elements on the main page. We found that 98% of them (97 requests) were addressed to the original Nikkeibook.com, 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Nikkeibook.com.
Page size can be reduced by 150.5 kB (44%)
343.4 kB
192.9 kB
In fact, the total size of Nikkeibook.com main page is 343.4 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. Images take 163.6 kB which makes up the majority of the site volume.
Potential reduce by 15.7 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 15.7 kB or 75% of the original size.
Potential reduce by 18.2 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Nikkeibook needs image optimization as it can save up to 18.2 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 37.3 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 37.3 kB or 61% of the original size.
Potential reduce by 79.2 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Nikkeibook.com needs all CSS files to be minified and compressed as it can save up to 79.2 kB or 81% of the original size.
Number of requests can be reduced by 44 (45%)
98
54
The browser has sent 98 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nikkeibook. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for CSS and as a result speed up the page load time.
nikkeibook.com
907 ms
import.css
342 ms
common.js
340 ms
swfobject.js
558 ms
default.css
172 ms
common.css
548 ms
main.css
679 ms
index.css
343 ms
shoseki.css
345 ms
bunko.css
510 ms
business.css
403 ms
detail.css
512 ms
license.css
680 ms
video.css
590 ms
detail_search.css
679 ms
booklist.css
679 ms
errata.css
714 ms
qa.css
776 ms
inquiry.css
845 ms
newspaper.css
847 ms
ranking.css
848 ms
shotenlist.css
848 ms
genrelist.css
882 ms
authorlist.css
959 ms
map.css
1013 ms
dict.css
1184 ms
column1.css
1015 ms
links.css
1016 ms
cart.css
1050 ms
prize-winner.css
1146 ms
premiere.css
1181 ms
search_btn1.gif
550 ms
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top_shoseki_ttl.gif
543 ms
top_shoseki_img.jpg
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top_bunko_ttl.gif
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top_business_ttl.gif
608 ms
top_business_img.jpg
878 ms
top_premiere_ttl.gif
713 ms
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top_shikaku_ttl.gif
794 ms
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top_magazine_ttl.gif
883 ms
top_magazine_img.jpg
1127 ms
top_kaisha_ttl.gif
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top_video_ttl.gif
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top_banner_video.jpg
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top_topics_ttl.gif
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top_topics_rss.gif
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top_topics_list.gif
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top_banner_mailmag.gif
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top_banner_shinbun.gif
1394 ms
top_banner_prize.gif
1416 ms
top_banner_catalogue2015.jpg
1600 ms
bnr_kijidb.jpg
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top_banner_nikkeidenshiban.gif
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top_banner_science.gif
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n-store.gif
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bizaca.gif
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manabi.gif
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ntest.gif
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double_line.gif
667 ms
head_logo.gif
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head_houjin.gif
727 ms
head_guide.gif
832 ms
head_shop.gif
833 ms
search_detail1.gif
825 ms
search_genre.gif
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search_author.gif
826 ms
search_recent.gif
903 ms
search_coming.gif
993 ms
topics_genre_event.gif
970 ms
topics_genre_shohyo.gif
971 ms
gototop.gif
972 ms
foot_logo.gif
974 ms
analytics.js
22 ms
collect
12 ms
nikkeibook.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Image elements do not have [alt] attributes
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
nikkeibook.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
nikkeibook.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
JA
JA
EUC-JP
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nikkeibook.com can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that Nikkeibook.com main page’s claimed encoding is euc-jp. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
nikkeibook.com
Open Graph data is detected on the main page of Nikkeibook. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: