5.2 sec in total
303 ms
4.5 sec
415 ms
Visit ebook.itmedia.co.jp now to see the best up-to-date Ebook ITmedia content for Japan and also check out these interesting facts you probably never knew about ebook.itmedia.co.jp
電子書籍/電子出版の今を知る、今が分かる
Visit ebook.itmedia.co.jpWe analyzed Ebook.itmedia.co.jp page load time and found that the first response time was 303 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
ebook.itmedia.co.jp performance score
name
value
score
weighting
Value6.5 s
2/100
10%
Value10.3 s
0/100
25%
Value9.3 s
12/100
10%
Value410 ms
66/100
30%
Value0.02
100/100
15%
Value15.2 s
7/100
10%
303 ms
306 ms
149 ms
294 ms
297 ms
Our browser made a total of 149 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Ebook.itmedia.co.jp, 27% (40 requests) were made to Image.itmedia.co.jp and 16% (24 requests) were made to Itmedia.co.jp. The less responsive or slowest element that took the longest time to load (897 ms) relates to the external source Image.itmedia.co.jp.
Page size can be reduced by 474.0 kB (54%)
871.4 kB
397.4 kB
In fact, the total size of Ebook.itmedia.co.jp main page is 871.4 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. 65% of websites need less resources to load. Javascripts take 444.8 kB which makes up the majority of the site volume.
Potential reduce by 95.0 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 95.0 kB or 81% of the original size.
Potential reduce by 11.8 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. Ebook ITmedia images are well optimized though.
Potential reduce by 299.7 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 299.7 kB or 67% of the original size.
Potential reduce by 67.5 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. Ebook.itmedia.co.jp needs all CSS files to be minified and compressed as it can save up to 67.5 kB or 77% of the original size.
Number of requests can be reduced by 77 (53%)
146
69
The browser has sent 146 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ebook ITmedia. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 54 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
ebook.itmedia.co.jp
303 ms
306 ms
movePC2SP.js
149 ms
base.css
294 ms
ad.css
297 ms
subtop.css
300 ms
prettify.css
303 ms
prettify.js
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jquery.min.js
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itmedia_plusd_mobile.js
53 ms
parts_press.js
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fl090925.js
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masterBodyEnd.js
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smartPhoneHeadLink.js
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s_code.js
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base.css
450 ms
ad.css
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v1
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itmidNav_bg.gif
297 ms
top_news071.jpg
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bul.png
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log.gif
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ranking_80.jpg
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ebook.itmedia.co.jp 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
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
ebook.itmedia.co.jp best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
ebook.itmedia.co.jp SEO score
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
SHIFT_JIS
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ebook.itmedia.co.jp 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 Ebook.itmedia.co.jp main page’s claimed encoding is shift_jis. 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.
ebook.itmedia.co.jp
Open Graph description is not detected on the main page of Ebook ITmedia. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: