3.3 sec in total
418 ms
2.6 sec
314 ms
Click here to check amazing Ua Book content for Japan. Otherwise, check out these important facts you probably never knew about ua-book.or.jp
放送大学教育振興会では、放送大学のテキストとビデオを発行しています。テキストの購入も可能です。
Visit ua-book.or.jpWe analyzed Ua-book.or.jp page load time and found that the first response time was 418 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
ua-book.or.jp performance score
name
value
score
weighting
Value9.1 s
0/100
10%
Value9.4 s
0/100
25%
Value18.5 s
0/100
10%
Value120 ms
97/100
30%
Value0.198
62/100
15%
Value11.5 s
18/100
10%
418 ms
197 ms
528 ms
356 ms
372 ms
Our browser made a total of 48 requests to load all elements on the main page. We found that all of those requests were addressed to Ua-book.or.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Ua-book.or.jp.
Page size can be reduced by 13.5 kB (11%)
119.2 kB
105.7 kB
In fact, the total size of Ua-book.or.jp main page is 119.2 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. 25% of websites need less resources to load. Images take 101.8 kB which makes up the majority of the site volume.
Potential reduce by 9.4 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 9.4 kB or 76% of the original size.
Potential reduce by 51 B
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. Ua Book images are well optimized though.
Potential reduce by 4.1 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. Ua-book.or.jp needs all CSS files to be minified and compressed as it can save up to 4.1 kB or 79% of the original size.
We found no issues to fix!
47
47
The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ua Book. According to our analytics all requests are already optimized.
ua-book.or.jp
418 ms
basic.css
197 ms
news.html
528 ms
logo.jpg
356 ms
header_agree.gif
372 ms
header_privacy.gif
385 ms
header_sitemap.gif
418 ms
top_image4.jpg
1445 ms
navi01.gif
532 ms
navi02.gif
556 ms
navi03.gif
578 ms
navi04.gif
626 ms
navi05.gif
699 ms
navi06.gif
707 ms
top_news.gif
739 ms
side_textshop.gif
771 ms
side_bangumi.gif
835 ms
side_namesearch.gif
872 ms
side_jenre.gif
884 ms
side_Postcard.gif
922 ms
side_fax.gif
963 ms
side_email.gif
1043 ms
side_areasearch.gif
1046 ms
side_link.gif
1059 ms
pdf_banner.gif
1107 ms
kyara.gif
1156 ms
line.gif
1268 ms
bg.gif
1035 ms
news.css
892 ms
header_agree_r.gif
196 ms
header_link_r.gif
212 ms
header_sitemap_r.gif
187 ms
present_banner_r01.gif
179 ms
navi_r01.gif
177 ms
navi_r02.gif
211 ms
navi_r03.gif
352 ms
navi_r04.gif
356 ms
navi_r05.gif
370 ms
navi_r06.gif
388 ms
side_bangumi_r.gif
419 ms
side_namesearch_r.gif
418 ms
side_net_r.gif
526 ms
side_jenre_r.gif
533 ms
side_Postcard_r.gif
556 ms
side_fax_r.gif
581 ms
side_email_r.gif
626 ms
side_areasearch_r.gif
628 ms
pdf_banner_r.gif
701 ms
ua-book.or.jp accessibility score
ua-book.or.jp 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
ua-book.or.jp SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
N/A
SHIFT_JIS
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ua-book.or.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Ua-book.or.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.
ua-book.or.jp
Open Graph description is not detected on the main page of Ua Book. 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: