12.5 sec in total
681 ms
11 sec
767 ms
Click here to check amazing U Can content for Japan. Otherwise, check out these important facts you probably never knew about u-can.jp
生涯学習のユーキャンは、「学ぶよろこびをあなたに」をモットーに、役立つ資格から、趣味、実用講座などさまざまな通信教育をご紹介しています。
Visit u-can.jpWe analyzed U-can.jp page load time and found that the first response time was 681 ms and then it took 11.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
u-can.jp performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value10.9 s
0/100
25%
Value13.3 s
2/100
10%
Value7,760 ms
0/100
30%
Value0.09
92/100
15%
Value33.5 s
0/100
10%
681 ms
708 ms
318 ms
628 ms
631 ms
Our browser made a total of 244 requests to load all elements on the main page. We found that 0% of them (1 request) were addressed to the original U-can.jp, 59% (144 requests) were made to U-can.co.jp and 6% (14 requests) were made to Static.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (2.2 sec) relates to the external source U-can.co.jp.
Page size can be reduced by 632.2 kB (23%)
2.7 MB
2.1 MB
In fact, the total size of U-can.jp main page is 2.7 MB. 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. Images take 2.1 MB which makes up the majority of the site volume.
Potential reduce by 91.3 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. This page needs HTML code to be minified as it can gain 17.6 kB, which is 15% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 91.3 kB or 78% of the original size.
Potential reduce by 213.1 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. U Can images are well optimized though.
Potential reduce by 295.1 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 295.1 kB or 65% of the original size.
Potential reduce by 32.8 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. U-can.jp needs all CSS files to be minified and compressed as it can save up to 32.8 kB or 82% of the original size.
Number of requests can be reduced by 104 (45%)
233
129
The browser has sent 233 CSS, Javascripts, AJAX and image requests in order to completely render the main page of U Can. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 57 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
u-can.jp
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u-can.jp accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-hidden="true"] elements contain focusable descendents
ARIA input fields do not have accessible names
ARIA toggle fields do not have accessible names
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
u-can.jp best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
u-can.jp SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
Tap targets are not sized appropriately
JA
JA
SHIFT_JIS
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise U-can.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 U-can.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.
u-can.jp
Open Graph description is not detected on the main page of U Can. 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: