6.1 sec in total
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We analyzed Tokai-koka.ac.jp page load time and found that the first response time was 540 ms and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
tokai-koka.ac.jp performance score
Our browser made a total of 49 requests to load all elements on the main page. We found that 88% of them (43 requests) were addressed to the original Tokai-koka.ac.jp, 4% (2 requests) were made to Maxcdn.bootstrapcdn.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (3.8 sec) belongs to the original domain Tokai-koka.ac.jp.
Page size can be reduced by 75.2 kB (2%)
In fact, the total size of Tokai-koka.ac.jp main page is 3.7 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. 30% of websites need less resources to load. Images take 3.6 MB which makes up the majority of the site volume.
Potential reduce by 13.9 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 3.9 kB, which is 22% 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 13.9 kB or 77% of the original size.
Potential reduce by 19.9 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. Tokai Koka images are well optimized though.
Potential reduce by 10.5 kB
Potential reduce by 31.0 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. Tokai-koka.ac.jp needs all CSS files to be minified and compressed as it can save up to 31.0 kB or 76% of the original size.
Number of requests can be reduced by 23 (49%)
tokai-koka.ac.jp accessibility score
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
<html> element does not have a [lang] attribute
These items highlight common accessibility best practices.
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
tokai-koka.ac.jp best practices score
Trust and Safety
Does not use HTTPS
Ensure CSP is effective against XSS attacks
tokai-koka.ac.jp SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
robots.txt is not valid
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/).
Document uses legible font sizes
Tap targets are not sized appropriately
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tokai-koka.ac.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 Tokai-koka.ac.jp main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
Open Graph description is not detected on the main page of Tokai Koka. 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: