7.5 sec in total
899 ms
6.4 sec
236 ms
Welcome to gakken.co.jp homepage info - get ready to check Gakken best content for Japan right away, or after learning these important things about gakken.co.jp
株式会社学研ホールディングスの公式サイト。企業概要、IR、社会・環境、採用などの企業情報のほか、学研グループの書籍、商品、サービス、教育などの各種事業のご紹介
Visit gakken.co.jpWe analyzed Gakken.co.jp page load time and found that the first response time was 899 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
gakken.co.jp performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value15.5 s
0/100
25%
Value16.8 s
0/100
10%
Value880 ms
32/100
30%
Value0.553
13/100
15%
Value14.6 s
8/100
10%
899 ms
356 ms
359 ms
360 ms
362 ms
Our browser made a total of 135 requests to load all elements on the main page. We found that 93% of them (125 requests) were addressed to the original Gakken.co.jp, 2% (3 requests) were made to Platform.twitter.com and 1% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Gakken.co.jp.
Page size can be reduced by 225.4 kB (17%)
1.3 MB
1.1 MB
In fact, the total size of Gakken.co.jp main page is 1.3 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. 40% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 42.3 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. 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 42.3 kB or 78% of the original size.
Potential reduce by 53.5 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. Gakken images are well optimized though.
Potential reduce by 81.9 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 81.9 kB or 59% of the original size.
Potential reduce by 47.7 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. Gakken.co.jp needs all CSS files to be minified and compressed as it can save up to 47.7 kB or 84% of the original size.
Number of requests can be reduced by 58 (43%)
134
76
The browser has sent 134 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Gakken. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
gakken.co.jp
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gakken.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.
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
gakken.co.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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
gakken.co.jp SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
Tap targets are not sized appropriately
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Gakken.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 Gakken.co.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.
gakken.co.jp
Open Graph data is detected on the main page of Gakken. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: