13.3 sec in total
2.6 sec
10.3 sec
377 ms
Visit englishbooks.jp now to see the best up-to-date Englishbooks content for Japan and also check out these interesting facts you probably never knew about englishbooks.jp
最大20%割引で、英語学習に最適なケンブリッジ大学出版や オックスフォード大学出版などのテキスト購入できます。
Visit englishbooks.jpWe analyzed Englishbooks.jp page load time and found that the first response time was 2.6 sec and then it took 10.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
englishbooks.jp performance score
name
value
score
weighting
Value11.6 s
0/100
10%
Value13.1 s
0/100
25%
Value19.1 s
0/100
10%
Value630 ms
48/100
30%
Value0.169
71/100
15%
Value16.0 s
6/100
10%
2632 ms
1694 ms
1872 ms
1897 ms
1527 ms
Our browser made a total of 126 requests to load all elements on the main page. We found that 91% of them (115 requests) were addressed to the original Englishbooks.jp, 3% (4 requests) were made to Maxcdn.bootstrapcdn.com and 2% (3 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (3.2 sec) belongs to the original domain Englishbooks.jp.
Page size can be reduced by 1.6 MB (12%)
12.9 MB
11.4 MB
In fact, the total size of Englishbooks.jp main page is 12.9 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. 50% of websites need less resources to load. Images take 11.6 MB which makes up the majority of the site volume.
Potential reduce by 242.7 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 242.7 kB or 87% of the original size.
Potential reduce by 470.5 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. Englishbooks images are well optimized though.
Potential reduce by 534.5 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 534.5 kB or 75% of the original size.
Potential reduce by 325.1 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. Englishbooks.jp needs all CSS files to be minified and compressed as it can save up to 325.1 kB or 84% of the original size.
Number of requests can be reduced by 46 (38%)
120
74
The browser has sent 120 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Englishbooks. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.
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englishbooks.jp accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
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 valid value for its [lang] attribute.
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
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
englishbooks.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
englishbooks.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
Image elements do not have [alt] attributes
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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Englishbooks.jp can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Englishbooks.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.
{{og_description}}
englishbooks.jp
Open Graph description is not detected on the main page of Englishbooks. 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: