Tools & Wizards About Us
englishbooks.jp screenshot

Report Summary

  • 35

    Performance

    Renders faster than
    55% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

englishbooks.jp

englishbooks.jp - 英会話学習におすすめのテキストのご購入はこちら - ELTテキスト

Page Load Speed

10.7 sec in total

First Response

182 ms

Resources Loaded

10.1 sec

Page Rendered

461 ms

englishbooks.jp screenshot

About Website

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.jp

Key Findings

We analyzed Englishbooks.jp page load time and found that the first response time was 182 ms and then it took 10.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

englishbooks.jp performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value12.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value40.3 s

0/100

25%

SI (Speed Index)

Value21.1 s

0/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.183

66/100

15%

TTI (Time to Interactive)

Value19.8 s

2/100

10%

Network Requests Diagram

index.php

182 ms

index.php

797 ms

2528 ms

jquery-ui-1.8.23.css

364 ms

stylesheet.css

542 ms

Our browser made a total of 164 requests to load all elements on the main page. We found that 90% of them (148 requests) were addressed to the original Englishbooks.jp, 2% (4 requests) were made to Maxcdn.bootstrapcdn.com and 1% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Englishbooks.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 657.7 kB (10%)

Content Size

6.8 MB

After Optimization

6.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Englishbooks.jp main page is 6.8 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. 60% of websites need less resources to load. Images take 6.2 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 260.1 kB

  • Original 299.9 kB
  • After minification 288.4 kB
  • After compression 39.8 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 260.1 kB or 87% of the original size.

Image Optimization

-5%

Potential reduce by 313.2 kB

  • Original 6.2 MB
  • After minification 5.9 MB

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.

JavaScript Optimization

-25%

Potential reduce by 70.8 kB

  • Original 288.1 kB
  • After minification 285.6 kB
  • After compression 217.3 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 70.8 kB or 25% of the original size.

CSS Optimization

-21%

Potential reduce by 13.6 kB

  • Original 65.2 kB
  • After minification 65.2 kB
  • After compression 51.7 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. Englishbooks.jp needs all CSS files to be minified and compressed as it can save up to 13.6 kB or 21% of the original size.

Requests Breakdown

Number of requests can be reduced by 55 (35%)

Requests Now

157

After Optimization

102

  • Images
  • JavaScript
  • CSS

The browser has sent 157 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 29 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

index.php

index.php

182 ms

index.php

index.php

797 ms

2528 ms

jquery-ui-1.8.23.css

jquery-ui-1.8.23.css

364 ms

stylesheet.css

stylesheet.css

542 ms

style.css

style.css

547 ms

superfish.css

superfish.css

558 ms

magnific-popup.css

magnific-popup.css

562 ms

camera.css

camera.css

622 ms

sprinkle.css

sprinkle.css

648 ms

font-awesome.min.css

font-awesome.min.css

38 ms

jquery.fancybox-1.3.4.css

jquery.fancybox-1.3.4.css

722 ms

hummingbird-treeview.css

hummingbird-treeview.css

727 ms

bootstrap.css

bootstrap.css

744 ms

bootstrap-responsive.css

bootstrap-responsive.css

752 ms

media.css

media.css

808 ms

font-awesome.min.css

font-awesome.min.css

49 ms

jquery-1.8.3.min.js

jquery-1.8.3.min.js

1038 ms

jquery-ui-1.8.23.min.js

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1092 ms

jquery.bxGallery.1.1.min.js

jquery.bxGallery.1.1.min.js

908 ms

jquery.fancybox-1.3.4.pack.js

jquery.fancybox-1.3.4.pack.js

930 ms

xeasyTooltipIMG.js

xeasyTooltipIMG.js

934 ms

hoverIntent.js

hoverIntent.js

993 ms

superfish.js

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1088 ms

jquery.mobile.customized.min.js

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1115 ms

jquery.easing.1.3.js

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1127 ms

jquery.camera.js

jquery.camera.js

1181 ms

jquery.cookie.js

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1229 ms

jquery.stringball.js

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1269 ms

jquery.mousewheel.min.js

jquery.mousewheel.min.js

1270 ms

jquery.carouFredSel-6.2.0-packed.js

jquery.carouFredSel-6.2.0-packed.js

1497 ms

bootstrap.js

bootstrap.js

1368 ms

jquery.touchSwipe.min.js

jquery.touchSwipe.min.js

1420 ms

hummingbird-treeview.js

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1452 ms

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1450 ms

HoldOn.css

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1485 ms

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1554 ms

css

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46 ms

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65 ms

owl.carousel.min.new.css

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1612 ms

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1631 ms

js

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69 ms

select2.min.css

select2.min.css

1460 ms

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1310 ms

owl.theme.css

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1144 ms

HoldOn.js

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1198 ms

select2.min.js

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1259 ms

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1318 ms

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112 ms

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124 ms

body_bg.png

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201 ms

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233 ms

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200 ms

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232 ms

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232 ms

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232 ms

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443 ms

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444 ms

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583 ms

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738 ms

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557 ms

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581 ms

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581 ms

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925 ms

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1316 ms

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951 ms

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974 ms

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1101 ms

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1142 ms

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1290 ms

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1325 ms

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1360 ms

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1288 ms

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1516 ms

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1469 ms

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1473 ms

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1511 ms

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1713 ms

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1745 ms

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1655 ms

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1616 ms

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three-letter-words-3rd-edition-no-cd-9784905299639.jpg

1780 ms

conversion_async.js

conversion_async.js

159 ms

font

font

109 ms

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2087 ms

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1618 ms

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1619 ms

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1861 ms

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1902 ms

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1813 ms

fontawesome-webfont.woff

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89 ms

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90 ms

106 ms

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1773 ms

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1636 ms

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1801 ms

94 ms

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1798 ms

ga.js

ga.js

69 ms

4573205120041.MAIN.jpg

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1735 ms

__utm.gif

__utm.gif

12 ms

match-madness-8717344311199.jpg

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1748 ms

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1819 ms

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1847 ms

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1882 ms

collect

collect

11 ms

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1925 ms

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1719 ms

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1785 ms

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1635 ms

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1636 ms

think-big-for-business-student-book-1-9784905426752.jpg

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1559 ms

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1537 ms

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1487 ms

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1504 ms

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1539 ms

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1721 ms

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1624 ms

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1466 ms

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1528 ms

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1407 ms

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1488 ms

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1449 ms

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1491 ms

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1579 ms

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1408 ms

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1594 ms

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1294 ms

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1266 ms

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1336 ms

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1315 ms

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1538 ms

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1326 ms

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1332 ms

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1337 ms

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1347 ms

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1304 ms

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1288 ms

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1319 ms

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1307 ms

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1240 ms

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1272 ms

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1216 ms

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1216 ms

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189 ms

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191 ms

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213 ms

Accessibility Review

englishbooks.jp accessibility score

75

Accessibility Issues

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

High

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

High

<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

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

englishbooks.jp best practices score

50

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

englishbooks.jp SEO score

77

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    JP

  • Encoding

    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 does not match 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.

Social Sharing Optimization

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: