Tools & Wizards About Us
gakusan.com screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

gakusan.com

参考書・問題集の通販サイト - 学参ドットコム

Page Load Speed

5 sec in total

First Response

356 ms

Resources Loaded

4.1 sec

Page Rendered

585 ms

gakusan.com screenshot

About Website

Click here to check amazing Gakusan content for Japan. Otherwise, check out these important facts you probably never knew about gakusan.com

参考書・問題集に特化した通販サイトです。教科書ガイドや共通テスト・大学入試対策、小学・中学・高校の参考書や問題集、辞書・辞典・語学書など豊富な商品を取り揃えています。新刊情報毎日更新。塾・家庭教師などの方へ法人向けサービスもあります。

Visit gakusan.com

Key Findings

We analyzed Gakusan.com page load time and found that the first response time was 356 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

gakusan.com performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value4.8 s

67/100

10%

TBT (Total Blocking Time)

Value1,520 ms

13/100

30%

CLS (Cumulative Layout Shift)

Value0.106

88/100

15%

TTI (Time to Interactive)

Value10.9 s

21/100

10%

Network Requests Diagram

gakusan.com

356 ms

www.gakusan.com

762 ms

gtm.js

86 ms

js

65 ms

jquery-3.6.4.min.js

42 ms

Our browser made a total of 78 requests to load all elements on the main page. We found that 81% of them (63 requests) were addressed to the original Gakusan.com, 5% (4 requests) were made to Googletagmanager.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Gakusan.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 719.2 kB (23%)

Content Size

3.1 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Gakusan.com main page is 3.1 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 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 52.6 kB

  • Original 65.3 kB
  • After minification 59.1 kB
  • After compression 12.7 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 52.6 kB or 81% of the original size.

Image Optimization

-20%

Potential reduce by 589.0 kB

  • Original 3.0 MB
  • After minification 2.4 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. Obviously, Gakusan needs image optimization as it can save up to 589.0 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-58%

Potential reduce by 32.1 kB

  • Original 55.1 kB
  • After minification 55.1 kB
  • After compression 22.9 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 32.1 kB or 58% of the original size.

CSS Optimization

-84%

Potential reduce by 45.5 kB

  • Original 54.3 kB
  • After minification 40.8 kB
  • After compression 8.8 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. Gakusan.com needs all CSS files to be minified and compressed as it can save up to 45.5 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (22%)

Requests Now

76

After Optimization

59

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Gakusan. 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 as a result speed up the page load time.

Network Requests Diagram

gakusan.com

gakusan.com

356 ms

www.gakusan.com

www.gakusan.com

762 ms

gtm.js

gtm.js

86 ms

js

js

65 ms

jquery-3.6.4.min.js

jquery-3.6.4.min.js

42 ms

hamburgers.min.css

hamburgers.min.css

61 ms

reset.css

reset.css

203 ms

style.css

style.css

535 ms

logo.gif

logo.gif

543 ms

bnr_tosyomaturi72.png

bnr_tosyomaturi72.png

680 ms

conan_fusen.png

conan_fusen.png

1343 ms

9784095019581.jpg

9784095019581.jpg

543 ms

conan_bag.png

conan_bag.png

1344 ms

9784095017129.jpg

9784095017129.jpg

650 ms

9784095017297.jpg

9784095017297.jpg

652 ms

9784095017617.jpg

9784095017617.jpg

691 ms

9784095017785.jpg

9784095017785.jpg

819 ms

kodansha-gakusan_large.png

kodansha-gakusan_large.png

1643 ms

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1016 ms

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1030 ms

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9784065298350.jpg

989 ms

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1156 ms

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1185 ms

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1200 ms

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1324 ms

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9784581052573.jpg

1351 ms

b_cart.gif

b_cart.gif

1368 ms

4910033610649.jpg

4910033610649.jpg

1496 ms

bt_search.gif

bt_search.gif

1509 ms

9784297141523.jpg

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1513 ms

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9784634054417.jpg

1520 ms

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1538 ms

9784297141509.jpg

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1664 ms

bnr_senior_best15.png

bnr_senior_best15.png

1677 ms

bnr_junior_best15.png

bnr_junior_best15.png

1682 ms

bnr_ele_best15.png

bnr_ele_best15.png

1687 ms

bnr_sekimasao.png

bnr_sekimasao.png

1705 ms

bnr_nikkyouhan_ch.png

bnr_nikkyouhan_ch.png

1807 ms

bnr_gakusan_650_140.jpg

bnr_gakusan_650_140.jpg

2324 ms

bnr_study1.png

bnr_study1.png

1844 ms

bnr_toshocardnext.png

bnr_toshocardnext.png

1850 ms

bnr_nikkyohan70th.png

bnr_nikkyohan70th.png

1856 ms

js

js

98 ms

analytics.js

analytics.js

22 ms

destination

destination

132 ms

s_retargeting.js

s_retargeting.js

934 ms

fbevents.js

fbevents.js

131 ms

collect

collect

56 ms

bnr_fmp_150701.png

bnr_fmp_150701.png

1729 ms

collect

collect

81 ms

ga-audiences

ga-audiences

75 ms

bnr_suken_chart_jh.jpg

bnr_suken_chart_jh.jpg

1436 ms

bnr_goods_suken02.jpg

bnr_goods_suken02.jpg

1476 ms

bn_z_gakusan.gif

bn_z_gakusan.gif

1479 ms

conversion.js

conversion.js

916 ms

bn_z_goukaku.gif

bn_z_goukaku.gif

1378 ms

bnr_gakken2.jpg

bnr_gakken2.jpg

1394 ms

9784892880926.jpg

9784892880926.jpg

1470 ms

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1497 ms

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1376 ms

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1209 ms

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1199 ms

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1288 ms

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1204 ms

9784877401184.jpg

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1178 ms

9784877401283.jpg

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1169 ms

9784099416775.jpg

9784099416775.jpg

1061 ms

tc_icon.png

tc_icon.png

1150 ms

icon_cart.svg

icon_cart.svg

1150 ms

icon_history.svg

icon_history.svg

1174 ms

icon_how.svg

icon_how.svg

1163 ms

conversion_async.js

conversion_async.js

1433 ms

ytag.js

ytag.js

182 ms

icon_policy.svg

icon_policy.svg

1039 ms

global_menu_2020.png

global_menu_2020.png

1044 ms

global_menu_corporate.png

global_menu_corporate.png

1144 ms

search_icon.gif

search_icon.gif

1137 ms

bar_gra_sub.gif

bar_gra_sub.gif

1156 ms

Accessibility Review

gakusan.com accessibility score

74

Accessibility Issues

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.

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

Form elements do not have associated labels

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

gakusan.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

gakusan.com SEO score

90

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Gakusan.com 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 Gakusan.com 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

gakusan.com

Open Graph description is not detected on the main page of Gakusan. 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: