Tools & Wizards About Us
webshop.kenkyusha.co.jp screenshot

Report Summary

  • 88

    Performance

    Renders faster than
    90% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

webshop.kenkyusha.co.jp

研究社 - 書籍検索

Page Load Speed

2.3 sec in total

First Response

553 ms

Resources Loaded

1.7 sec

Page Rendered

97 ms

webshop.kenkyusha.co.jp screenshot

About Website

Visit webshop.kenkyusha.co.jp now to see the best up-to-date Webshop Kenkyusha content for Japan and also check out these interesting facts you probably never knew about webshop.kenkyusha.co.jp

Visit webshop.kenkyusha.co.jp

Key Findings

We analyzed Webshop.kenkyusha.co.jp page load time and found that the first response time was 553 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

webshop.kenkyusha.co.jp performance score

88

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

67/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

84/100

25%

SI (Speed Index)

Value5.4 s

56/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.008

100/100

15%

TTI (Time to Interactive)

Value2.5 s

98/100

10%

Network Requests Diagram

webshop.kenkyusha.co.jp

553 ms

k_style.css

322 ms

head_title.jpg

347 ms

menu01.jpg

347 ms

menu02.jpg

346 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that all of those requests were addressed to Webshop.kenkyusha.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Webshop.kenkyusha.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 15.6 kB (37%)

Content Size

42.7 kB

After Optimization

27.1 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Webshop.kenkyusha.co.jp main page is 42.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 5% of websites need less resources to load. Images take 23.8 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 13.6 kB

  • Original 16.4 kB
  • After minification 12.3 kB
  • After compression 2.8 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. This page needs HTML code to be minified as it can gain 4.1 kB, which is 25% 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 13.6 kB or 83% of the original size.

Image Optimization

-1%

Potential reduce by 168 B

  • Original 23.8 kB
  • After minification 23.6 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. Webshop Kenkyusha images are well optimized though.

CSS Optimization

-73%

Potential reduce by 1.8 kB

  • Original 2.4 kB
  • After minification 1.8 kB
  • After compression 649 B

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. Webshop.kenkyusha.co.jp needs all CSS files to be minified and compressed as it can save up to 1.8 kB or 73% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (35%)

Requests Now

20

After Optimization

13

  • Images
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Webshop Kenkyusha. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

webshop.kenkyusha.co.jp

webshop.kenkyusha.co.jp

553 ms

k_style.css

k_style.css

322 ms

head_title.jpg

head_title.jpg

347 ms

menu01.jpg

menu01.jpg

347 ms

menu02.jpg

menu02.jpg

346 ms

menu03.jpg

menu03.jpg

348 ms

menu04.jpg

menu04.jpg

480 ms

menu05.jpg

menu05.jpg

632 ms

menu07.jpg

menu07.jpg

672 ms

menu08.jpg

menu08.jpg

648 ms

kensaku_btn.gif

kensaku_btn.gif

677 ms

shousai_kensaku_btn.gif

shousai_kensaku_btn.gif

669 ms

line01.gif

line01.gif

787 ms

tab02.gif

tab02.gif

958 ms

spacer.gif

spacer.gif

975 ms

sub_title_left.gif

sub_title_left.gif

978 ms

sub_title_right.gif

sub_title_right.gif

998 ms

mark01.gif

mark01.gif

1005 ms

copyright.gif

copyright.gif

935 ms

mainbg.gif

mainbg.gif

947 ms

head_back.jpg

head_back.jpg

964 ms

Accessibility Review

webshop.kenkyusha.co.jp accessibility score

54

Accessibility Issues

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 [lang] attribute

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

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

Best Practices

webshop.kenkyusha.co.jp 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

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

webshop.kenkyusha.co.jp SEO score

58

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Webshop.kenkyusha.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 Webshop.kenkyusha.co.jp main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

webshop.kenkyusha.co.jp

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