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kenkyusha.co.jp screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    76% of other websites

  • 55

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

kenkyusha.co.jp

研究社

Page Load Speed

8.1 sec in total

First Response

419 ms

Resources Loaded

7.3 sec

Page Rendered

295 ms

kenkyusha.co.jp screenshot

About Website

Click here to check amazing Kenkyusha content for Japan. Otherwise, check out these important facts you probably never knew about kenkyusha.co.jp

研究社 1907年創業の語学系専門出版社です。

Visit kenkyusha.co.jp

Key Findings

We analyzed Kenkyusha.co.jp page load time and found that the first response time was 419 ms and then it took 7.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

kenkyusha.co.jp performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

29/100

25%

SI (Speed Index)

Value11.2 s

5/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.064

97/100

15%

TTI (Time to Interactive)

Value4.9 s

78/100

10%

Network Requests Diagram

kenkyusha.co.jp

419 ms

1106 ms

index.php

1011 ms

xoops.css

491 ms

common.css

492 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that all of those requests were addressed to Kenkyusha.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Kenkyusha.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 30.1 kB (13%)

Content Size

240.0 kB

After Optimization

209.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kenkyusha.co.jp main page is 240.0 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. 20% of websites need less resources to load. Images take 197.9 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 17.8 kB

  • Original 24.8 kB
  • After minification 23.6 kB
  • After compression 7.0 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 17.8 kB or 72% of the original size.

Image Optimization

-5%

Potential reduce by 10.7 kB

  • Original 197.9 kB
  • After minification 187.2 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. Kenkyusha images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 613 B

  • Original 13.5 kB
  • After minification 13.5 kB
  • After compression 12.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-27%

Potential reduce by 1.0 kB

  • Original 3.7 kB
  • After minification 3.7 kB
  • After compression 2.7 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. Kenkyusha.co.jp needs all CSS files to be minified and compressed as it can save up to 1.0 kB or 27% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (39%)

Requests Now

31

After Optimization

19

  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kenkyusha. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

kenkyusha.co.jp

kenkyusha.co.jp

419 ms

1106 ms

index.php

index.php

1011 ms

xoops.css

xoops.css

491 ms

common.css

common.css

492 ms

style.css

style.css

492 ms

ecl.js

ecl.js

841 ms

convEUC2JIS.js

convEUC2JIS.js

507 ms

r_search_KOD.js

r_search_KOD.js

521 ms

index.php

index.php

1276 ms

index.css

index.css

532 ms

left_search_top.gif

left_search_top.gif

306 ms

left_search_btn.gif

left_search_btn.gif

489 ms

left_search_bg02.gif

left_search_bg02.gif

507 ms

banner11.gif

banner11.gif

508 ms

banner12.gif

banner12.gif

528 ms

banner19.gif

banner19.gif

915 ms

banner20.gif

banner20.gif

1072 ms

banner18.png

banner18.png

1484 ms

banner01.gif

banner01.gif

1190 ms

banner06.gif

banner06.gif

1207 ms

side_line.jpg

side_line.jpg

1204 ms

banner08.gif

banner08.gif

1594 ms

picBg01.gif

picBg01.gif

1574 ms

banner_20240401.png

banner_20240401.png

2507 ms

picBg03.gif

picBg03.gif

1711 ms

body_bg.gif

body_bg.gif

1457 ms

header.gif

header.gif

2071 ms

left_search_bg01.gif

left_search_bg01.gif

1823 ms

globalMenu.gif

globalMenu.gif

2003 ms

picBg02.gif

picBg02.gif

1969 ms

titleLine01.gif

titleLine01.gif

1977 ms

icon01.gif

icon01.gif

2328 ms

footer.gif

footer.gif

2475 ms

Accessibility Review

kenkyusha.co.jp accessibility score

55

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

High

Links do not have a discernible name

Best Practices

kenkyusha.co.jp best practices score

75

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

SEO Factors

kenkyusha.co.jp SEO score

69

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

    EUC-JP

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 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 Kenkyusha.co.jp main page’s claimed encoding is euc-jp. 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

kenkyusha.co.jp

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