Access kspub.co.jp. 株式会社講談社サイエンティフィク | 自然科学の書籍の出版・企画を行っております。

Report Summary

About Website

Welcome to kspub.co.jp homepage info - get ready to check Kspub best content for Japan right away, or after learning these important things about kspub.co.jp

自然科学の書籍の出版・企画を行っております。

Visit kspub.co.jp

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value14.4 s

0/100

25%

SI (Speed Index)

Value9.4 s

12/100

10%

TBT (Total Blocking Time)

Value240 ms

85/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.1 s

51/100

10%

kspub.co.jp

696 ms

www.kspub.co.jp

1420 ms

base.css

812 ms

mt.js

817 ms

headerimages.js

593 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 91% of them (50 requests) were addressed to the original Kspub.co.jp, 2% (1 request) were made to Googletagmanager.com and 2% (1 request) were made to Googleadservices.com. The less responsive or slowest element that took the longest time to load (4.5 sec) belongs to the original domain Kspub.co.jp.

Content Size

19.0 MB

After Optimization

18.8 MB

In fact, the total size of Kspub.co.jp main page is 19.0 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. 45% of websites need less resources to load. Images take 18.8 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 50.1 kB

Original 61.9 kB
After minification 55.3 kB
After compression 11.8 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 6.6 kB, which is 11% 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 50.1 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 21.3 kB

Original 18.8 MB
After minification 18.7 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. Kspub images are well optimized though.

JavaScript Optimization

-46%

Potential reduce by 27.7 kB

Original 59.7 kB
After minification 48.3 kB
After compression 32.0 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 27.7 kB or 46% of the original size.

CSS Optimization

-92%

Potential reduce by 94.6 kB

Original 103.3 kB
After minification 80.5 kB
After compression 8.7 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. Kspub.co.jp needs all CSS files to be minified and compressed as it can save up to 94.6 kB or 92% of the original size.

Requests Now

After Optimization

The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kspub. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

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.

High

Form elements do not have associated labels

Search Engine Optimization Advices

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 Kspub.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 Kspub.co.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

kspub.co.jp

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

Report Summary

Performance

Accessibility

Best Practices

SEO

株式会社 講談社サイエンティフィク | 自然科学の書籍の出版・企画を行っております。

Page Load Speed

First Response

Resources Loaded

Page Rendered