Access seikaisha.co.jp. 星海社

Report Summary

About Website

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

星海社は、新しいテクノロジーの力を得た新しい才能が放つ新しい輝きを信じて、あなたの「人生のカーブを切らせる」出版社です。

Visit seikaisha.co.jp

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

55/100

10%

LCP (Largest Contentful Paint)

Value7.8 s

3/100

25%

SI (Speed Index)

Value9.9 s

10/100

10%

TBT (Total Blocking Time)

Value630 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0.014

100/100

15%

TTI (Time to Interactive)

Value7.1 s

52/100

10%

seikaisha.co.jp

355 ms

www.seikaisha.co.jp

405 ms

gtm.js

57 ms

importer.css

395 ms

loader.js

404 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 93% of them (85 requests) were addressed to the original Seikaisha.co.jp, 3% (3 requests) were made to Googletagmanager.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Seikaisha.co.jp.

Content Size

887.1 kB

After Optimization

749.9 kB

In fact, the total size of Seikaisha.co.jp main page is 887.1 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. 40% of websites need less resources to load. Images take 649.2 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 85.4 kB

Original 104.0 kB
After minification 98.9 kB
After compression 18.6 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 85.4 kB or 82% of the original size.

Image Optimization

-6%

Potential reduce by 37.8 kB

Original 649.2 kB
After minification 611.5 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. Seikaisha images are well optimized though.

JavaScript Optimization

-10%

Potential reduce by 13.2 kB

Original 126.8 kB
After minification 126.7 kB
After compression 113.6 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

-11%

Potential reduce by 803 B

Original 7.0 kB
After minification 6.6 kB
After compression 6.2 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. Seikaisha.co.jp needs all CSS files to be minified and compressed as it can save up to 803 B or 11% of the original size.

Requests Now

After Optimization

The browser has sent 89 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Seikaisha. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

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 Seikaisha.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 Seikaisha.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

seikaisha.co.jp

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

星海社 | Seikaisha

Page Load Speed

First Response

Resources Loaded

Page Rendered