Tools & Wizards About Us

Report Summary

  • 61

    Performance

    Renders faster than
    76% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

hayakawa-online.co.jp

早川書房オフィシャルサイト｜ミステリ・SF・海外文学・ノンフィクションの世界へ

Page Load Speed

7 sec in total

First Response

517 ms

Resources Loaded

6.3 sec

Page Rendered

168 ms

About Website

Click here to check amazing Hayakawa Online content for Japan. Otherwise, check out these important facts you probably never knew about hayakawa-online.co.jp

早川書房オフィシャルサイトでは、ミステリ、SF、海外文学、ノンフィクションの名作から最新刊まで、幅広いジャンルを網羅した書籍の情報を提供しています。 作家インタビュー、イベント情報、電子書籍の配信など、読書体験を豊かにする多彩なコンテンツが充実。 読者の皆様に愛される作品を届け続けてきた私たちの歴史やこだわり、最新の刊行情報もお楽しみいただけます。 早川書房の世界を、こちらの公式サイトからご堪能く...

Visit hayakawa-online.co.jp

Key Findings

We analyzed Hayakawa-online.co.jp page load time and found that the first response time was 517 ms and then it took 6.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

hayakawa-online.co.jp performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value4.5 s

37/100

25%

SI (Speed Index)

Value9.0 s

15/100

10%

TBT (Total Blocking Time)

Value200 ms

89/100

30%

CLS (Cumulative Layout Shift)

Value0.101

89/100

15%

TTI (Time to Interactive)

Value7.2 s

50/100

10%

Network Requests Diagram

hayakawa-online.co.jp

517 ms

www.hayakawa-online.co.jp

1268 ms

m_sys_common.css

873 ms

import.css

695 ms

jquery.min.js

893 ms

Our browser made a total of 131 requests to load all elements on the main page. We found that 21% of them (27 requests) were addressed to the original Hayakawa-online.co.jp, 36% (47 requests) were made to Gigaplus.makeshop.jp and 19% (25 requests) were made to Makeshop-multi-images.akamaized.net. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Gigaplus.makeshop.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 135.3 kB (17%)

Content Size

811.3 kB

After Optimization

676.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Hayakawa-online.co.jp main page is 811.3 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. 55% of websites need less resources to load. Images take 566.0 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 43.6 kB

  • Original 53.6 kB
  • After minification 46.9 kB
  • After compression 9.9 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 12% 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 43.6 kB or 81% of the original size.

Image Optimization

-7%

Potential reduce by 39.5 kB

  • Original 566.0 kB
  • After minification 526.5 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. Hayakawa Online images are well optimized though.

JavaScript Optimization

-29%

Potential reduce by 48.2 kB

  • Original 166.0 kB
  • After minification 166.0 kB
  • After compression 117.8 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 48.2 kB or 29% of the original size.

CSS Optimization

-15%

Potential reduce by 4.0 kB

  • Original 25.7 kB
  • After minification 25.5 kB
  • After compression 21.8 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. Hayakawa-online.co.jp needs all CSS files to be minified and compressed as it can save up to 4.0 kB or 15% of the original size.

Requests Breakdown

Number of requests can be reduced by 58 (45%)

Requests Now

128

After Optimization

70

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 128 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Hayakawa Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

hayakawa-online.co.jp accessibility score

61

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

hayakawa-online.co.jp best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

hayakawa-online.co.jp SEO score

67

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

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

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

    EUC-JP

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Hayakawa-online.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 Hayakawa-online.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

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