Tools & Wizards About Us

Report Summary

  • 30

    Performance

    Renders faster than
    50% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

yuhikaku.co.jp

トップページ | 有斐閣

Page Load Speed

11.3 sec in total

First Response

360 ms

Resources Loaded

10.7 sec

Page Rendered

237 ms

About Website

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

明治10年創業の出版社です。法学、経済学、人文科学一般に関する書籍を発行しています。 定期刊行物は，年版の『六法全書』，『ポケット六法』，『有斐閣判例六法』，『有斐閣判例六法Professional』などを，定期雑誌では『ジュリスト』，『法学教室』を刊行しています。HPでは，電子書籍やオンデマンド出版のご案内もしています。

Visit yuhikaku.co.jp

Key Findings

We analyzed Yuhikaku.co.jp page load time and found that the first response time was 360 ms and then it took 10.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

yuhikaku.co.jp performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.4 s

2/100

10%

LCP (Largest Contentful Paint)

Value9.6 s

0/100

25%

SI (Speed Index)

Value18.1 s

0/100

10%

TBT (Total Blocking Time)

Value290 ms

80/100

30%

CLS (Cumulative Layout Shift)

Value0.309

38/100

15%

TTI (Time to Interactive)

Value20.2 s

2/100

10%

Network Requests Diagram

yuhikaku.co.jp

360 ms

yuhikaku.co.jp

1555 ms

gtm.js

57 ms

js

113 ms

ltf_brw.css

338 ms

Our browser made a total of 324 requests to load all elements on the main page. We found that 97% of them (313 requests) were addressed to the original Yuhikaku.co.jp, 1% (3 requests) were made to Googletagmanager.com and 1% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Yuhikaku.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 241.6 kB (4%)

Content Size

5.4 MB

After Optimization

5.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Yuhikaku.co.jp main page is 5.4 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 5.0 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 102.2 kB

  • Original 117.0 kB
  • After minification 99.6 kB
  • After compression 14.7 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 17.4 kB, which is 15% 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 102.2 kB or 87% of the original size.

Image Optimization

-1%

Potential reduce by 54.6 kB

  • Original 5.0 MB
  • After minification 5.0 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. Yuhikaku images are well optimized though.

JavaScript Optimization

-36%

Potential reduce by 80.9 kB

  • Original 224.3 kB
  • After minification 224.2 kB
  • After compression 143.4 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 80.9 kB or 36% of the original size.

CSS Optimization

-21%

Potential reduce by 3.8 kB

  • Original 18.3 kB
  • After minification 18.2 kB
  • After compression 14.4 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. Yuhikaku.co.jp needs all CSS files to be minified and compressed as it can save up to 3.8 kB or 21% of the original size.

Requests Breakdown

Number of requests can be reduced by 65 (20%)

Requests Now

321

After Optimization

256

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 321 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Yuhikaku. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

yuhikaku.co.jp accessibility score

62

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

ARIA toggle fields do not have accessible names

High

ARIA IDs are not unique

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.

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

yuhikaku.co.jp best practices score

50

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

yuhikaku.co.jp SEO score

54

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Yuhikaku.co.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Yuhikaku.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

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