Tools & Wizards About Us
seirin.co.jp screenshot

Report Summary

  • 84

    Performance

    Renders faster than
    88% of other websites

  • 42

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

seirin.co.jp

青林書院

Page Load Speed

5.8 sec in total

First Response

1.3 sec

Resources Loaded

4.3 sec

Page Rendered

186 ms

seirin.co.jp screenshot

About Website

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

青林書院ウェブサイトでは、暮らしに役立つ法律入門書・専門書・実務書の検索およびオンライン購入ができます。憲法、法学、行政法、民法、商法、刑法、刑事訴訟法、民事訴訟法、民事手続法、経済法、知的財産法、国際法、労働法、社会法などあらゆる法律書ニーズにお応え。出版図書目録請求の配布や、おすすめ書籍情報の速報メールマガジンも。

Visit seirin.co.jp

Key Findings

We analyzed Seirin.co.jp page load time and found that the first response time was 1.3 sec and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

seirin.co.jp performance score

84

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

78/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

85/100

25%

SI (Speed Index)

Value5.8 s

50/100

10%

TBT (Total Blocking Time)

Value230 ms

86/100

30%

CLS (Cumulative Layout Shift)

Value0.007

100/100

15%

TTI (Time to Interactive)

Value3.5 s

92/100

10%

Network Requests Diagram

seirin.co.jp

1285 ms

common.css

480 ms

search.js

349 ms

jquery.min.js

1074 ms

scrolltopcontrol.js

364 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that all of those requests were addressed to Seirin.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Seirin.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 104.4 kB (23%)

Content Size

445.3 kB

After Optimization

340.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Seirin.co.jp main page is 445.3 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. 20% of websites need less resources to load. Images take 325.1 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 31.3 kB

  • Original 37.8 kB
  • After minification 24.6 kB
  • After compression 6.5 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 13.2 kB, which is 35% 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 31.3 kB or 83% of the original size.

Image Optimization

-5%

Potential reduce by 17.5 kB

  • Original 325.1 kB
  • After minification 307.6 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. Seirin images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 50.7 kB

  • Original 76.4 kB
  • After minification 74.8 kB
  • After compression 25.7 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 50.7 kB or 66% of the original size.

CSS Optimization

-81%

Potential reduce by 4.8 kB

  • Original 6.0 kB
  • After minification 4.1 kB
  • After compression 1.2 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. Seirin.co.jp needs all CSS files to be minified and compressed as it can save up to 4.8 kB or 81% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

45

After Optimization

45

  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Seirin. According to our analytics all requests are already optimized.

Network Requests Diagram

seirin.co.jp

seirin.co.jp

1285 ms

common.css

common.css

480 ms

search.js

search.js

349 ms

jquery.min.js

jquery.min.js

1074 ms

scrolltopcontrol.js

scrolltopcontrol.js

364 ms

01681.jpg

01681.jpg

507 ms

logo_seirin.gif

logo_seirin.gif

352 ms

btn_gocart.gif

btn_gocart.gif

179 ms

top_banner.jpg

top_banner.jpg

480 ms

midashi_news.jpg

midashi_news.jpg

347 ms

spacer.gif

spacer.gif

179 ms

midashi_shinkan.jpg

midashi_shinkan.jpg

480 ms

btn_mnews.jpg

btn_mnews.jpg

355 ms

btn_catalog.jpg

btn_catalog.jpg

531 ms

catalog_2016.jpg

catalog_2016.jpg

2429 ms

midashi_osusume.jpg

midashi_osusume.jpg

528 ms

midashi_shoseki.jpg

midashi_shoseki.jpg

532 ms

midashi_annai.jpg

midashi_annai.jpg

639 ms

midashi_oshirase.jpg

midashi_oshirase.jpg

798 ms

logo_tousyakyou.jpg

logo_tousyakyou.jpg

703 ms

logo_toubenkyou.jpg

logo_toubenkyou.jpg

1236 ms

cpi_logo.jpg

cpi_logo.jpg

709 ms

up.png

up.png

798 ms

01677.jpg

01677.jpg

459 ms

01676.jpg

01676.jpg

479 ms

01674.jpg

01674.jpg

496 ms

01675.jpg

01675.jpg

495 ms

01671.jpg

01671.jpg

521 ms

01672.jpg

01672.jpg

609 ms

01671.jpg

01671.jpg

624 ms

01669.jpg

01669.jpg

654 ms

01663.jpg

01663.jpg

679 ms

01660.jpg

01660.jpg

680 ms

01664.jpg

01664.jpg

717 ms

01662.jpg

01662.jpg

770 ms

01657.jpg

01657.jpg

789 ms

01659.jpg

01659.jpg

833 ms

01661.jpg

01661.jpg

863 ms

01658.jpg

01658.jpg

863 ms

01655.jpg

01655.jpg

913 ms

01651.jpg

01651.jpg

930 ms

01640.jpg

01640.jpg

954 ms

01646.jpg

01646.jpg

1008 ms

01652.jpg

01652.jpg

1047 ms

01589.jpg

01589.jpg

1046 ms

search_txt.gif

search_txt.gif

178 ms

Accessibility Review

seirin.co.jp accessibility score

42

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.

Tables and lists

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

Impact

Issue

High

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

seirin.co.jp best practices score

58

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

SEO Factors

seirin.co.jp SEO score

67

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

    N/A

  • Encoding

    SHIFT_JIS

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

seirin.co.jp

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