Access jbpa.or.jp. 一般社団法人　日本書籍出版協会 | 一般社団法人　日本書籍出版協会

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

27/100

25%

SI (Speed Index)

Value7.3 s

29/100

10%

TBT (Total Blocking Time)

Value150 ms

94/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value6.8 s

54/100

10%

jbpa.or.jp

1206 ms

DropDownMenu.js

396 ms

import.css

401 ms

jquery.min.js

70 ms

acco.js

409 ms

Our browser made a total of 120 requests to load all elements on the main page. We found that 89% of them (107 requests) were addressed to the original Jbpa.or.jp, 8% (9 requests) were made to Google.com and 3% (3 requests) were made to Cse.google.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Jbpa.or.jp.

Content Size

355.8 kB

After Optimization

253.6 kB

In fact, the total size of Jbpa.or.jp main page is 355.8 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. 30% of websites need less resources to load. Images take 168.7 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 29.2 kB

Original 39.3 kB
After minification 35.7 kB
After compression 10.1 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 29.2 kB or 74% of the original size.

Image Optimization

-10%

Potential reduce by 16.5 kB

Original 168.7 kB
After minification 152.2 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. Jbpa images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 2.1 kB

Original 83.4 kB
After minification 82.1 kB
After compression 81.3 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

-85%

Potential reduce by 54.4 kB

Original 64.3 kB
After minification 46.7 kB
After compression 10.0 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. Jbpa.or.jp needs all CSS files to be minified and compressed as it can save up to 54.4 kB or 85% of the original size.

Requests Now

118

After Optimization

The browser has sent 118 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jbpa. 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 from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

JA
Language Claimed

JA
Encoding

SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jbpa.or.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 Jbpa.or.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

jbpa.or.jp

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

一般社団法人 日本書籍出版協会 | 一般社団法人 日本書籍出版協会

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

jbpa.or.jp

DropDownMenu.js

import.css

jquery.min.js

acco.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

jbpa.or.jp

DropDownMenu.js

import.css

jquery.min.js

acco.js

accordion.css

base.css

style.css

page.css

bg-head.gif

logo.gif

mn-h01.gif

mn-h011.gif

mn-h02.gif

mn-h03.gif

mn-h11.gif

mn-h13.gif

mn-h14.gif

mn-h15.gif

mn-g01.gif

mn-g01-sub01.gif

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mn-g01-sub06.gif

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mn-g01-sub10.gif

mn-g02.gif

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mn-g02-sub02.gif

mn-g03.gif

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一般社団法人　日本書籍出版協会 | 一般社団法人　日本書籍出版協会