Access jl.jpn.org. さくらのレンタルサーバ

name

value

score

weighting

FCP (First Contentful Paint)

Value6.4 s

2/100

10%

LCP (Largest Contentful Paint)

Value9.3 s

1/100

25%

SI (Speed Index)

Value20.0 s

0/100

10%

TBT (Total Blocking Time)

Value5,510 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value56.3 s

0/100

10%

jl.jpn.org

550 ms

xn--nckgh0pybva6bdb7fy706bnfhgyfq54aoh8crw7gx7j.com

1447 ms

import.css

354 ms

index.css

542 ms

smartRollover.js

365 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Jl.jpn.org, 6% (5 requests) were made to Pagead2.googlesyndication.com and 5% (4 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source .

Content Size

541.3 kB

After Optimization

328.3 kB

In fact, the total size of Jl.jpn.org main page is 541.3 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. 45% of websites need less resources to load. Images take 245.8 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 135.5 kB

Original 160.0 kB
After minification 141.4 kB
After compression 24.5 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 18.6 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 135.5 kB or 85% of the original size.

Image Optimization

-1%

Potential reduce by 3.6 kB

Original 245.8 kB
After minification 242.2 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. Jl Jpn images are well optimized though.

JavaScript Optimization

-51%

Potential reduce by 59.8 kB

Original 118.3 kB
After minification 117.0 kB
After compression 58.5 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 59.8 kB or 51% of the original size.

CSS Optimization

-82%

Potential reduce by 14.2 kB

Original 17.2 kB
After minification 13.2 kB
After compression 3.1 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. Jl.jpn.org needs all CSS files to be minified and compressed as it can save up to 14.2 kB or 82% of the original size.

Requests Now

After Optimization

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jl Jpn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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

High

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

High

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

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

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

High

robots.txt is not valid

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

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Jl.jpn.org 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 Jl.jpn.org 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

jl.jpn.org

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

さくらのレンタルサーバ

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

jl.jpn.org

xn--nckgh0pybva6bdb7fy706bnfhgyfq54aoh8crw7gx7j.com

import.css

index.css

smartRollover.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

jl.jpn.org

xn--nckgh0pybva6bdb7fy706bnfhgyfq54aoh8crw7gx7j.com

import.css

index.css

smartRollover.js

common.js

jquery.js

jquery.tablesorter.js

sort.js

default.css

header.css

footer.css

contents_bg.gif

header_bg.jpg

header_logo.jpg

header_company.gif

main_photo.jpg

dotline_gray.gif

point_01.gif

point_02.gif

point_03.gif

point_04.gif

btn_pagetop_off.gif

sort_01up.jpg

sort_02up.jpg

table_icon_w1.jpg

table_icon_o1.jpg

table_icon_w2.jpg

table_icon_w3.jpg

table_icon_o3.jpg

table_icon_o2.jpg

no_1_bg.gif

no_1_top.gif

mark_no1.jpg

btn_no1_detail_off.jpg

cost_bg_0101.jpg

cost_icon_1.jpg

cost_bg_0102.jpg

shinsei.gif

space.gif

mark_pop_sp.gif

btn_site_off.jpg

dotline_kuchi.gif