Access dstation.jp. 【ディードットステーション】パソコン教室ならディードット!

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

11/100

10%

LCP (Largest Contentful Paint)

Value8.1 s

2/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value720 ms

41/100

30%

CLS (Cumulative Layout Shift)

Value0.595

11/100

15%

TTI (Time to Interactive)

Value7.2 s

51/100

10%

dstation.jp

566 ms

dstation.jp

991 ms

import.css

369 ms

animate.css

724 ms

jquery.bxslider.css

556 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that 87% of them (62 requests) were addressed to the original Dstation.jp, 4% (3 requests) were made to Use.fontawesome.com and 3% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Dstation.jp.

Content Size

7.5 MB

After Optimization

7.2 MB

In fact, the total size of Dstation.jp main page is 7.5 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. 45% of websites need less resources to load. Images take 7.2 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 26.7 kB

Original 32.6 kB
After minification 28.3 kB
After compression 5.8 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 4.2 kB, which is 13% 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 26.7 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 147.9 kB

Original 7.2 MB
After minification 7.1 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. Dstation images are well optimized though.

JavaScript Optimization

-30%

Potential reduce by 25.6 kB

Original 84.6 kB
After minification 78.4 kB
After compression 59.0 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 25.6 kB or 30% of the original size.

CSS Optimization

-79%

Potential reduce by 107.1 kB

Original 136.1 kB
After minification 112.0 kB
After compression 29.0 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. Dstation.jp needs all CSS files to be minified and compressed as it can save up to 107.1 kB or 79% of the original size.

Requests Now

After Optimization

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dstation. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 7 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 keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

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

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

Links are not crawlable

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

UTF-8

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

dstation.jp

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

【ディードットステーション】パソコン教室ならディードット!

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

dstation.jp

dstation.jp

import.css

animate.css

jquery.bxslider.css

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

dstation.jp

dstation.jp

import.css

animate.css

jquery.bxslider.css

all.css

jquery.min.js

rollover.js

jquery.easing.1.3.js

jquery.bxslider.min.js

jquery.inview.min.js

jquery.tile.js

jquery.tile.detail.js

common.js

js

default.css

common.css

smart.css

ga.js

logo.png

menu_img_01.jpg

menu_img_02.jpg

ico_pref_01.png

ico_pref_02.png

ico_pref_03.png

ico_pref_04.png

ico_pref_05.png

ico_pref_06.png

ico_pref_07.png

main_02.jpg

main_text_02.png

main_01.jpg

main_text.png

main_03.jpg

main_text_03.png

bnr_taiken.png

main_01_sp.jpg

main_text_sp.png

main_02_sp.jpg

main_text_sp_02.png

main_03_sp.jpg

main_text_sp_03.png

bnr_taiken_sp.png