Access isdn-info.co.jp. NTT｜フレッツ光ネクスト /隼、OCNプロバイダ、ひかり電話申込受付

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

7/100

10%

LCP (Largest Contentful Paint)

Value11.9 s

0/100

25%

SI (Speed Index)

Value8.0 s

22/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.239

52/100

15%

TTI (Time to Interactive)

Value9.0 s

33/100

10%

isdn-info.co.jp

849 ms

produce.css

335 ms

isdninfo.css

504 ms

smartRollover.js

338 ms

plusone.js

30 ms

Our browser made a total of 119 requests to load all elements on the main page. We found that 96% of them (114 requests) were addressed to the original Isdn-info.co.jp, 2% (2 requests) were made to Apis.google.com and 2% (2 requests) were made to Ocnbiz.jp. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Isdn-info.co.jp.

Content Size

1.3 MB

After Optimization

1.2 MB

In fact, the total size of Isdn-info.co.jp main page is 1.3 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. 55% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 43.0 kB

Original 52.8 kB
After minification 45.3 kB
After compression 9.7 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 7.5 kB, which is 14% 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 43.0 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 7.3 kB

Original 1.1 MB
After minification 1.1 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. Isdn Info images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 27.7 kB

Original 155.1 kB
After minification 154.8 kB
After compression 127.4 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 27.7 kB or 18% of the original size.

CSS Optimization

-84%

Potential reduce by 31.9 kB

Original 37.9 kB
After minification 30.8 kB
After compression 6.0 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. Isdn-info.co.jp needs all CSS files to be minified and compressed as it can save up to 31.9 kB or 84% of the original size.

Requests Now

118

After Optimization

105

The browser has sent 118 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Isdn Info. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts 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 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

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

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

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

High

Links are not crawlable

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 doesn't use legible font sizes

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 Isdn-info.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 Isdn-info.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

isdn-info.co.jp

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

NTT｜フレッツ光ネクスト /隼、OCNプロバイダ、ひかり電話申込受付

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

isdn-info.co.jp

produce.css

isdninfo.css

smartRollover.js

plusone.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

isdn-info.co.jp

produce.css

isdninfo.css

smartRollover.js

plusone.js

jquery.min.js

jquery.bxslider.min.js

jquery.bxslider.css

cb=gapi.loaded_0

back.jpg

logo.gif

202206275warning.png

head_bnr10.jpg

head_bnr12.jpg

g_navi01_off.jpg

g_navi02_on.jpg

g_navi03_off.jpg

g_navi04_off.jpg

g_navi05_off.jpg

g_navi06_off.jpg

g_navi07_off.jpg

g_navi08_off.jpg

crumbs.gif

order07.jpg

lh3_internet_s.gif

smenu_next_giga.gif

smenu_hayabusa.gif

smenu_hikari_cross.gif

smenu_hikari_cross_w.gif

smenu_hikari_cross_houjin.gif

smenu_fletsbusiness.gif

smenu_highspeed.gif

smenu_highspeed_w.gif

smenu_prio.gif

lh3_pro_s.gif

smenu_ocnsokujitu.gif

smenu_provider_p.gif

smenu_provider_b.gif

smenu_provider_hikaricross.gif

smenu_ocn.gif

smenu_usen_net.gif

smenu_infosphere-d.gif

smenu_asahinet.gif