Access learningsite21.com. ビジネス資格・セミナー・通信教育・eラーニング｜NTTグループのラーニングサイト21 | ビジネス資格・セミナー・通信教育・eラーニングならNTTグループLS21

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

4/100

10%

LCP (Largest Contentful Paint)

Value15.6 s

0/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value200 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0.354

31/100

15%

TTI (Time to Interactive)

Value9.4 s

30/100

10%

learningsite21.com

540 ms

3078 ms

Our browser made a total of 2 requests to load all elements on the main page. We found that all of those requests were addressed to Learningsite21.com and no external sources were called. The less responsive or slowest element that took the longest time to load (3.1 sec) belongs to the original domain Learningsite21.com.

Content Size

2.0 kB

After Optimization

714 B

In fact, the total size of Learningsite21.com main page is 2.0 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. Only 5% of websites need less resources to load. HTML takes 2.0 kB which makes up the majority of the site volume.

HTML Optimization

-63%

Potential reduce by 1.2 kB

Original 2.0 kB
After minification 1.8 kB
After compression 714 B

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 1.2 kB or 63% of the original size.

Requests Now

After Optimization

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

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

Form elements do not have associated labels

High

Links do not have a discernible name

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

Search Engine Optimization Advices

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

High

Links are not crawlable

High

Page is blocked from indexing

Language and Encoding

Language Detected

JA
Language Claimed

JA
Encoding

SJIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Learningsite21.com 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 Learningsite21.com main page’s claimed encoding is sjis. 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

learningsite21.com

Open Graph description is not detected on the main page of Learningsite 21. 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: