Access digitalcast.jp. デジタルキャスト (DigitalCast)

Report Summary

About Website

Welcome to digitalcast.jp homepage info - get ready to check Digital Cast best content for Japan right away, or after learning these important things about digitalcast.jp

デジタルキャストは、英語字幕と日本語字幕の同時表示可能なオリジナル動画プレーヤーを使って、リピーティングやシャドーイング、サイトトランスレーション、ディクテーションといった様々な学習方法を、効果的に行える新しい形の英語学習サイトです。洋楽歌詞の字幕付き音楽PV動画を使った英語学習や、科学やニュースなどの英語動画では、最新のキーワードや専門用語も身に付けることができます。

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name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

85/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value6.4 s

40/100

10%

TBT (Total Blocking Time)

Value580 ms

51/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.8 s

45/100

10%

digitalcast.jp

1270 ms

dcm12010.css

604 ms

jquery.min.js

47 ms

dcm12018.min.js

633 ms

plusone.js

65 ms

Our browser made a total of 122 requests to load all elements on the main page. We found that 27% of them (33 requests) were addressed to the original Digitalcast.jp, 17% (21 requests) were made to Pbs.twimg.com and 15% (18 requests) were made to Static.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Digitalcast.jp.

Content Size

2.1 MB

After Optimization

1.5 MB

In fact, the total size of Digitalcast.jp main page is 2.1 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. 70% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 244.8 kB

Original 333.1 kB
After minification 333.0 kB
After compression 88.3 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 244.8 kB or 73% of the original size.

Image Optimization

-8%

Potential reduce by 104.1 kB

Original 1.4 MB
After minification 1.3 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. Digital Cast images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 221.7 kB

Original 349.7 kB
After minification 349.7 kB
After compression 128.0 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 221.7 kB or 63% of the original size.

CSS Optimization

-85%

Potential reduce by 34.9 kB

Original 41.0 kB
After minification 33.2 kB
After compression 6.1 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. Digitalcast.jp needs all CSS files to be minified and compressed as it can save up to 34.9 kB or 85% of the original size.

Requests Now

121

After Optimization

The browser has sent 121 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Digital Cast. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 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 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

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

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 Digitalcast.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 Digitalcast.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

digitalcast.jp

Open Graph data is detected on the main page of Digital Cast. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

Report Summary

Performance

Accessibility

Best Practices

SEO

デジタルキャスト (DigitalCast) | 英語が学べる動画サイト

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)