Tools & Wizards About Us

Report Summary

  • 59

    Performance

    Renders faster than
    74% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

digitalcast.jp

デジタルキャスト (DigitalCast) | 英語が学べる動画サイト

Page Load Speed

3.5 sec in total

First Response

504 ms

Resources Loaded

2.6 sec

Page Rendered

346 ms

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。

Visit digitalcast.jp

Key Findings

We analyzed Digitalcast.jp page load time and found that the first response time was 504 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

digitalcast.jp performance score

59

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

88/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

71/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value790 ms

37/100

30%

CLS (Cumulative Layout Shift)

Value0.108

87/100

15%

TTI (Time to Interactive)

Value8.2 s

40/100

10%

Network Requests Diagram

digitalcast.jp

504 ms

digitalcast.jp

1257 ms

js

54 ms

gpt.js

102 ms

logo.png

523 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 20% of them (4 requests) were addressed to the original Digitalcast.jp, 30% (6 requests) were made to Tpc.googlesyndication.com and 20% (4 requests) were made to E1d412a7045402167fe448c66148115a.safeframe.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Digitalcast.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 82.3 kB (26%)

Content Size

318.0 kB

After Optimization

235.7 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Digitalcast.jp main page is 318.0 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. 25% of websites need less resources to load. Javascripts take 147.2 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 80.8 kB

  • Original 100.7 kB
  • After minification 100.7 kB
  • After compression 19.9 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 80.8 kB or 80% of the original size.

Image Optimization

-2%

Potential reduce by 1.1 kB

  • Original 70.2 kB
  • After minification 69.0 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. Digital Cast images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 342 B

  • Original 147.2 kB
  • After minification 147.2 kB
  • After compression 146.8 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 8 (53%)

Requests Now

15

After Optimization

7

  • AJAX
  • Images
  • JavaScript

The browser has sent 15 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 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

digitalcast.jp accessibility score

100

Accessibility Issues

Best Practices

digitalcast.jp best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

digitalcast.jp SEO score

100

Search Engine Optimization Advices

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

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

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: