Tools & Wizards About Us
historychannel.co.jp screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 75% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 89

    SEO

    Google-friendlier than
    67% of websites

historychannel.co.jp

日本・世界の歴史＆エンタメ | THE HISTORY CHANNEL JAPAN　ヒストリーチャンネル

Page Load Speed

5.2 sec in total

First Response

578 ms

Resources Loaded

4.3 sec

Page Rendered

310 ms

historychannel.co.jp screenshot

About Website

Visit historychannel.co.jp now to see the best up-to-date HISTORY CHANNEL content for Japan and also check out these interesting facts you probably never knew about historychannel.co.jp

ヒストリーチャンネルは、上質な番組を放送する世界最大で日本唯一の歴史＆エンターテインメント専門チャンネルです。

Visit historychannel.co.jp

Key Findings

We analyzed Historychannel.co.jp page load time and found that the first response time was 578 ms and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

historychannel.co.jp performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value41.8 s

0/100

25%

SI (Speed Index)

Value13.5 s

2/100

10%

TBT (Total Blocking Time)

Value520 ms

56/100

30%

CLS (Cumulative Layout Shift)

Value0.084

93/100

15%

TTI (Time to Interactive)

Value23.6 s

1/100

10%

Network Requests Diagram

historychannel.co.jp

578 ms

www.historychannel.co.jp

783 ms

common.css

465 ms

ga.js

344 ms

lib.js

903 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that 89% of them (72 requests) were addressed to the original Historychannel.co.jp, 2% (2 requests) were made to Google-analytics.com and 2% (2 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Historychannel.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 269.4 kB (17%)

Content Size

1.6 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Historychannel.co.jp main page is 1.6 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. 40% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 27.6 kB

  • Original 35.3 kB
  • After minification 30.0 kB
  • After compression 7.7 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 5.3 kB, which is 15% 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 27.6 kB or 78% of the original size.

Image Optimization

-4%

Potential reduce by 53.9 kB

  • Original 1.3 MB
  • After minification 1.2 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. HISTORY CHANNEL images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 167.9 kB

  • Original 267.3 kB
  • After minification 264.5 kB
  • After compression 99.3 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 167.9 kB or 63% of the original size.

CSS Optimization

-84%

Potential reduce by 19.9 kB

  • Original 23.8 kB
  • After minification 18.0 kB
  • After compression 3.9 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. Historychannel.co.jp needs all CSS files to be minified and compressed as it can save up to 19.9 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (33%)

Requests Now

76

After Optimization

51

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of HISTORY CHANNEL. 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.

Network Requests Diagram

historychannel.co.jp

historychannel.co.jp

578 ms

www.historychannel.co.jp

www.historychannel.co.jp

783 ms

common.css

common.css

465 ms

ga.js

ga.js

344 ms

lib.js

lib.js

903 ms

common.js

common.js

331 ms

conversion.js

conversion.js

14 ms

s_retargeting.js

s_retargeting.js

560 ms

ga.js

ga.js

39 ms

footer_bg.png

footer_bg.png

173 ms

header_bg.png

header_bg.png

157 ms

h1.png

h1.png

160 ms

header-title.png

header-title.png

312 ms

header-searchbox-text.png

header-searchbox-text.png

314 ms

header-searchbox-submit.png

header-searchbox-submit.png

343 ms

header-btn-english.png

header-btn-english.png

357 ms

header-btn-facebook.png

header-btn-facebook.png

666 ms

header-btn-tweet.png

header-btn-tweet.png

467 ms

header-btn-blog.png

header-btn-blog.png

469 ms

header-nav.png

header-nav.png

514 ms

key.jpg

key.jpg

1424 ms

key.jpg

key.jpg

1088 ms

key.jpg

key.jpg

1245 ms

key.jpg

key.jpg

1370 ms

ticker_bg.png

ticker_bg.png

774 ms

ticker_nowonair.png

ticker_nowonair.png

844 ms

ticker_topics.png

ticker_topics.png

955 ms

bnr_brand.jpg

bnr_brand.jpg

1198 ms

bnr_nihonshi.jpg

bnr_nihonshi.jpg

1137 ms

h2_bg.png

h2_bg.png

1243 ms

h2_this-month-rec.png

h2_this-month-rec.png

1319 ms

red-border_3.png

red-border_3.png

1376 ms

s.jpg

s.jpg

1397 ms

lightgray_bg.png

lightgray_bg.png

1399 ms

gray-dotborder_3.png

gray-dotborder_3.png

1499 ms

s.jpg

s.jpg

1541 ms

s.jpg

s.jpg

1909 ms

s.jpg

s.jpg

1554 ms

s.jpg

s.jpg

1556 ms

s.jpg

s.jpg

1600 ms

btn_pagetop.png

btn_pagetop.png

1679 ms

h3_bg.png

h3_bg.png

1711 ms

h3_thismonth.png

h3_thismonth.png

1690 ms

thismonth-mov-thum.jpg

thismonth-mov-thum.jpg

1689 ms

__utm.gif

__utm.gif

12 ms

collect

collect

60 ms

bnr_skaper_1603.jpg

bnr_skaper_1603.jpg

1628 ms

h3_timetable.png

h3_timetable.png

1704 ms

03.png

03.png

1697 ms

h3_guide.png

h3_guide.png

1557 ms

03.png

03.png

1575 ms

twitter.gif

twitter.gif

1621 ms

facebook.gif

facebook.gif

1687 ms

bnr_brand.jpg

bnr_brand.jpg

1557 ms

bnr_award.jpg

bnr_award.jpg

1556 ms

bnr_15th.jpg

bnr_15th.jpg

1550 ms

64 ms

bnr_nihonshi.jpg

bnr_nihonshi.jpg

1476 ms

23 ms

bnr_bushou.jpg

bnr_bushou.jpg

1475 ms

34 ms

27 ms

h3_regular.png

h3_regular.png

1403 ms

bnr_otakara.jpg

bnr_otakara.jpg

1335 ms

bnr_mistery_x.jpg

bnr_mistery_x.jpg

1267 ms

bnr_meisya.jpg

bnr_meisya.jpg

1141 ms

bnr_wild.jpg

bnr_wild.jpg

1131 ms

bnr_jcom4.jpg

bnr_jcom4.jpg

1120 ms

sky_bnr.jpg

sky_bnr.jpg

1091 ms

bnr_hikari.jpg

bnr_hikari.jpg

1090 ms

bnr_skaper.gif

bnr_skaper.gif

1087 ms

bnr_lng.jpg

bnr_lng.jpg

1034 ms

bnr_vta.gif

bnr_vta.gif

1069 ms

bnr_hanzai.jpg

bnr_hanzai.jpg

1099 ms

footer-nav_pipe.png

footer-nav_pipe.png

1089 ms

footer-qr.png

footer-qr.png

1067 ms

footer-copyright.png

footer-copyright.png

1074 ms

footer-privacy.gif

footer-privacy.gif

1042 ms

float_ban_close.png

float_ban_close.png

1066 ms

bnr_15th.jpg

bnr_15th.jpg

1086 ms

h1_on.png

h1_on.png

1043 ms

Accessibility Review

historychannel.co.jp accessibility score

90

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Names and labels

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.

Impact

Issue

High

Links do not have a discernible name

Best Practices

historychannel.co.jp best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

historychannel.co.jp SEO score

89

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

High

Tap targets are not sized appropriately

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 Historychannel.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 Historychannel.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

historychannel.co.jp

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