Tools & Wizards About Us
nhkvideobank.com screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

nhkvideobank.com

NHK Video Bank is Japan's largest stock footage video archive│

Page Load Speed

13.5 sec in total

First Response

539 ms

Resources Loaded

12.1 sec

Page Rendered

906 ms

nhkvideobank.com screenshot

About Website

Visit nhkvideobank.com now to see the best up-to-date NHK Video Bank content and also check out these interesting facts you probably never knew about nhkvideobank.com

NHK Video Bank provides prestigious Japanese public broadcaster NHK's video collection, featuring millions of precious historical, news, documentary, wildlife and other creative content including...

Visit nhkvideobank.com

Key Findings

We analyzed Nhkvideobank.com page load time and found that the first response time was 539 ms and then it took 13 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

nhkvideobank.com performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.8 s

1/100

10%

LCP (Largest Contentful Paint)

Value18.9 s

0/100

25%

SI (Speed Index)

Value11.5 s

5/100

10%

TBT (Total Blocking Time)

Value510 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0.319

36/100

15%

TTI (Time to Interactive)

Value22.3 s

1/100

10%

Network Requests Diagram

nhkvideobank.com

539 ms

nhkvideobank.com

1185 ms

utility.css

199 ms

common.css

396 ms

common_tablet.css

577 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 82% of them (69 requests) were addressed to the original Nhkvideobank.com, 4% (3 requests) were made to Trace.bluemonkey.jp and 2% (2 requests) were made to Clarity.ms. The less responsive or slowest element that took the longest time to load (5.8 sec) belongs to the original domain Nhkvideobank.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (4%)

Content Size

32.8 MB

After Optimization

31.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nhkvideobank.com main page is 32.8 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. 60% of websites need less resources to load. Images take 32.6 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 24.7 kB

  • Original 30.9 kB
  • After minification 27.2 kB
  • After compression 6.1 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 3.7 kB, which is 12% 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 24.7 kB or 80% of the original size.

Image Optimization

-3%

Potential reduce by 1.1 MB

  • Original 32.6 MB
  • After minification 31.4 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. NHK Video Bank images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 87.9 kB

  • Original 140.8 kB
  • After minification 130.3 kB
  • After compression 53.0 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 87.9 kB or 62% of the original size.

CSS Optimization

-86%

Potential reduce by 44.3 kB

  • Original 51.4 kB
  • After minification 24.6 kB
  • After compression 7.1 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. Nhkvideobank.com needs all CSS files to be minified and compressed as it can save up to 44.3 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (38%)

Requests Now

80

After Optimization

50

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 80 CSS, Javascripts, AJAX and image requests in order to completely render the main page of NHK Video Bank. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

nhkvideobank.com

nhkvideobank.com

539 ms

nhkvideobank.com

nhkvideobank.com

1185 ms

utility.css

utility.css

199 ms

common.css

common.css

396 ms

common_tablet.css

common_tablet.css

577 ms

common_smartphone.css

common_smartphone.css

578 ms

top.css

top.css

579 ms

top_tablet.css

top_tablet.css

579 ms

top_smartphone.css

top_smartphone.css

594 ms

drawer.css

drawer.css

593 ms

css

css

39 ms

jquery-1.11.1.min.js

jquery-1.11.1.min.js

1149 ms

iscroll.min.js

iscroll.min.js

27 ms

drawer.min.js

drawer.min.js

766 ms

jquery.biggerlink.min.js

jquery.biggerlink.min.js

767 ms

scrolltopcontrol.js

scrolltopcontrol.js

767 ms

smoothScroll.js

smoothScroll.js

788 ms

jquery.matchHeight-min.js

jquery.matchHeight-min.js

788 ms

media_archive.js

media_archive.js

956 ms

utilities.js

utilities.js

959 ms

bm_blogtag_loader_top.js

bm_blogtag_loader_top.js

959 ms

trace.js

trace.js

27 ms

uh.js

uh.js

713 ms

5vcswdhqmc

5vcswdhqmc

147 ms

gtm.js

gtm.js

123 ms

logo.png

logo.png

229 ms

4k_logo.jpg

4k_logo.jpg

227 ms

top_btn_scroll.png

top_btn_scroll.png

227 ms

top_movie.jpg

top_movie.jpg

1781 ms

top_outline_bg.jpg

top_outline_bg.jpg

3308 ms

top_outline_btn01.png

top_outline_btn01.png

229 ms

top_outline_btn02.png

top_outline_btn02.png

392 ms

top_outline_btn03.png

top_outline_btn03.png

393 ms

top_popular_img01.jpg

top_popular_img01.jpg

794 ms

top_popular_img02.jpg

top_popular_img02.jpg

798 ms

top_popular_img03.jpg

top_popular_img03.jpg

584 ms

top_popular_img04.jpg

top_popular_img04.jpg

774 ms

NVBYT166%E7%99%BD%E5%B4%8E%E6%B5%B7%E5%B2%B8.jpg

NVBYT166%E7%99%BD%E5%B4%8E%E6%B5%B7%E5%B2%B8.jpg

1424 ms

NVBYT169%E5%87%BD%E9%A4%A8%E5%B1%80%E3%82%AF%E3%83%AD%E3%83%9E%E3%82%B0%E3%83%ADT0552.10_00_14_04.%E9%9D%99%E6%AD%A2%E7%94%BB.jpg

NVBYT169%E5%87%BD%E9%A4%A8%E5%B1%80%E3%82%AF%E3%83%AD%E3%83%9E%E3%82%B0%E3%83%ADT0552.10_00_14_04.%E9%9D%99%E6%AD%A2%E7%94%BB.jpg

1566 ms

NVBYT165%E6%B5%B7%E9%9C%A7.jpg

NVBYT165%E6%B5%B7%E9%9C%A7.jpg

1438 ms

NVBYT162.jpg

NVBYT162.jpg

1631 ms

NVBYT163.jpg

NVBYT163.jpg

3603 ms

NVBYT164.jpg

NVBYT164.jpg

3215 ms

NVBYT161.jpg

NVBYT161.jpg

2714 ms

NBVYT160.jpg

NBVYT160.jpg

5021 ms

top_box03_left_bg.jpg

top_box03_left_bg.jpg

1971 ms

top_box03_right_bg.jpg

top_box03_right_bg.jpg

2170 ms

footer_bg.jpg

footer_bg.jpg

2363 ms

icon_pint.png

icon_pint.png

2555 ms

icon_twtr.png

icon_twtr.png

2746 ms

icon_fb.png

icon_fb.png

2905 ms

icon_in.png

icon_in.png

2938 ms

icon_gplus.png

icon_gplus.png

3097 ms

widgets.js

widgets.js

76 ms

nhkvideobank.com

nhkvideobank.com

522 ms

3258 ms

tag01

tag01

3389 ms

pagetop.gif

pagetop.gif

3311 ms

NGSpv5_NC0k9P_v6ZUCbLRAHxK1EiSysdUmj.ttf

NGSpv5_NC0k9P_v6ZUCbLRAHxK1EiSysdUmj.ttf

67 ms

NGSpv5_NC0k9P_v6ZUCbLRAHxK1EbiusdUmj.ttf

NGSpv5_NC0k9P_v6ZUCbLRAHxK1EbiusdUmj.ttf

105 ms

clarity.js

clarity.js

71 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

48 ms

settings

settings

108 ms

script.js

script.js

3 ms

NVBYT089.jpg

NVBYT089.jpg

809 ms

NVBYT069.jpg

NVBYT069.jpg

766 ms

NVBYT117.png

NVBYT117.png

260 ms

NVBYT106.jpg

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321 ms

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NVBYT104.jpg

1209 ms

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NVBYT103.jpg

1250 ms

NVBYT110..jpg

NVBYT110..jpg

1279 ms

NVBYT155.jpg

NVBYT155.jpg

1720 ms

NVBYT120.jpg

NVBYT120.jpg

1383 ms

NVBYT119.jpg

NVBYT119.jpg

1787 ms

NVBYT157.jpg

NVBYT157.jpg

2036 ms

NVBYT156.jpg

NVBYT156.jpg

1661 ms

NVBYT154.jpg

NVBYT154.jpg

1766 ms

arr_next.gif

arr_next.gif

1854 ms

NVBYT068.jpg

NVBYT068.jpg

5754 ms

NVBYT075.jpg

NVBYT075.jpg

2483 ms

NVBYT112.jpg

NVBYT112.jpg

2150 ms

NVBYT072.jpg

NVBYT072.jpg

3172 ms

NVBYT092.jpg

NVBYT092.jpg

2648 ms

c.gif

c.gif

11 ms

Accessibility Review

nhkvideobank.com accessibility score

83

Accessibility Issues

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

nhkvideobank.com 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

SEO Factors

nhkvideobank.com SEO score

91

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nhkvideobank.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Nhkvideobank.com 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

nhkvideobank.com

Open Graph description is not detected on the main page of NHK Video Bank. 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: