Tools & Wizards About Us
live2.nicovideo.jp screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

live2.nicovideo.jp

ニコニコ生放送

Page Load Speed

8.7 sec in total

First Response

1.2 sec

Resources Loaded

7 sec

Page Rendered

528 ms

live2.nicovideo.jp screenshot

About Website

Visit live2.nicovideo.jp now to see the best up-to-date Live 2 Nicovideo content for Japan and also check out these interesting facts you probably never knew about live2.nicovideo.jp

【ニコニコ生放送】は無料ですぐに楽しめる日本最大級のライブ配信サービス！最新作のアニメ・音楽ライブ・ゲーム実況・料理・歌ってみたなど、様々な番組をコメントで盛り上がりながら視聴できます。ニコニコ生放送アプリで、誰でも簡単に配信することができます。

Visit live2.nicovideo.jp

Key Findings

We analyzed Live2.nicovideo.jp page load time and found that the first response time was 1.2 sec and then it took 7.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

live2.nicovideo.jp performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value15.7 s

0/100

25%

SI (Speed Index)

Value20.3 s

0/100

10%

TBT (Total Blocking Time)

Value11,250 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value34.8 s

0/100

10%

Network Requests Diagram

live.nicovideo.jp

1158 ms

watching_reservation.css

632 ms

button.css

684 ms

reset.css

520 ms

base.css

858 ms

Our browser made a total of 191 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Live2.nicovideo.jp, 7% (14 requests) were made to Ads.nicovideo.jp and 5% (9 requests) were made to Live.nicovideo.jp. The less responsive or slowest element that took the longest time to load (2.3 sec) relates to the external source Nl.simg.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (49%)

Content Size

2.2 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Live2.nicovideo.jp main page is 2.2 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. 65% of websites need less resources to load. Javascripts take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 150.6 kB

  • Original 180.4 kB
  • After minification 171.2 kB
  • After compression 29.9 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 150.6 kB or 83% of the original size.

Image Optimization

-4%

Potential reduce by 29.4 kB

  • Original 807.4 kB
  • After minification 778.0 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. Live 2 Nicovideo images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 789.1 kB

  • Original 1.1 MB
  • After minification 999.2 kB
  • After compression 317.5 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 789.1 kB or 71% of the original size.

CSS Optimization

-82%

Potential reduce by 118.4 kB

  • Original 145.2 kB
  • After minification 132.1 kB
  • After compression 26.8 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. Live2.nicovideo.jp needs all CSS files to be minified and compressed as it can save up to 118.4 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 112 (60%)

Requests Now

187

After Optimization

75

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 187 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Live 2 Nicovideo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 79 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

live.nicovideo.jp

live.nicovideo.jp

1158 ms

watching_reservation.css

watching_reservation.css

632 ms

button.css

button.css

684 ms

reset.css

reset.css

520 ms

base.css

base.css

858 ms

siteFooter.css

siteFooter.css

711 ms

setCountry.css

setCountry.css

723 ms

mod_basic.css

mod_basic.css

1028 ms

tag_suggest.css

tag_suggest.css

781 ms

top.css

top.css

1186 ms

live_program.css

live_program.css

1064 ms

live_list.css

live_list.css

1123 ms

namaket.css

namaket.css

1080 ms

jquery-1.8.1.min.js

jquery-1.8.1.min.js

1870 ms

tag_suggest_from_ts.js

tag_suggest_from_ts.js

1191 ms

ads-2.10.0.min.js

ads-2.10.0.min.js

976 ms

siteHeader.css

siteHeader.css

334 ms

nicolib-CommonNotificationHeader.css

nicolib-CommonNotificationHeader.css

530 ms

nicolive-modified.css

nicolive-modified.css

350 ms

siteHeader.js

siteHeader.js

352 ms

nicolib-CommonNotificationHeader.js

nicolib-CommonNotificationHeader.js

537 ms

pattern_logger.js

pattern_logger.js

488 ms

jquery-ui-1.8.23.min.js

jquery-ui-1.8.23.min.js

2342 ms

__utm.js

__utm.js

1212 ms

swfobject.js

swfobject.js

1136 ms

prototype-1.6.0.3.js

prototype-1.6.0.3.js

1897 ms

effects.js

effects.js

1535 ms

cookiemanager.js

cookiemanager.js

1318 ms

nicolive.js

nicolive.js

1361 ms

nicolive_cookie.js

nicolive_cookie.js

1499 ms

nicolive_popup.js

nicolive_popup.js

1512 ms

liveinfo.js

liveinfo.js

1680 ms

timeshift_notify.js

timeshift_notify.js

1662 ms

product_serial.js

product_serial.js

1740 ms

jquery.smoothscroll.js

jquery.smoothscroll.js

1847 ms

polling.js

polling.js

1895 ms

notifybox.js

notifybox.js

1896 ms

nico.js

nico.js

1902 ms

jquery.placeholder.js

jquery.placeholder.js

1998 ms

jquery.lazyload.min.js

jquery.lazyload.min.js

2021 ms

nicolive.collection.js

nicolive.collection.js

2056 ms

watching_reservation.js

watching_reservation.js

2058 ms

run.js

run.js

2058 ms

nicolive.index.timeshift_list_reserved.js

nicolive.index.timeshift_list_reserved.js

2142 ms

notify.js

notify.js

534 ms

enquete.js

enquete.js

857 ms

nicolive.top_temp_information.js

nicolive.top_temp_information.js

1870 ms

underscore.js

underscore.js

2134 ms

backbone-min.js

backbone-min.js

1711 ms

backbone.paginator.min.js

backbone.paginator.min.js

1685 ms

nicolive.top.pagination.js

nicolive.top.pagination.js

1754 ms

nicolive.top.indexstreamlist.model.js

nicolive.top.indexstreamlist.model.js

1781 ms

nicolive.top.indexstreamlist.view.js

nicolive.top.indexstreamlist.view.js

1706 ms

nicolive.top.indexstreamlist.controller.js

nicolive.top.indexstreamlist.controller.js

1535 ms

nicolive.top.bookmarklist.model.js

nicolive.top.bookmarklist.model.js

1565 ms

nicolive.top.bookmarklist.view.js

nicolive.top.bookmarklist.view.js

1609 ms

nicolive.top.bookmarklist.controller.js

nicolive.top.bookmarklist.controller.js

1576 ms

nicolive.top.picup.model.js

nicolive.top.picup.model.js

1538 ms

nicolive.top.picup.view.js

nicolive.top.picup.view.js

1537 ms

nicolive.top.picup.controller.js

nicolive.top.picup.controller.js

1474 ms

jquery.countup_animation.js

jquery.countup_animation.js

1486 ms

jquery.newsticker.js

jquery.newsticker.js

1381 ms

jquery.infotooltip.js

jquery.infotooltip.js

1362 ms

jquery.tab.js

jquery.tab.js

1234 ms

jquery.officialrecent.js

jquery.officialrecent.js

1259 ms

jquery.carousel.js

jquery.carousel.js

1231 ms

jquery.premiumbanner.js

jquery.premiumbanner.js

1212 ms

run.js

run.js

1186 ms

co2287121.jpg

co2287121.jpg

866 ms

co2224309.jpg

co2224309.jpg

884 ms

co2164788.jpg

co2164788.jpg

935 ms

co2633561.jpg

co2633561.jpg

758 ms

co1296768.jpg

co1296768.jpg

1321 ms

co2270113.jpg

co2270113.jpg

974 ms

widgets.js

widgets.js

159 ms

icon_information.png

icon_information.png

1320 ms

sdk.js

sdk.js

16 ms

102 ms

logo.svg

logo.svg

1166 ms

glass.png

glass.png

1169 ms

xd_arbiter.php

xd_arbiter.php

32 ms

xd_arbiter.php

xd_arbiter.php

89 ms

live_global_nav.png

live_global_nav.png

1118 ms

editstream.png

editstream.png

1119 ms

splite_arrow.png

splite_arrow.png

1119 ms

splite_icon.png

splite_icon.png

1127 ms

streams_hdg.png

streams_hdg.png

1070 ms

icon_play.png

icon_play.png

1019 ms

date_separate.png

date_separate.png

1081 ms

getAdvertisements.jsonp

getAdvertisements.jsonp

353 ms

pagetop_arrow.png

pagetop_arrow.png

1115 ms

footer_arrow.png

footer_arrow.png

1141 ms

ga.js

ga.js

35 ms

icon_langselector.png

icon_langselector.png

1067 ms

__utm.gif

__utm.gif

29 ms

__utm.gif

__utm.gif

43 ms

arrow_switch_lang.png

arrow_switch_lang.png

1015 ms

collect

collect

79 ms

__utm.gif

__utm.gif

703 ms

getAllAdvertisements.jsonp

getAllAdvertisements.jsonp

337 ms

logImpression.jsonp

logImpression.jsonp

346 ms

logImpression.jsonp

logImpression.jsonp

343 ms

f5b8d04209d87c689040200c248ff44e.jpeg

f5b8d04209d87c689040200c248ff44e.jpeg

1277 ms

797ae5896efed3798aa97c3f4335ce5a.jpeg

797ae5896efed3798aa97c3f4335ce5a.jpeg

1334 ms

getAdvertisements.jsonp

getAdvertisements.jsonp

329 ms

bannertext

bannertext

340 ms

logImpression.jsonp

logImpression.jsonp

341 ms

bannertext

bannertext

315 ms

logImpression.jsonp

logImpression.jsonp

335 ms

bannertext

bannertext

610 ms

logImpression.jsonp

logImpression.jsonp

610 ms

getindexstreamlist

getindexstreamlist

416 ms

getindexstreamlist

getindexstreamlist

452 ms

audience_count.png

audience_count.png

226 ms

102457.bba76a.jpg

102457.bba76a.jpg

480 ms

856787.301ab8.jpg

856787.301ab8.jpg

379 ms

133327.1c4a86.jpg

133327.1c4a86.jpg

497 ms

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102458.50f13f.jpg

418 ms

855722.7c0ce4.jpg

855722.7c0ce4.jpg

557 ms

855286.c20cf2.jpg

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418 ms

857775.33cce0.jpg

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522 ms

845023.951f59.jpg

845023.951f59.jpg

568 ms

103322.5e6f4c.jpg

103322.5e6f4c.jpg

565 ms

103321.39a510.jpg

103321.39a510.jpg

659 ms

sample_set_country.png

sample_set_country.png

647 ms

sample_set_country.png

sample_set_country.png

694 ms

14490.js

14490.js

6 ms

sync

sync

20 ms

ads_premium.js

ads_premium.js

180 ms

388148-1.js

388148-1.js

168 ms

adcomp_pc.js

adcomp_pc.js

180 ms

sspcore_spot.js

sspcore_spot.js

181 ms

loading.gif

loading.gif

365 ms

carousel.png

carousel.png

374 ms

859087.f689cc.jpg

859087.f689cc.jpg

382 ms

857854.85ac9a.jpg

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435 ms

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483 ms

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502 ms

854038.964aad.jpg

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547 ms

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547 ms

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558 ms

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583 ms

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664 ms

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664 ms

btn_action.png

btn_action.png

656 ms

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662 ms

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688 ms

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687 ms

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794 ms

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830 ms

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986 ms

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864 ms

855662.9d8598.jpg

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949 ms

imp

imp

310 ms

ssp_spot.ashx

ssp_spot.ashx

482 ms

imp

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185 ms

a1039247.js

a1039247.js

457 ms

jstag

jstag

69 ms

sync

sync

10 ms

adcore.js

adcore.js

3 ms

adcore_pc.js

adcore_pc.js

14 ms

adcore_pc_inline.js

adcore_pc_inline.js

9 ms

acj

acj

31 ms

ad_spot.aspx

ad_spot.aspx

547 ms

pd

pd

56 ms

ssp_spot.ashx

ssp_spot.ashx

147 ms

ri

ri

26 ms

3690a2b4-b724-e27c-018d-46702a93a3d8

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41 ms

pixel

pixel

43 ms

sd

sd

24 ms

pixel

pixel

17 ms

sd

sd

29 ms

sd

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46 ms

ad_spot.aspx

ad_spot.aspx

358 ms

emily.html

emily.html

38 ms

sd

sd

26 ms

jsk

jsk

341 ms

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bdc26b5fd8027e48480e15927ace4136.gif

494 ms

b

b

324 ms

gl0

gl0

200 ms

opt_icon.png

opt_icon.png

682 ms

opt_icon_text.png

opt_icon_text.png

756 ms

style.css

style.css

196 ms

ad_creative.ashx

ad_creative.ashx

750 ms

style.css

style.css

192 ms

ad_creative.ashx

ad_creative.ashx

196 ms

sd

sd

24 ms

RestoreXidToMediaStorage.html

RestoreXidToMediaStorage.html

7 ms

acs

acs

167 ms

Accessibility Review

live2.nicovideo.jp accessibility score

66

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

[role]s are not contained by their required parent element

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

live2.nicovideo.jp best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

High

Page has valid source maps

SEO Factors

live2.nicovideo.jp SEO score

77

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Live2.nicovideo.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it does not match the claimed English language. Our system also found out that Live2.nicovideo.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

live2.nicovideo.jp

Open Graph description is not detected on the main page of Live 2 Nicovideo. 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: