nicovideo.jp niconico

Mobile Usability

100/100

Good

Mobile Speed

51/100

Bad

Last tested: 2017-08-27

Rescan
nicovideo.jp Mobile Speed: 51/100
nicovideo.jp Mobile Speed Test Quick Overview

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 10 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.
http://sp.res.nimg.jp/js/jquery-1.9.1.min.js
http://sp.res.nimg.jp/js/nicoapi.js?747e620179aac500bd33d22d030d1bac
http://sp.res.nimg.jp/js/common.js?a1e6006aa2ff53ecfa47f237af6a755a
http://sp.res.nimg.jp/js/jquery.showMenu.js?20170420
http://ads.nicovideo.jp/assets/js/adsSimple-1.3.0.min.js
http://sp.res.nimg.jp/js/lib/react-with-addons-15.4.2.min.js
http://sp.res.nimg.jp/js/lib/react-dom-15.4.2.min.js
http://sp.res.nimg.jp/js/ads/middle_banner.js?20170223
http://sp.res.nimg.jp/js/lib/mustache.min.js
http://cdn.optimizely.com/js/1252970284.js
Optimize CSS Delivery of the following:
http://sp.res.nimg.jp/css/reset.css?aa2f45e363fce97db5956a68bc2e5173
http://sp.res.nimg.jp/css/common.css?c1f1d63b154af6fe138a95ce8fca2af5
http://sp.res.nimg.jp/css/site_header.css?cc1ec56486077b82ba220caeac1ead5c
http://sp.res.nimg.jp/css/sheet.css
http://sp.res.nimg.jp/assets/css/search.css
http://sp.res.nimg.jp/css/personal_frame.css?7a84a…70daa535eb2b882d7365e9
Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://nicovideo.jp/
http://www.nicovideo.jp/
http://sp.nicovideo.jp/
Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 180.2KiB (68% reduction).
Compressing http://spad.i-mobile.co.jp/script/adssp.js?20110215 could save 91.6KiB (67% reduction).
Compressing http://js.ptengine.jp/22c266ff.js could save 33KiB (66% reduction).
Compressing http://sp.nicovideo.jp/ could save 31.7KiB (77% reduction).
Compressing http://ssp-bidder.i-mobile.co.jp/script/sspcore_spot.js?20130501 could save 15.6KiB (67% reduction).
Compressing http://ads.nicovideo.jp/assets/js/adsSimple-1.3.0.min.js could save 3.4KiB (62% reduction).
Compressing http://spad.i-mobile.co.jp/script/adcore_sp_inline-0.2.js?20110201 could save 2.4KiB (63% reduction).
Compressing http://notification.nicovideo.jp/res/notify.js could save 1.2KiB (53% reduction).
Compressing http://xid.i-mobile.co.jp/RestoreXidToMediaStorage.html could save 789B (59% reduction).
Compressing http://js.ptengine.jp/pta.js could save 680B (57% reduction).
Optimize images

Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 132.2KiB (43% reduction).
Compressing https://secure-assets.rubiconproject.com/static/psa/casala_clk/15.png could save 22.2KiB (74% reduction).
Compressing http://icon.nimg.jp/channel/ch2630593.jpg?1493695834 could save 12.7KiB (69% reduction).
Compressing http://icon.nimg.jp/community/358/co3587728.jpg?1493855314 could save 10.7KiB (65% reduction).
Compressing http://spcdnsp.i-mobile.co.jp/ad_creative.ashx?advid=3783091&eid=3 could save 10.6KiB (27% reduction).
Compressing http://icon.nimg.jp/channel/ch2623548.jpg?1493280200 could save 10.5KiB (68% reduction).
Compressing http://sp.res.nimg.jp/img/uploader/pickupselection/zenbuore170508.jpg could save 8.8KiB (39% reduction).
Compressing http://nicolive.cdn.nimg.jp/live/simg/img/a389/1166659.c09fc8.jpg could save 7.4KiB (35% reduction).
Compressing http://sp.res.nimg.jp/img/uploader/pickupselection/monday170508sp.jpg could save 7KiB (38% reduction).
Compressing http://icon.nimg.jp/channel/ch2630748.jpg?1493280622 could save 6.9KiB (60% reduction).
Compressing http://icon.nimg.jp/community/327/co3272236.jpg?1465631494 could save 6.4KiB (65% reduction).
Compressing http://sp.res.nimg.jp/img/uploader/pickupselection/0508_1_m.jpg could save 3.8KiB (33% reduction).
Compressing http://nicolive.cdn.nimg.jp/live/simg/img/a391/1172191.23f239.jpg could save 3.6KiB (33% reduction).
Compressing http://tn-skr4.smilevideo.jp/smile?i=30413239 could save 3.2KiB (41% reduction).
Compressing http://sp.res.nimg.jp/img/common/snsbtn_twitter.png could save 1.8KiB (23% reduction).
Compressing http://sp.res.nimg.jp/img/common/snsbtn_facebook.png could save 1.7KiB (23% reduction).
Compressing http://sp.res.nimg.jp/img/site_header/hd_logo.png could save 1.7KiB (35% reduction).
Compressing http://uni.res.nimg.jp/img/system/today/2017/05/07/20170507194632_0ba34.JPG could save 1.6KiB (13% reduction).
Compressing http://sp.res.nimg.jp/img/site_header/hd_search.png could save 1.2KiB (56% reduction).
Compressing http://sp.res.nimg.jp/img/site_header/hd_menu.png could save 1.2KiB (52% reduction).
Compressing http://ads.nicovideo.jp/assets/images/e6/e6f55b9eb…75226b6526a7918ac2.png could save 1.1KiB (33% reduction).
Compressing http://sp.res.nimg.jp/img/common/logo_jasrac.png could save 960B (17% reduction).
Compressing http://sp.res.nimg.jp/img/index/icon_4.png could save 890B (86% reduction).
Compressing http://sp.res.nimg.jp/img/index/icon_3.png could save 889B (75% reduction).
Compressing http://sp.res.nimg.jp/img/index/icon_2.png could save 888B (72% reduction).
Compressing http://tn-skr3.smilevideo.jp/smile?i=31166938 could save 872B (13% reduction).
Compressing http://sp.res.nimg.jp/img/index/icon_1.png could save 871B (66% reduction).
Compressing http://tn-skr4.smilevideo.jp/smile?i=23178899 could save 713B (12% reduction).
Compressing http://sp.res.nimg.jp/img/category/g_other.png could save 619B (42% reduction).
Compressing http://tn-skr2.smilevideo.jp/smile?i=29452317 could save 585B (13% reduction).
Compressing http://tn-skr2.smilevideo.jp/smile?i=31165093 could save 585B (17% reduction).
Compressing http://p.news.nimg.jp/photo/942/2433942t.jpg could save 516B (19% reduction).
Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
http://ads.nicovideo.jp/assets/js/adsSimple-1.3.0.min.js (expiration not specified)
http://afs.adjust-net.jp/adserver/sp/ads.js (expiration not specified)
https://secure-assets.rubiconproject.com/static/psa/casala_clk/15.png (expiration not specified)
http://cdn.optimizely.com/js/1252970284.js (2.1 minutes)
https://js1.nend.net/js/nendAdLoader.js (2.6 minutes)
http://p.news.nimg.jp/photo/942/2433942t.jpg (3 minutes)
http://embed.enquete.nicovideo.jp/static/js/enquete.js (10 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-KXT…gleTagManagerDataLayer (15 minutes)
http://uni.res.nimg.jp/img/system/today/2017/05/07/20170507194632_0ba34.JPG (20 minutes)
http://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_398382_15 (60 minutes)
http://jpmarket-d.openx.net/mw/1.0/jstag (60 minutes)
http://js.ptengine.jp/22c266ff.js (60 minutes)
http://js.ptengine.jp/pta.js (60 minutes)
http://js.ptengine.jp/pts.js (60 minutes)
https://www.google-analytics.com/plugins/ua/linkid.js (60 minutes)
http://ads.rubiconproject.com/ad/11582.js (112.7 minutes)
http://www.google-analytics.com/analytics.js (2 hours)
https://www.google-analytics.com/analytics.js (2 hours)
http://nicolive.cdn.nimg.jp/live/simg/img/a391/1172191.23f239.jpg (8.7 hours)
Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 6.7KiB (17% reduction).
Minifying http://sp.nicovideo.jp/ could save 6.7KiB (17% reduction).
Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 3.8KiB (22% reduction).
Minifying http://sp.res.nimg.jp/css/common.css?c1f1d63b154af6fe138a95ce8fca2af5 could save 2.1KiB (19% reduction) after compression.
Minifying http://sp.res.nimg.jp/assets/css/search.css could save 974B (30% reduction) after compression.
Minifying http://sp.res.nimg.jp/css/site_header.css?cc1ec56486077b82ba220caeac1ead5c could save 785B (26% reduction) after compression.

nicovideo.jp Mobile Resources


Total Resources143
Number of Hosts47
Static Resources79
JavaScript Resources42
CSS Resources6

nicovideo.jp Mobile Resource Breakdown