jr-central.co.jp JR東海 Central Japan Railway Company

Mobile Usability

89/100

Good

Mobile Speed

2/100

Bad

Last tested: 2017-09-13

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jr-central.co.jp Mobile Usability: 89/100
jr-central.co.jp Mobile Usability Test Quick Overview

Configure the viewport

Your page specifies a fixed-width desktop viewport. Use a responsive viewport to allow your page to render properly on all devices.
jr-central.co.jp Mobile Speed: 2/100
jr-central.co.jp Mobile Speed Test Quick Overview

Optimize images

Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 5MiB (70% reduction).
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Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.
http://jr-central.co.jp/_assets/_config/config.js
Optimize CSS Delivery of the following:
http://jr-central.co.jp/_assets/_css/reset.css
http://fonts.googleapis.com/earlyaccess/notosansjp.css
http://jr-central.co.jp/_assets/_css/sp/standard.css?v=1505289120456
http://jr-central.co.jp/_css/sp/standard.css?v=1505289120456
http://cache.dga.jp/s/jrcentral/ac.css
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://jr-central.co.jp/_assets/_config/config.js (expiration not specified)
http://jr-central.co.jp/_assets/_css/reset.css (expiration not specified)
http://jr-central.co.jp/_assets/_img/_des_che.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_des_rad.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_foo_rol_ico.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_bp_01_sea_ft_ico.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_bp_01_sea_mor_ico_01.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_bp_01_sea_tab_ico_01.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_bp_01_sea_tab_ico_02b.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_lan_cap_ico.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_log.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_sea_but_ico.svg (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_tab_ico_01.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_tab_ico_01.svg (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_tab_ico_02.svg (expiration not specified)
http://jr-central.co.jp/_assets/_img/_hea_tab_ico_03.svg (expiration not specified)
http://jr-central.co.jp/_assets/_img/_ico_blank.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_ser_sta_dis_ico_01.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/_ser_tab_ico_01.png (expiration not specified)
http://jr-central.co.jp/_assets/_img/ico_ex.svg (expiration not specified)
http://jr-central.co.jp/_assets/_img/ico_logo_02.svg (expiration not specified)
http://jr-central.co.jp/_assets/_img/ico_news.svg (expiration not specified)
http://jr-central.co.jp/_assets/_img/ico_railway.svg (expiration not specified)
http://jr-central.co.jp/_assets/_img/ico_shinkansen.svg (expiration not specified)
http://jr-central.co.jp/_assets/_img/ico_zairaisen.svg (expiration not specified)
http://jr-central.co.jp/_assets/_javascript/vendor/lib.js (expiration not specified)
http://jr-central.co.jp/_data/_img/ban_001.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/ban_002.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/ban_004.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/ban_005.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/ban_007.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/ban_008.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/pc/main_vis_001.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/pc/main_vis_002.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/pc/main_vis_003.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/pc/main_vis_004.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/pc/main_vis_005.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/pc/main_vis_006.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/pc/main_vis_007.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/pc/main_vis_008.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/pc/main_vis_009.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/pc/main_vis_010.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/sp/main_vis_001.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/sp/main_vis_002.jpg (expiration not specified)
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http://jr-central.co.jp/_data/_img/sp/main_vis_006.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/sp/main_vis_007.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/sp/main_vis_008.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/sp/main_vis_009.jpg (expiration not specified)
http://jr-central.co.jp/_data/_img/sp/main_vis_010.jpg (expiration not specified)
http://jr-central.co.jp/_img/ind_ex_bg.png (expiration not specified)
http://jr-central.co.jp/_img/ind_ex_ico_01.png (expiration not specified)
http://jr-central.co.jp/_img/ind_ex_ico_02.png (expiration not specified)
http://jr-central.co.jp/_img/ind_ex_log_express.svg (expiration not specified)
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http://jr-central.co.jp/_img/ind_ex_log_smart.svg (expiration not specified)
http://jr-central.co.jp/_img/ind_mln_img_01.jpg (expiration not specified)
http://jr-central.co.jp/_img/ind_mln_img_02.jpg (expiration not specified)
http://jr-central.co.jp/_img/ind_mln_img_03.jpg (expiration not specified)
https://www.googletagmanager.com/gtm.js?id=GTM-MQNJVM (15 minutes)
http://cache.dga.jp/s/jrcentral/ac.css (30 minutes)
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http://cache.dga.jp/s/jrcentral/search_tool_n1.js (30 minutes)
http://www.google-analytics.com/plugins/ua/linkid.js (60 minutes)
http://www.google-analytics.com/analytics.js (2 hours)
Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 2% of the final above-the-fold content could be rendered with the full HTML response.
Reduce server response time

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 18.3KiB (58% reduction).
Compressing http://jr-central.co.jp/_assets/_img/ico_logo_02.svg could save 2.9KiB (56% reduction).
Compressing http://jr-central.co.jp/_data/main_vis.json could save 2.3KiB (76% reduction).
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Compressing http://jr-central.co.jp/_assets/_img/ico_railway.svg could save 1.6KiB (55% reduction).
Compressing http://jr-central.co.jp/_data/banner.json could save 1.4KiB (77% reduction).
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Compressing http://jr-central.co.jp/_img/ind_ex_log_express.svg could save 769B (47% reduction).
Compressing http://jr-central.co.jp/_img/ind_ex_log_express_w.svg could save 767B (47% reduction).
Compressing http://jr-central.co.jp/_assets/_img/ico_zairaisen.svg could save 747B (52% reduction).
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Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 11.5KiB (32% reduction).
Minifying http://jr-central.co.jp/_assets/_javascript/common.js?_=1505289120453 could save 4.5KiB (33% reduction) after compression.
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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 2.6KiB (15% reduction).
Minifying http://jr-central.co.jp/_assets/_css/sp/standard.css?v=1505289120456 could save 2.6KiB (15% reduction) after compression.

jr-central.co.jp Mobile Resources


Total Resources89
Number of Hosts6
Static Resources68
JavaScript Resources15
CSS Resources5

jr-central.co.jp Mobile Resource Breakdown