Nikon.co.jp Site Title
Nikon
Nikon.co.jp Meta Description
株式会社ニコンのウェブサイト。ニコンは「信頼と創造」の企業理念のもと、イノベーティブな製品やサービスを提供し、人々の豊かな未来に貢献していきます。
Nikon.co.jp Test Results
nikon.co.jp Mobile Usability: 100/100
nikon.co.jp Mobile Speed: 50/100
Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
https://www.nikon.co.jp/assets/js/common.js
Optimize CSS Delivery of the following:
https://www.nikon.co.jp/assets/css/common.css
...
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 374.6KiB (41% reduction).
Compressing https://www.nikon.co.jp/img/index/pic_menu_meeting2018.jpg could save 68.4KiB (52% 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:
https://www.nikon.co.jp/img/index/pic_hero_npc.jpg (expiration not specified)
...
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 51% of the final above-the-fold content could be rendered with the full HTML response.
...
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 76.9KiB (67% reduction).
Minifying https://www.nikon.co.jp/assets/css/common.css could save 76.7KiB (68% reduction) after compression.
...
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 23.7KiB (28% reduction).
Minifying https://www.nikon.co.jp/assets/js/common.js could save 23.7KiB (28% reduction) after compression.
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 7.2KiB (60% reduction).
Compressing https://www.nikon.co.jp/assets/img/logo.svg could save 4.9KiB (67% reduction).
...
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