Bookwalker.jp Site Title

出版社直営の電子書籍ストア-BOOK☆WALKER

Bookwalker.jp Meta Description

電子書籍ならBOOK☆WALKER(ブックウォーカー)ストア。人気のライトノベル、マンガ、新書、実用書、写真集、雑誌など幅広く配信中。Android、iPhoneアプリ、PC対応!

Bookwalker.jp Test Results

Bookwalker.jp Mobile Usability: 99/100

Quick overview:
Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target <a href="/st1/" class="bl-bigger"></a> and 2 others are close to other tap targets.
...

Bookwalker.jp Mobile Speed: 44/100

Quick overview:
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 847.3KiB (41% reduction).
Losslessly compressing https://c.bookwalker.jp/thumbnailImage_2072729.jpg could save 64KiB (60% reduction).
...
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 8 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js
...
Optimize CSS Delivery of the following:
https://c.bookwalker.jp/v/louis/sp/css/19/index.css
...
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 43% of the final above-the-fold content could be rendered with the full HTML response.
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://b92.yahoo.co.jp/js/s_retargeting.js (expiration not specified)
...
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 3.7KiB (24% reduction).
Minifying https://c.bookwalker.jp/v/louis/sp/css/19/index.css could save 1.4KiB (21% 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 2.2KiB (34% reduction).
Minifying https://c.bookwalker.jp/v/louis/pc/js/1/jquery.lazyload.js could save 917B (46% 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 1.3KiB (57% reduction).
Compressing https://v6.advg.jp/adpv6/pv.js/7qM could save 1.3KiB (57% reduction).

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