Yamakawa.co.jp Site Title
歴史と教科書の山川出版社
Yamakawa.co.jp Meta Description
定評ある山川の歴史書。「歴史書、教科書、学習参考書の山川」として高等学校の日本史・世界史・公民の教科書、学習参考書を始めとし、さまざまな歴史刊行物を出版しています。
Yamakawa.co.jp Test Results
yamakawa.co.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="#top">トップに戻る</a>
is close to 1 other tap targets.
yamakawa.co.jp Mobile Speed: 23/100
Quick overview:
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Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 2.1MiB (58% reduction).
Compressing https://www.yamakawa.co.jp/images/header_4.jpg could save 338.8KiB (79% reduction).
...
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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.yamakawa.co.jp//images/banner_brain_tra@2x.jpg (expiration not specified)
...
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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://yamakawa.co.jp/
...
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Your page has 1 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.
Optimize CSS Delivery of the following:
https://www.yamakawa.co.jp/css/style.css
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Minify CSS for the following resources to reduce their size by 5.5KiB (18% reduction).
Minifying https://www.yamakawa.co.jp/css/style.css could save 2.4KiB (17% reduction) after compression.
...
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Minify JavaScript for the following resources to reduce their size by 1,001B (25% reduction).
Minifying https://www.yamakawa.co.jp/js/standard/standard.js could save 451B (26% reduction) after compression.
...
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Enable compression for the following resources to reduce their transfer size by 548B (61% reduction).
Compressing https://www.yamakawa.co.jp/js/modules/localstorage.js could save 548B (61% reduction).
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