Edtechzine.jp Site Title

EdTechZine(エドテックジン)

Edtechzine.jp Meta Description

翔泳社が運営する教育ICT(EdTech、エドテック)の専門メディアです。EdTechZineでは、テクノロジーを活用して「教育」や「学習」をアップデートしたいと考える皆さまに向けて、最新情報を多角的な視点で毎日お届けします。

Edtechzine.jp Test Results

edtechzine.jp Mobile Usability: 100/100


edtechzine.jp Mobile Speed: 25/100

Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 11 blocking script resources and 8 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://et-cdn.shoeisha.jp/lib/js/jquery.min.js
...
Optimize CSS Delivery of the following:
https://et-cdn.shoeisha.jp/lib/css/bootstrap_jquery.css
...
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 732.6KiB (68% reduction).
Compressing https://et-cdn.shoeisha.jp/static/images/article/1961/1961_th.jpg could save 128.2KiB (77% 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://d1au00fuy17a7c.cloudfront.net/et/etz1807_th.jpg (expiration not specified)
...
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 302.7KiB (74% reduction).
Compressing https://et-cdn.shoeisha.jp/lib/js/jquery.min.js could save 58.6KiB (64% 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 38.4KiB (23% reduction).
Minifying https://et-cdn.shoeisha.jp/lib/css/cmn.css could save 15.5KiB (23% reduction).
...
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 27KiB (35% reduction).
Minifying https://et-cdn.shoeisha.jp/lib/js/bootstrap_jquery.js could save 18.4KiB (35% reduction).
...

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