Dotinstall.com Site Title
ドットインストール - 3分動画でマスターできるプログラミング学習サービス
Dotinstall.com Meta Description
3分動画で初心者や独学の方でも無理なく勉強が続くプログラミング学習サービスです。Web制作の基礎から子供向けのゲーム制作レッスン、さらにシステム開発に使われるPHP、Ruby、Pythonなどの入門レッスンまで幅広く言語を体験できます。
Dotinstall.com Test Results
dotinstall.com Mobile Usability: 100/100
dotinstall.com Mobile Speed: 70/100
Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 5 blocking script resources and 7 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://dotinstall.com/js/jquery-1.10.2.min.js
...
Optimize CSS Delivery of the following:
https://dotinstall.com/css/cf.css?v=20191011
...
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://dotinstall.com/css/bootstrap_328.css (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 5.2KiB (16% reduction).
Minifying https://dotinstall.com/css/cf.css?v=20191011 could save 2.6KiB (20% reduction) after compression.
...
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 4.8KiB (71% reduction).
Compressing https://dotinstall.com/img/mobile_login.png could save 2.7KiB (81% 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 1.9KiB (18% reduction).
Minifying https://dotinstall.com/js/main.js?v=20191014 could save 1.9KiB (18% reduction) after compression.
Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 379B (12% reduction).
Minifying https://dotinstall.com/ could save 379B (12% reduction) after compression.
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