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プログラミング学ぶなら、オンラインレッスンNo.1 | CodeCamp(コードキャンプ) Meta Description

受講20,000人突破。プログラミング初心者でも、現役エンジニアの個別指導で効率よく確実に習得できる。毎日24時まで受講可能。無料体験レッスン実施中!プログラミングを学ぶなら、オンライン個別指導No.1のプログラミングレッスンCodeCamp Test Results Mobile Usability: 100/100 Mobile Speed: 60/100

Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 blocking script resources and 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:
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: (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 9.4KiB (65% reduction).
Compressing could save 3.6KiB (67% reduction).
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 5.4KiB (16% reduction).
Compressing could save 5.4KiB (16% 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 1.8KiB (15% reduction).
Minifying could save 702B (14% 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 499B (15% reduction).
Minifying could save 499B (15% reduction) after compression.

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