Alc.co.jp 英語学習・TOEIC対策・英辞郎 on the WEB | アルク
英語・子供英語・日本語の通信講座や学習書、オンラインサービスを提供するアルクのウェブサイト。あなたのレベルや目的に合った語学学習教材がきっと見つかります。英辞郎 on the WEBやTOEICなどの無料コンテンツも充実。

User Loading Experience
First Contentful Paint
Largest Contentful Paint
Cumulative Layout Shift
First Input Delay
Metrics
Time to Interactive0/100 27.8 s
Largest Contentful Paint0/100 13.1 s
Speed Index1/100 15.8 s
Total Blocking Time4/100 1,670 ms
Cumulative Layout Shift12/100 0.583
First Contentful Paint49/100 4.1 s
Should Fix (22)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Passed Audits (8)

Should Fix (6)
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. Learn more.
Passed Audits (7)

Should Fix (6)
General
Trust and Safety
User Experience
Browser Compatibility
Passed Audits (8)

Should Fix (10)
Installable
PWA Optimized
Fast and reliable
Passed Audits (4)

Should Fix (5)
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Contrast
These are opportunities to improve the legibility of your content.
Passed Audits (10)

Should Fix (1)
Passed Audits (4)

Should Fix (7)
Passed Audits (3)
www.alc.net
www.alc.org
www.alc.info
www.alc.biz
www.alc.us
www.alc.mobi
www.lc.co.jp
www.alc.co.jp
www.qlc.co.jp
www.aqlc.co.jp
www.qalc.co.jp
www.wlc.co.jp
www.awlc.co.jp
www.walc.co.jp
www.slc.co.jp
www.aslc.co.jp
www.salc.co.jp
www.zlc.co.jp
www.azlc.co.jp
www.zalc.co.jp
www.ac.co.jp
www.apc.co.jp
www.alpc.co.jp
www.aplc.co.jp
www.aoc.co.jp
www.aloc.co.jp
www.aolc.co.jp
www.akc.co.jp
www.alkc.co.jp
www.aklc.co.jp
www.al.co.jp
www.alx.co.jp
www.alcx.co.jp
www.alxc.co.jp
www.ald.co.jp
www.alcd.co.jp
www.aldc.co.jp
www.alf.co.jp
www.alcf.co.jp
www.alfc.co.jp
www.alv.co.jp
www.alcv.co.jp
www.alvc.co.jp