The top four web performance challenges

  • time to first byte,
  • time to first render,
  • time to first meaningful paint, or
  • time to first meaningful interaction.
  • overall file size,
  • number of requests, or
  • pagespeed insights score.

4. Web fonts

3. Images

2. Our JavaScript

1. Other people’s JavaScript

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A web developer and author living and working in Brighton, England. Everything I post on Medium is a copy — the originals are on my own website, adactio.com

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Jeremy Keith

Jeremy Keith

A web developer and author living and working in Brighton, England. Everything I post on Medium is a copy — the originals are on my own website, adactio.com

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