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Tag: JavaScript

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Third-party snippets, async loading, and the true cost of the main thread. Shipping less JavaScript, and shipping it at a better time.

2025


  1. Build for the Web, Build on the Web, Build with the Web

2023


  1. Why Not document.write()?

2022


  1. Speeding Up Async Snippets

2018


  1. What If?

  2. Identifying, Auditing, and Discussing Third Parties

2011


  1. jQuery placeholder plugin/polyfill

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Hi there, I’m Harry Roberts. I am an award-winning Consultant Web Performance Engineer, designer, developer, writer, and speaker from the UK. I write, Tweet, speak, and share code about measuring and improving site-speed. You should hire me.

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I help teams achieve class-leading web performance, providing consultancy, guidance, and hands-on expertise.

I specialise in tackling complex, large-scale projects where speed, scalability, and reliability are critical to success.

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