Harry is an independent Consultant Web Performance Engineer from the UK. He helps some of the world’s largest and most respected organisations find and fix their site-speed issues.
He is both a Google- and a Cloudinary Media-Developer Expert, and has consulted for clients from the United Nations to the BBC, General Electric to the Financial Times, and a whole host more. He is also co-chair of performance.now(), the web performance conference for professionals.
When not doing client work, he writes, teaches, and speaks about the entire gamut of front-end performance. When not doing work at all, he’s probably out on his bike.
TECHNOLOGY
Past Presentations
How to Think Like a Performance Engineer
15:40 - 16:10, 27th of May (Tuesday) 2025/ DEV TRENDS STAGE
My website is slow—where do I start?!
14:30 - 15:00, 24th of May (Wednesday) 2023/ DEVTRENDS STAGE
Optimising Largest Contentful Paint
15:30 - 16:00, 6th of October (Thursday) 2022/ DEVTRENDS STAGE
Get Your Head Straight
10:20 - 10:50, 14th of October (Thursday) 2021/ DEVTRENDS STAGE
From Milliseconds to Millions: A Look at the Numbers Powering Web Performance
13:10 - 13:55, 29th of September (Tuesday) 2020/ FRONT-END STAGE
More Than You Ever Wanted to Know About Resource Hints
15:10 - 15:40, 9th of May (Thursday) 2019/ DevTrends
Front-End Performance: Building Faster Websites
09:30 - 17:30, 7th of May (Tuesday) 2019/ WORKSHOP 2
Amber Expo
Trade Secrets – Little-Known Performance Tools (and How to Use ’Em)
13:30 - 17:00, 23rd of May (Wednesday) 2018/ WORKSHOP STAGE #3
It’s My (Third) Party and I’ll Cry If I Want To
16:10 - 16:50, 22nd of May (Tuesday) 2018/ TECH STAGE
Why Fast Matters
09:45 - 10:30, 17th of May (Wednesday) 2017/ TECH STAGE