Sentinel: Your Web-Performance Watchman

Video: Breaking Good Habits—Front-Trends, 2012

Written by on CSS Wizardry.

Table of Contents

Here is the video from my talk Breaking Good Habits which I gave in April of this year at Front-Trends in Warsaw, Poland. My voice sounds unusually deep and you can see my boxer shorts for the first 25 minutes but it seems okay; I was absolutely terrified but I’m pleased my nerves didn’t show through too much!

On Vimeo:

My Front-Trends writeup.

Did this help? We can do way more!

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.

You can now find me on Mastodon.

Suffering? Fix It Fast!


  • inuitcss
  • ITCSS – coming soon…
  • CSS Guidelines

Next Appearance

  • Talk & Workshop

    WebExpo: Prague (Czech Republic), May 2024


I am available for hire to consult, advise, and develop with passionate product teams across the globe.

I specialise in large, product-based projects where performance, scalability, and maintainability are paramount.