Sentinel: Your Web-Performance Watchman

Canvas Conf, 2012

Written by on CSS Wizardry.

Table of Contents
  1. Slides

N.B. If you are attending The Digital Barn later this month then please don’t look at the slides!

I’ve just returned from my third conference appearance at Canvas Conf, a small, independent conference in Birmingham, the heart of the UK. The event was incredible; a variety of very talented speakers with very interesting talks.

My talk, Big CSS, dealt with managing CSS on long running, large projects with lots of developers and lots of style[sheet]s.


My slides can be found over on Speaker Deck. There was no recording at the event but the slides should be fairly self-explanatory.

I’d like to thank the guys for inviting me to speak, the conference was a great success, a very feel-good day and a lot of fun. I’d also like to thank the audience, who were great, and everyone who offered kind words after my talk; I still get incredibly nervous. Cheers!

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.