General release tickets will go live on Tuesday March 1 at 1pm

“Chrome DevTools, Inside Out" - by Katie Fenn @katie_fenn

Chrome DevTools: a suite of tools to debug and profile the performance of your site. They're bundled with every copy of Chrome, and you have every reason to learn what they're capable of.

Starting with the basics of inspecting HTML and CSS, we will then tour debugging scripts line-by-line and profiling performance. We'll also find out the features that help you automate work and save time. If you've always wanted to know how to debug CSS and Javascript, this talk will help you demystify your code and not make things worse by guessing.

About Katie

Katie Fenn is a software engineer with ten years of experience working with JS, CSS and PHP. She is usually up far too late working on open source projects or playing videogames, and up far too early watching motorsport.

"Using WebPageTest" - by Andy Davies @AndyDavies

In this talk Andy will give you a whirlwind tour of some of the things you can do with WebPageTest, from generating waterfalls and videos for single page loads through to testing using the API.

To help you get a better understanding, he'll explain how WebPageTest works and demonstrate some of the ways he uses it to help people get a better understanding of their site performance.

About Andy

Andy is a Web Performance Advocate at NCC Group where he helps clients to understand and improve the performance of their sites. He’s author of "The Pocket Guide to Web Performance" published by Five Simple Steps, and co-author of "Using WebPageTest" from O'Reilly.

Our Venue

ThoughtWorks London
78 Wardour Street
London W1F

Nearest tube station: Piccadilly Circus/Leicester Square

Help us find a permanent venue

We are still looking for a permanent venue for 100 plus attendees. Get in touch if you know anybody who can help us with that.


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