Past Meetup

CSS Preprocessors (SASS/LESS) with Jonathan Verrecchia

This Meetup is past

378 people went

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About the Talk

During this talk, Jonathan Verrecchia (@verekia) will demonstrate the power of CSS preprocessors and explain why he believes these are a game changer for front-end development.

CSS preprocessors are used to enhance CSS with amazing new features (variables, functions, file concatenation and minification, color operations, etc.) and can dramatically improve your development workflow. Jonathan will shed light on some very common misconceptions about them and will help you understand how choose between SASS, LESS and Stylus for your next project.

The talk will cover the basics of CSS preprocessors but also more advanced techniques with concrete use cases. If you haven’t dived into CSS preprocessors yet, if you’re still skeptical, or if you want one more proof that they’re the way to go now, this talk is for you!

About the Speaker

Jonathan Verrecchia is a Front-End Engineer at Yelp in San Francisco. Originally from Paris, he wrote a French book about HTML5 ( and created Initializr (, a tool to help web developers get started quickly with new projects. This made him part of the HTML5 Boilerplate team, as Initializr became the official tool for customizing H5BP.

Jonathan enjoys teaching and blogging about HTML, CSS, JavaScript and Web Design, and always tries to make it simple and understandable for all. You can read more about what he does on ( and follow @verekia on Twitter.


6:30-7p Meet, mingle, and munch

7-7:10p Welcome Notes, Sponsors, and Introduction

7:10+ Jonathan's Talk

8:15-30 Q&A and Prize Giveaways*

8:30p Lightning Talks** (2 mins each)

* You must be at the venue to qualify for prizes. Tip: Tweeting #sfhtml5 and checking in may increase your chances of winning a prize.

** If you are interested in doing a lightning talk, send the organizers your proposal.

This event will be recorded and live streamed. The live streaming link will be posted the day of the event here and on Twitter (@sfhtml5).