Nicole Sullivan

Nicole Sullivan
  • @stubbornella
  • Github: stubbornella
  • Facebook: stubbornella
  • LinkedIn: nicolesullivan
  • Google+

Nicole is a front-end performance consultant, CSS aficionado, and author. She started the Object-Oriented CSS open source project, which answers the question: how do you scale CSS for millions of visitors or thousands of pages?

She has also consulted with many companies including Facebook, Salesforce, the W3C, Adobe, Paypal, and Box. She is the co-creator of, an image optimization service in the cloud, and CSS Lint (, a tool that helps correct common CSS errors before they are pushed to production. She is passionate about CSS, web standards, and scalable front-end architecture for large commercial websites.

Nicole co-authored The Web Performance Daybook, Vol 2 and Even Faster Websites and blogs at She speaks at conferences including JSConf, Velocity Conference, Web Directions, CSS Summit, An Event Apart, Webstock,, SXSW, and Fronteers.