O’Reilly Velocity Conference – Santa Clara Giveaway!
O'Reilly Velocity Conference in Santa Clara is right around the bend: June 20-23, 2016. Velocity is boasting an awesome lineup of speakers covering several different topics. Learn to build websites, apps, and services that are fast, scalable, resilient, and highly available!

Velocity is my favorite of the O'Reilly Conference series because speed optimization is fun, creative, and has huge payoff for users on desktop and mobile devices!
Bronze Pass Giveaway
My friends at O'Reilly are letting me give away one free Bronze Pass to Velocity Santa Clara. Want to win? In the comment section below, share your favorite performance tip. Bonus points for code samples!
20% Off Discount
If you want to sign up today, you click here and use code PC20DWALSH
!
![Responsive Images: The Ultimate Guide]()
Chances are that any Web designers using our Ghostlab browser testing app, which allows seamless testing across all devices simultaneously, will have worked with responsive design in some shape or form. And as today's websites and devices become ever more varied, a plethora of responsive images...
![Vibration API]()
Many of the new APIs provided to us by browser vendors are more targeted toward the mobile user than the desktop user. One of those simple APIs the Vibration API. The Vibration API allows developers to direct the device, using JavaScript, to vibrate in...
![Font Replacement Using Cufón]()
We all know about the big font replacement methods. sIFR's big. Image font replacement has gained some steam. Not too many people know about a great project named Cufón though. Cufón uses a unique blend of a proprietary font generator tool...
![Table Cell and Position Absolute]()
If you follow me on Twitter, you saw me rage about trying to make position: absolute
work within a TD
element or display: table-cell
element. Chrome? Check. Internet Explorer? Check. Firefox? Ugh, FML. I tinkered in the console...and cussed. I did some researched...and I...
Send Link preload headers for your CSS, JS, Fonts, and other assets so that the browser can get a head start on loading them. Bonus: If you use CloudFlare, or another CDN that supports it, the assets will be pushed via HTTP2 Server Push.
Sample .htaccess code from my blog: https://gist.github.com/adamzr/0c4e14999263aa4854b91f9245e16de8