Throughout the course, you’ll build a performance toolbox to help you build faster website experiences by taking advantage of PageSpeed Insights recommendations and measuring page performance on mobile and desktop with Chrome Developer Tools.
Then comes the really fun part: optimization! You’ll learn about easy-to-implement performance gains and develop a simple and powerful model for uncovering optimization opportunities.
You’ll put your newfound performance skillset to the test with the final project, where you’ll be optimizing your own online portfolio website!
Lesson 0 (20 minutes)
You can’t optimize what you can’t measure, so in this lesson you’ll learn how to open Chrome Developer Tools to measure the performance of mobile and desktop websites.
Lesson 1 (60 minutes)
* **HTML** is converted to the **Document Object Model (DOM)**.
* **CSS** is converted to the **CSS Object Model (CSSOM)**.
* the browser runs **layout** to determine the position and size of elements before **painting** pixels on the screen.
Throughout the lesson, you’ll learn how to take advantage of the Timeline view in **Chrome Developer Tools** to measure each and every step’s performance on mobile and desktop.
Lesson 2 (90 minutes)
* building **quick and dirty** diagrams of the Critical Rendering Path.
* identifying **three key metrics** to triangulate potential performance bottlenecks.
- Ilya Grigorik - Ilya Grigorik is a web performance engineer at Google and the author of High Performance Browser Networking (O'Reilly). When he's not optimizing web performance, he is likely found working on new performance or analytics related open source projects, launching fun projects like vimgolf.com, or optimizing his triathlon times. Prior to focusing on web performance, Ilya spent 5 years measuring and optimizing performance of social campaigns - he was the founder of PostRank, which was acquired and integrated into Google Analytics. In short, he likes to optimize and make things fast.
- Cameron Pittman - A passionate educator and programmer, Cameron lives and breathes web development as he creates programming courses at Udacity. Before coming here, Cameron was a combination Director of Content and web developer at Seattle startup LearnBIG. He taught four years of high school physics and chemistry in Nashville, TN, during which time he pioneered teaching physics with the video game Portal 2. Cameron graduated with a degree in physics and astronomy from Vanderbilt University and earned his master's in teaching from Belmont University.
Udacity est une entreprise fondé par Sebastian Thrun, David Stavens, et Mike Sokolsky offrant massives des cours en ligne ouverts (MOOCs).
Selon Thrun, l'origine du nom Udacity vient de la volonté de l'entreprise d'être "audacieux pour vous, l'étudiant ". Bien que Udacity se concentrait à l'origine sur une offre de cours universitaires, la plateforme se concentre désormais plus sur de formations destinés aux professionnels.