Browser Rendering Optimization The Critical Rendering PathFollow along with Paul Lewis and Cameron Pittman as they explain common performance issues on the web and what we should be hoping to achieve in terms of speed.App LifecyclesLearn about the four parts of a web app's lifecycle: RAIL (Response, Animate, Idle, and Load). You'll discover how these phases cause jank in your web apps.Weapons of Jank DestructionLearn how to use Chrome's Developer Tools Timeline to find page jank and remove it from your site. JavaScriptLearn how to use JavaScript to optimize animations and use web workers to speed up performance. Styles and LayoutDiscover how changing styles can result in surprisingly slow page speed. You'll also learn how to prevent Forced Synchronous Layouts.Compositing and PaintingLearn how to manage page layers and improve page performance using the Chrome Dev Tools Paint Profiler.CompanyAbout UsWhy Udacity?BlogIn the NewsJobs at UdacityBecome a MentorPartner with UdacityResourcesCatalogCareer OutcomesHelp and FAQScholarshipsResource CenterFeatured ProgramsBusiness AnalyticsSQLAWS Cloud ArchitectData AnalystIntro to ProgrammingDigital MarketingSelf Driving Car EngineerOnly at UdacityArtificial IntelligenceDeep LearningDigital MarketingFlying Car and Autonomous Flight EngineerIntro to Self-Driving CarsMachine Learning EngineerRobotics Software EngineerAI Master’sMaster of Business AdministrationMaster of Science in AIUdacity SchoolsSchool of Animation and Game DevelopmentSchool of Artificial IntelligenceSchool of Autonomous SystemsSchool of BusinessCareer ResourcesSchool of Cloud ComputingSchool of CybersecuritySchool of Data ScienceSchool of DevOpsSchool of Executive LeadershipSchool of Product ManagementSchool of Programming and Development