Today, you can have all the SEO, inbound marketing, and dynamic web design necessary to turn your website into an ROI powerhouse – but it all means relatively little without website performance optimization. For many businesses, speed = money, and having a poorly optimized website will always lead to lower conversion rates and unhappy customers.

So when it comes to website success, we are ready to crown ROI as #1 in terms of performance metrics. Because if your website doesn’t load in under 3 seconds, your potential ROI has already declined substantially.

We’ve compiled a list of some of the best resources on website performance ROI available. Have we missed anything? Let us know in the comments section – we will be updating the list as new insights are published!

Articles & eBooks

• How to Prove the ROI of WPO –  Yottaa
• 5 Key Aspects to Creating a Great Website to Increase ROI – Hemley Marketing
  
• Why Marketers Must Care About Site Speed – Search Engine Watch
• eCommerce Performance – Website Speed Impacts Your Bottom Line – EdgeCast
• Proof that speeding up websites improves online business – Watching Websites
• Automated front-end performance: How do you calculate developer ROI? – Web Performance Today
• How Your Website Loses 7% of Potential Conversions – ClickZ
• Increase Website ROI by Delivering a Flawless Web Experience to Every User – Cyscape
• A Beginner’s Guide to Web Performance – Yottaa 
• The Effect of Page Load Speed on Conversion Rate Optimization – Wordstream
• Why Site Speed Optimisation Should Be Part of Your SEO Strategy – SEOMoz
• Why don?t companies track ROI of testing and optimization programs? – Marketing Sherpa
• Using WPO technologies to derive positive ROI – Internap
• eCommerce and Website Performance: A Look Into the Industry – Yottaa
• The Simple ROI of Website Performance – Rigor
• Free Report: State of the Union for eCommerce Page Speed & Website Performance [Spring 2013] – Radware
• ROI and Performance Framework – Red Ant

Infographics

• ROI of Web Performance – Rigor
• How Loading Time Affects Your Bottom Line – Kissmetrics
• The Cost of Poor Website Performance – SmartBear
• WTH is Up With Your WPO? – Internap

Tools 

• Website ROI Maximizer Tool – SysIQ
• Website Optimization ROI Calculator – ClickZ
• WebsiteTest.com – Yottaa
• PageSpeed – Google
• Strangeloop Speed: Revenue Calculator – Strangeloop
• WebPageTest.org – Google