Aaron Peters

Web Performance Blog

Tips for how to make your site faster, reviews of third party scripts and tools and links to high quality web performance resources online.

Why Loading Third Party Scripts Async is not Good Enough

Loading third party scripts async is key for having high performance web pages, but those scripts still block onload. Take the time to analyze your web performance data and understand if and how those not-so-important content/widgets/ads/tracking codes impact page load times. Maybe you should do what we did on CDN Planet → defer their loading until after onload.