WPO Stats

Case studies and experiments demonstrating the impact of web performance optimization (WPO) on user experience and business metrics.

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    Contentsquare aggregated data from 997 customer sites for the three months starting May 1st of 2023. They found that users who experienced good INP had a 25% better conversion rate than users experiencing poor INP, and users experiencing poor INP were more likely to bounce or express frustration via rage clicks or multiple interactions than users experiencing good INP. Permalink Share on Twitter

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Hungry for more?

If you're looking for more resources around selling performance, we recommend the following resources:

  • Time is Money book cover

    Time is Money by Tammy Everts

    Tammy's book has study after study after study about why performance matters. She covers not just the business side of things, but also the psychology of performance: how does bad performance make users feel.
  • Designing for Performance book cover

    Designing for Performance by Lara Hogan

    Lara's book is loaded with great information about advocating for performance within your organization.

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@2025. A Tammy Everts and Tim Kadlec production.

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