DevDays Europe 2020
DevDays Europe 2020

DevDays Europe 2019


May 14-16, 2019

Tobias Baldauf

trivago, Germany


Tobias is the Knowledge Lead for Web Performance at trivago. He creates innovative web performance tools, new image optimization algorithms and speaks at conferences. He’s a proud dad, tries to be a mindful vegetarian and loves making music. Find out more at


Image Formats, Performance and Cognitive Load

Images are a crucial component for successful conversions: they evoke emotions, build trust and prompt action. They also form 2/3rds of our website’s weight & have a high correlation to page load time, Speed Index and Time To First Meaningful Interaction. That’s why at trivago, we’re working towards highly optimized and well-targeted visuals. In this talk, you’ll learn how we optimize and deliver images for maximum effectiveness and which important lessons we learned along the way.

Session Keywords

Perceived Performance