Welcome to charisTheo.io
Fluid website scrolling with a tiny trick
Increase frames per second while users scroll a website with a tiny CSS trick.
Offline pages in Progressive Web Apps
A step-by-step guide on how to store and list offline available pages using Service Workers and the Cache API on the web.
Workbox Strategies with examples and use-cases
Looking at how to use the Workbox library and its Strategies to improve any Progressive Web App.
Cache handling with Service Workers and the Cache API
Leveraging service workers and the powerful Cache API for creating fast and app-like experiences on the web.
Optimised images for the web, responsive and adaptable
Images are one of the biggest performance bottlenecks — but only if you let them be.
Optimise media on the web with next generation formats
Optimise media on the web by serving users with next generation formats like WebP, WebM and AVIF.