Welcome to charisTheo.io

Increase frames per second while users scroll a website with a tiny CSS trick.

A step-by-step guide on how to store and list offline available pages using Service Workers and the Cache API on the web.

Looking at how to use the Workbox library and its Strategies to improve any Progressive Web App.

Leveraging service workers and the powerful Cache API for creating fast and app-like experiences on the web.

Images are one of the biggest performance bottlenecks — but only if you let them be.

Optimise media on the web by serving users with next generation formats like WebP, WebM and AVIF.

Faster searching in websites with custom Chrome Search engines

Run small snippets of JavaScript code quickly within Chrome DevTools

Become a Developer Wizard 🧙‍♂️ in no time with the use of snippets

Showcase of PWA recipes for some of the most common use cases of PWAs.

IreneBielsa.com is an e-commerce and portfolio website for a Spanish slow fashion brand.

A Wiki page for building and troubleshooting Progressive Web Apps.