Best of Web Components — June 2025

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   Article

   freeCodeCamp·50w

   The Micro-Frontend Architecture Handbook

   A comprehensive guide covering four main approaches to micro frontend architecture: iframes with cross-window messaging, Web Components with Shadow DOM, single-spa for orchestrating multiple SPAs, and Module Federation for runtime code sharing. Each method is explained with practical code examples, pros/cons analysis, and real-world use cases. The guide also covers additional tools like Piral, Luigi, and Import Maps, helping developers choose the right approach based on team structure, technical requirements, and deployment needs.

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2. 2
   Article

   CSS-Tricks·48w

   CSS-Tricks

   KelpUI is a new CSS library by Chris Ferdinandi that combines modern CSS features with Web Components. The library emphasizes base styles, utility classes, CSS variables for customization, and Web Components that keep HTML in the light DOM. It uses CSS Cascade Layers for logical structure, maintains low specificity selectors, includes accessible color palettes, and can be loaded from CDN or downloaded locally. The development process is being openly documented through a series of blog posts.

   78

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3. 3
   Article

   Community Picks·48w

   <syntax-highlight> element

   A web component library that provides syntax highlighting functionality using the CSS Custom Highlight API. The component can be imported as an ES module or via CDN, used with simple HTML markup by specifying a language attribute, and styled with CSS themes. Limited themes are currently available, but custom themes can be created.

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