Astro islands: when to hydrate, when to stay static
A practical rule of thumb for deciding which components deserve JavaScript — and why most of a marketing site never does.
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Marc Devos
Astro Engineer
Astro engineer at Quaeris. Obsessed with build output, Core Web Vitals and shipping zero JavaScript by default.
Extended biography
Marc Devos turns the Quaeris design system into Astro code. He owns the performance budget of every theme — font loading, image pipelines, CSS size — and the framework patterns that keep them easy to extend.
His articles cover the engineering side of the catalogue: islands architecture, content collections and the upgrade notes that ship with every release.
Articles by Marc Devos — 02
Shipping a 100-Lighthouse theme, every release
The performance budget behind the Quaeris catalogue: fonts, images, CSS and the checks every theme passes before it ships.
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