Preact
ELI5 — The Vibe Check
Preact is React after a juice cleanse. It does almost everything React does but in 3KB instead of 40KB. If React is a Swiss Army knife, Preact is just the really good blade you actually use. Same API, way less baggage.
Real Talk
Preact is a fast, 3KB alternative to React with the same modern API. It provides a thin Virtual DOM abstraction, supports most React-compatible libraries via preact/compat, and is ideal for performance-constrained environments.
When You'll Hear This
"We aliased React to Preact and saved 35KB" / "Preact is perfect for widget embeds where bundle size matters"
Related Terms
Signals
Signals are like tiny radio transmitters for your data. When a value changes, only the exact things listening to that signal update.
Solid.js
Imagine React went to the gym, got ripped, and dropped the Virtual DOM weight. Solid.
Virtual Scrolling
Virtual Scrolling is the magician's trick for long lists. You have 10,000 items but only render the 20 visible ones.