Developer builds 2.9 kB reactive UI engine that runs from a single HTML file

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A software developer frustrated with the overhead of modern frontend tooling built a minimal reactive UI library called HTMP (HyperText Mutation & Projection) while working on a personal dashboard project. The library uses native browser APIs — including DOMParser and JavaScript Proxy — to bind and update only the specific DOM nodes that change, eliminating the need for a virtual DOM or diffing algorithm. At just 2.9 kB gzipped, HTMP requires no build step, no npm install, and no JSX, and can be imported directly from a CDN into a plain HTML file. The developer published the experiment to invite feedback and real-world testing, while acknowledging that HTMP is not intended to replace React, Vue, or HTMX for large or team-based projects. It is positioned instead as a lightweight option for small interactive interfaces that currently rely on jQuery or verbose vanilla JavaScript.

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