A lightweight server-oriented template language for JavaScript that fetches and renders HTML dynamically with minimal client-side code.
HMPL is a lightweight server-oriented template language for JavaScript that allows developers to fetch HTML from the server and render it dynamically with minimal client-side code. It solves the problem of bloated client bundles by shifting rendering logic to the server, enabling dynamic UIs while keeping applications small and efficient.
Frontend and full-stack developers building modern web applications who want to reduce client-side JavaScript and leverage server-driven templates for dynamic content.
Developers choose HMPL for its minimal footprint, server-oriented approach, and built-in safety features like XSS protection, offering a lightweight alternative to heavier frameworks while maintaining dynamic capabilities.
🐜 HMPL.js is a lightweight server-oriented template language for JavaScript. Fetch HTML, render it safely, and keep apps dynamic, modern, and small.
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HMPL packs extensive functionality into just a few kilobytes, as shown in the app size comparison image, significantly reducing client bundle sizes compared to traditional frameworks.
By fetching and rendering HTML from the server with minimal JavaScript, it enables dynamic UIs while shifting rendering logic to the backend, reducing client-side code.
Integrates DOMPurify to sanitize HTML responses from the server, ensuring safe rendering without additional configuration, as mentioned in the features list.
Supports JSON5 for writing expressive objects directly in templates, allowing for more readable and maintainable code with minimal syntax overhead.
Starting from version 2.2.0, JSON5 and DOMPurify must be connected separately, adding steps to installation and increasing setup complexity.
HMPL requires a backend server to handle requests, making it unsuitable for purely client-side or static applications and adding infrastructure overhead.
As a newer project, it has fewer community resources, plugins, and integrations compared to established alternatives like HTMX, which might limit tooling and support.
HMPL is an open-source alternative to the following products:
HTMX is a lightweight JavaScript library that allows developers to access modern browser features directly from HTML, enabling AJAX, CSS Transitions, WebSockets, and Server-Sent Events without writing JavaScript.
A minimal JavaScript framework for building user interfaces, focusing on declarative rendering and reactivity with minimal overhead.