HTMX - high-performance interactive web apps

HTMX - HTML-First approach to interactive web applications

What is HTMX?

HTMX is a modern JavaScript library that enables creating interactive web applications directly from HTML. It provides access to AJAX, CSS Transitions, WebSockets and Server Sent Events through HTML attributes, eliminating the need to write JavaScript.

Founded
2020
Library size
~14KB gzipped
Type
Frontend Library
GitHub Stars
37k+ stars
14KB
Small library size
0 JS
JavaScript code to write
HTML
Only HTML attributes
index.html
<!-- HTMX Interactive Form Example -->
<!DOCTYPE html>
<html lang="en">
<head>
<title>HTMX Interactive Form</title>
<script src="https://unpkg.com/htmx.org@1.9.10"></script>
</head>
<body>
<!-- Interactive Form with HTMX -->
<form hx-post=/users
hx-target=#result
hx-swap=innerHTML>
<input type=text name=name placeholder="Enter name">
<button type="submit">Add User</button>
</form>
<!-- Real-time updates with SSE -->
<div hx-sse="connect:/events"
hx-sse="swap:message">
Loading...
</div>
<!-- Results container -->
<div id="result"></div>
</body>
</html>
Output:
Form submitted successfully!
✓ User "John" added to database
Real-time update: 3 users online
Page updated without JavaScript!
techCodeExamples.htmx.note1
techCodeExamples.htmx.note2

Advantages of HTMX - why it's worth using

6 key HTMX advantages - simplicity without JavaScript, minimal bundle size, progressive enhancement, hypermedia approach

Disadvantages of HTMX - honest assessment of limitations

5 real HTMX drawbacks - limited ecosystem, server dependency, global state challenges, testing difficulties

Use Cases for HTMX - when to use

4 practical HTMX use cases - interactive forms, live dashboards, progressive enhancement, micro-interactions

Interactive forms

Real-time validation, dynamic form fields, instant feedback, progressive enhancement

tech.useCases.frameworks
DjangoFlaskRailsLaravel
tech.useCases.realExamples

Registration forms with live validation, search suggestions, multi-step wizards, inline editing

Live updating dashboards

Real-time metrics, auto-refresh content, server-sent events, minimal JavaScript

tech.useCases.frameworks
FastAPISpring BootExpress.js
tech.useCases.realExamples

Admin panels, monitoring dashboards, chat applications, notification systems

Progressive Enhancement

Graceful degradation, accessibility-first, works without JS, incremental adoption

tech.useCases.frameworks
WordPressDrupalJekyll
tech.useCases.realExamples

Legacy system modernization, e-commerce product filters, blog comment systems

Micro-interactions

Small interactive elements, lazy loading, modal dialogs, smooth transitions

tech.useCases.frameworks
htmx + Alpine.jsStimulusUnpoly
tech.useCases.realExamples

Like buttons, infinite scroll, image galleries, dropdown menus, tooltips

FAQ: HTMX – Frequently Asked Questions

Complete answers about HTMX - from HTML attributes to choosing between HTMX vs React, performance and business benefits

contactCTA.title

contactCTA.description

contactCTA.response