About htmx
htmx lets any HTML element send requests and place the response on the page, using attributes instead of JavaScript code. It brings AJAX, CSS transitions, WebSockets and server-sent events into plain HTML.
What it does
An attribute such as hx-post tells the element which request to send and where the response should go. The server returns a fragment of HTML, and htmx swaps it into the page. This keeps most logic on the server, and the browser only handles small updates. Version 4 has been released, while the 2.x line stays the default on npm for existing projects.
Key features
- Requests from any element with hx attributes
- Control over where responses are placed
- Server-sent events and WebSockets from HTML
- Small script with no dependencies
Who it's for
Backend developers and teams who build server-rendered apps and want interactive parts without a large client framework. It suits internal tools, admin pages and content sites where HTML from the server is the main output.
Pricing and good to know
The page does not state a licence or price, so check the repository before using it commercially. The library is compact and can be loaded from a CDN with a script tag. Teams used to single-page apps may need time to adjust to a server-first model.
Highlights
- Requests from any element using hx attributes
- Choose where server responses are placed
- Server-sent events and WebSockets in HTML
- Small script with no dependencies
