high power tools for HTML
NEWS: htmx 2.0 has been released! It is not currently marked as latest in NPM so that people using the 1.x line are not accidentally upgraded. We will mark 2.0 as latest at some point in 2025.


htmx gives you access to AJAX, CSS Transitions, WebSockets and Server Sent Events directly in HTML, using attributes, so you can build modern user interfaces with the simplicity and power of hypertext

htmx is small (~14k min.gz’d), dependency-free, extendable & has reduced code base sizes by 67% when compared with react


By removing these constraints, htmx completes HTML as a hypertext

quick start

  <script src="https://unpkg.com/htmx.org@2.0.1"></script>
  <!-- have a button POST a click via AJAX -->
  <button hx-post="/clicked" hx-swap="outerHTML">
    Click Me

The hx-post and hx-swap attributes on this button tell htmx:

“When a user clicks on this button, issue an AJAX request to /clicked, and replace the entire button with the HTML response”

htmx is the successor to intercooler.js

Read the docs introduction for a more in-depth… introduction.

Note that htmx 2.x has dropped IE support. If you require IE support you can use the 1.x code-line, which will be supported in perpetuity.


We are happy to announce the release of Hypermedia Systems, a book on how to build Hypermedia-Driven Applications using htmx & more:

hypermedia systems


htmx development can be supported via GitHub Sponsors

Thank you to all our generous supporters, including:

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