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wtf is htmx?

patrickjs/htmx — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2023-12-03

Audience · developerComplexity · 2/5DormantSetup · easy

TL;DR

htmx is a lightweight JavaScript library that lets you add HTML attributes to any element so it can send server requests and swap in the response, without a full JavaScript framework.

Mindmap

mindmap
  root((htmx))
    What it does
      Adds HTML attributes
      Any element can request
      Updates page without reload
    Tech stack
      JavaScript
      HTML
    Use cases
      Dashboards
      Content sites
      Internal tools
    Audience
      Backend developers
      Python Ruby PHP Node devs
    Why use it
      Small size
      No dependencies
      Works in old browsers

Code map

Detail Auto

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filefunction / class

Why would anyone build with this?

REASON 1

Add dynamic, no-reload page updates to a server-rendered app without adopting React or Vue.

REASON 2

Build a dashboard or internal tool where clicks and form submits update just part of the page.

REASON 3

Add smooth interactive touches to a content site while keeping the backend rendering HTML.

What's in the stack?

JavaScriptHTML

How it stacks up

patrickjs/htmx0verflowme/alarm-clock0verflowme/seclists
Language—CSS—
Last pushed2023-12-032022-10-032020-05-03
MaintenanceDormantDormantDormant
Setup difficultyeasyeasyeasy
Complexity2/52/51/5
Audiencedevelopervibe coderops devops

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 5min

Yoink these prompts

Prompt 1
Show me how to add an hx-post attribute to a button so it submits a form and swaps in the server's response.
Prompt 2
Help me add htmx to my Flask/Express app so clicking a link updates part of the page without a full reload.
Prompt 3
Write an example HTML page using htmx's hx-get and hx-swap to load content into a div.
Prompt 4
Explain how htmx's hx-swap attribute controls which part of a page gets replaced after a request.

Frequently asked questions

wtf is htmx?

htmx is a lightweight JavaScript library that lets you add HTML attributes to any element so it can send server requests and swap in the response, without a full JavaScript framework.

Is htmx actively maintained?

Dormant — no commits in 2+ years (last push 2023-12-03).

How hard is htmx to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is htmx for?

Mainly developer.

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