Codepen pre

by Vladimir January 23, 2014

HTML

<form action="http://codepen.io/pen/define" method="POST" target="_blank">
  <input type="hidden" name="data" value='{"title": "New Pen!", "html": "<div>Hello, World!</div>", "css": "body {color: red;}"}'>

  <input type="submit" value="Create New Pen with Prefilled Data">
</form>

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All ads in the editor and listing pages are turned completely off.
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You get to try and use features (like the Palette Color Generator) months before everyone else.
Fiddle collections

Sort and categorize your Fiddles into multiple collections.
Private collections and fiddles

You can make as many Private Fiddles, and Private Collections as you wish!
Console

Debug your Fiddle with a minimal built-in JavaScript console.

Codepen pre

HTML

Please Whitelist JSFiddle in your content blocker.

Join the 4+ million users, and keep the JSFiddle dream alive.

Ad-free

Use pre-released features

Fiddle collections

Private collections and fiddles

Console