Resources for Theme Designers: 20 Free CSS3 Tools & Generators

Published on November 13th, 2012

Last Updated on March 12th, 2021


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This is the second part of our “Resources for WordPress Theme Designers” series, last time out we looked at Free Font Icons. This time I am going to be looking at tools to help with your CSS development. With the introduction of CSS3 things got a little more complicated and much more powerfull for web designers and there is a whole load of new tools to make your life easier and help you get to all the new features.


CSS3Ps – free cloud based photoshop plugin that converts your layers to CSS3.

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Sencha Animator

With the power of Sencha Animator, use CSS3 animations to build the next generation rich-media ads. Animate text and images with smooth transitions, design buttons with gradients, and embed analytics. All backed by the strength of web standards.

Prefix My CSS

Prefix your CSS3 code – add support for vendor prefixes.

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CSS3 Generator

Generate CSS3 effects visually and copy the created code

CSS3 Transforms

One of the most powerful features of CSS3 are transforms, which allow us to take any element in an HTML document, and while not changing its effect on the page layout, rotate it, translate it (move it left, right, up and down), skew it and scale it.

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Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.


Sass makes CSS fun again. Sass is an extension of CSS3, adding nested rules, variables, mixins, selector inheritance, and more. It’s translated to well-formatted, standard CSS using the command line tool or a web-framework plugin.


LESS extends CSS with dynamic behavior such as variables, mixins, operations and functions. LESS runs on both the client-side (Chrome, Safari, Firefox) and server-side, with Node.js and Rhino.

Font Dragr

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CSS3 Patterns

A gallery of patterns generated with just code

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Button Maker

Create CSS3 butt0ns with this online generator


39 CSS animations with source code

Cubic Bezier

Easing and bouncing effects for CSS transitions

CSS Desk

Online sandbox for testing CSS

Border Radius

For generating CSS border radius values

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CSS 3.0 Maker

Handy online tool for generating all sorts of CSS3 code


PIE makes Internet Explorer 6-9 capable of rendering several of the most useful CSS3 decoration features

CSS 3 Menu

Creating a nice looking menu no longer needs all the code and time it use to, thanks to CSS3. Using this FREE CSS3 Menu you can create great looking buttons using just CSS3 in a few clicks.

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Border Image

Generator for creating borders made of images with CSS3

Oliver Dale is the founder of Kooc Media, An Internet Company based in Manchester, UK. I founded WPLift in 2010.