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SiteOrigin CSS 1.6.6 – WordPress Plugin

SiteOrigin CSS

v1.6.6 ★★★★★4.9/5 (153) Updated 2 days ago Live Demo ↗
Download SiteOrigin CSS 1.6.6
Free download · version 1.6.6

Description

At a glance

SiteOrigin CSS v1.6.6 — free WordPress plugin download. Key facts: 100K+ active installs · 4.9/5 rating from 153 reviews · updated May 21, 2026 · requires WordPress 3.9+ & PHP 7.0.0+.

SiteOrigin CSS is the intuitive and powerful CSS editor designed to empower your WordPress site customization. Enjoy a seamless editing experience with real-time visual controls, making it easy to tweak your site’s look and feel instantly. Whether you’re a beginner or an advanced developer, SiteOrigin CSS has you covered.

For beginners, our user-friendly visual controls and live previews eliminate the guesswork from CSS editing. See your changes as you make them, ensuring your site looks exactly as you envision. For advanced users, we offer robust code autocompletion, speeding up your workflow and making CSS writing faster and more efficient than ever before. Take full control of your site’s design with SiteOrigin CSS and bring your creative vision to life.

Inspector

The hardest part of editing your site’s design using CSS is usually finding the correct selector to use. The powerful inspector that comes with SiteOrigin CSS makes this easy. While viewing a full preview of your site, just click on an element, and it’ll help you identify the best selector to use to target that element.

The inspector will help you even if you have no idea what a CSS selector is.

Visual Editor

Don’t like playing around with code? No problem. SiteOrigin CSS has a set of simple controls that make it easy to choose colors, styles, and measurements. Combined with the inspector, you’ll be able to make changes in just a few clicks.

CSS Editor

SiteOrigin CSS has a powerful CSS editor, the likes of which you’d usually only expect from high-end IDEs. It has autocompletion for both CSS selectors and attributes. It also features very useful CSS linting to help you identify issues in your code before you publish your changes.

It’s Free

We’re committed to keeping SiteOrigin CSS free. You can install it on as many sites as you like without ever worrying about licensing. All future updates and upgrades will be free, and we even offer free support over on our friendly support forums.

Works With Any Theme

There’s an ever-growing collection of awesome WordPress themes, and now with SiteOrigin CSS, you can edit every single one of them to your heart’s content. No matter what theme you’re using, SiteOrigin CSS will work perfectly.

Actively Developed

We’re actively developing SiteOrigin CSS. Keep track of what’s happening over on GitHub.

Documentation

Documentation is available on SiteOrigin.

Support

Free support is available on the SiteOrigin support forums.

SiteOrigin Premium

SiteOrigin Premium enhances SiteOrigin CSS with a Google Web Font Selector. Choose from hundreds of beautiful web fonts right in the visual editor.

SiteOrigin Premium includes access to our professional email support service, perfect for those times when you need fast and effective technical support. We’re standing by to assist you in any way we can.

Frequently asked questions

What is SiteOrigin CSS?

SiteOrigin CSS is a free WordPress plugin available under the GPL license. The current version is 1.6.6. It is active on over 100K websites.

Is SiteOrigin CSS free to download?

Yes — SiteOrigin CSS 1.6.6 is a free GPL download with no hidden fees, no account needed, and no feature locked behind a paywall in this package. Users rate it 4.9 out of 5 based on 153 reviews.

How do I install SiteOrigin CSS 1.6.6?

Download the ZIP file from this page, then in your WordPress dashboard go to Plugins → Add New → Upload Plugin, choose the file, click Install Now, then Activate. The plugin works immediately after activation — no license key or extra setup is required for the core features.

What are the requirements for SiteOrigin CSS?

SiteOrigin CSS 1.6.6 requires WordPress 3.9 or higher and PHP 7.0.0 or higher. Most modern WordPress hosts already meet these versions. Running older versions may cause features to break, so update WordPress and PHP first if your site is behind.

When was SiteOrigin CSS last updated?

Version 1.6.6 was last updated on May 21, 2026. This page is refreshed automatically, so the download here always matches the newest version we have verified.

Is the SiteOrigin CSS download safe?

The file is sourced directly from the official WordPress.org repository — the same file the developer published. It is served unmodified, so what you install here is byte-identical to the official release.

Version: 1.6.6
Updated: October 1, 2026

Technical details

Version1.6.6
Last updatedMay 21, 2026
Active installs100,000+
Rating★★★★★ 4.9/5 (153 reviews)
Requires WordPress3.9 or higher
Requires PHP7.0.0 or higher
AuthorGreg - SiteOrigin
Tagscss-editor, live-editing, theme-editor, visual-css, website-styling
Demo SiteOrigin CSS

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