ClassyBlocks — Custom CSS Classes for Gutenberg Blocks

ClassyBlocks transforms how you style Gutenberg blocks. Instead of wrestling with theme CSS, writing repetitive rules, or switching back and forth between editors, you can create and apply custom CSS classes directly from the block editor — with real-time preview and one-click application. Whether you're building a simple landing page or a complex multi-site network, ClassyBlocks keeps your workflow fast, consistent, and maintainable. Key Features

• Custom CSS Class Manager — Create your own library of CSS classes with full support for :hover, :focus, :active, and :visited pseudo-states. Name, describe, and organize each class with its own CSS rules.
• 9 Built-in CSS Frameworks — Bootstrap 5.3, Materialize, Pure CSS, Bulma, UIkit, Spectre, Semantic UI, Foundation, and Tailwind CSS. Toggle each framework on/off independently for the editor and the frontend.
• Live Preview in Gutenberg — See exactly how each class looks in real time, directly inside the block editor. No more guesswork or page reloads.
• One-Click Application — Apply any custom or framework class to a block with a single click. No typing class names manually.
• Pack Manager — Export, import, and share complete sets of CSS classes as packs. Perfect for agencies managing multiple sites or teams collaborating on design systems.
• Interactive Preview Mode — Test your classes interactively with Auto and Interactive modes that cycle through pseudo-states.

What you can do

• Design faster — Build a reusable library of utility classes and apply them across your entire site in seconds.
• Stay organized — Group classes into packs by project, component, or design system. Search, filter, and manage everything from one dashboard.
• Work with any theme — ClassyBlocks works with every WordPress theme. It integrates especially well with Blocksy, GeneratePress, Astra, and other modern block-ready themes.
• Keep performance tight — The plugin generates a minimal, optimized stylesheet with zero JavaScript overhead on the frontend. No bloat, no slowdowns.

Perfect for

• Developers and agencies building client sites with consistent design systems.
• Freelancers who want to speed up their Gutenberg workflow without custom coding every time.
• Site owners who want more design flexibility without installing a page builder.

ClassyBlocks — the smart way to manage CSS classes in WordPress.

2.3.0

• Added WordPress.org SVN deploy automation via GitHub Actions.
• Updated screenshots and WordPress.org assets.
• Improved readme.txt description and formatting.
• Fixed Tested up to version consistency.

2.2.0

• Tailwind CSS now bundled locally (no external CDN dependency)
• Enhanced security: CSS sanitization, file upload validation, XSS fixes
• Improved localization: all JavaScript strings are translatable
• Replaced uniqid() with wp_generate_uuid4() for stronger IDs
• Added HTTP method checks to all AJAX handlers
• Various performance and security improvements

2.1.0

• Rebrand: Studio Immens CSS Classes → ClassyBlocks
• Introdotto ClassyBlocks Pro: animazioni scroll-driven, Pack Manager e funzionalità premium

1.2.1

• bug fix
• Added setting page options

1.1.1

• bug fix

1.1.0

• Added multiple set of framework CSS easly selectable from editor ( bootstrap, materialize, purecss, uikit, spectre, bulma, semantic )
• Added setting page

1.0.0

• Initial stable release
• Added core set of CSS utility classes
• Compatibility with Gutenberg and Blocksy, GeneratePress, and Astra themes