A walk-through of adding per-block CSS using in theme.json that covers tips, tricks, and pitfalls.
A walk-through of customizing the core WordPress block styles directly in theme.json instead of using a custom stylesheet.
September 2025 highlights: Abilities API testing, Accordion blocks, theme.json form styling, Data Views upgrades, create-block variants, AI tools with chatbot demo, Playground improvements, and new Developer Blog articles.
WordPress 6.9 is set to ship an Accordion block. This guide walks you through adding custom styles and patterns for it.
Whether it’s blog posts, documentation or sell copy, great typography can transform your long copy from a hard slog to a great read. In just four steps! Find out how in part 3 of the WordPress Developer Blog’s type series.
What does the future of WordPress hold? A new admin, future API discussions, and the usual updates in this monthly roundup.
Learn about all the new updates coming to WordPress for developers, covering plugins and tools, theme updates, and the new Playground MCP Server.
WordPress 6.6 introduced support for custom aspect ratios. Learn how to register your own via theme.json.
A walkthrough of how to use the new and updated improvements to the Block Style Variations system in WordPress 6.6, including section styles.
With each major WordPress update, theme authors gain access to new tools that decrease their development workload and can increase the performance of their themes. Most of these improvements in the last few releases come from theme.json updates. The theme.json file adds extra settings and styles that can replace the need for custom CSS. These…
