Guardrail Blocks is a WordPress plugin offering Gutenberg blocks that enforce accessibility by design. It ensures WCAG-safe color contrast and maintains a correct heading hierarchy, preventing common authoring errors and reducing the need for post-publication accessibility audits. Ideal for site owners and creators prioritizing accessible web content.
Guardrail Blocks sits in PulseGate's UI/UX & prototyping category. It focuses on preventing accessibility failures in WordPress site design by enforcing WCAG standards at the block level. It is built as a B2B product for wordPress site owners and content creators focused on accessibility. Guardrail Blocks is free to use. The product ships for the web.
Behind Guardrail Blocks is BreonWilliams, and the product first shipped in 2026. Key capabilities include WCAG color contrast enforcement, heading hierarchy validation, and accessible block components.
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