Quantum Viewports

Quantum Viewports extends the native Gutenberg blocks with responsive style controls without using extra blocks. Unlike other plugins that add custom blocks or duplicate components, Quantum Viewports integrates directly with the standard block components. Key Features:

• Works with all Block Themes out-of-the-box
• Adds responsive controls (mobile, tablet, desktop) directly into block styles for margin, padding, border, shadow, background, and custom properties
• Wraps all generated styles into CSS classes for clean frontend output
• Built with a mobile-first approach: settings are applied to the appropriate viewport depending on which viewport is active while editing
• Includes a Keyframe-style UI to preview, reset, or manage responsive styles per viewport
• Includes a developer-friendly API (registerRenderer) to attach custom style components (currently JavaScript only)

Early Access – Feedback Welcome Quantum Viewports is currently in active Early Access. The responsive style engine already works well with many Block Themes, but we are still gathering real-world feedback to ensure broader compatibility across different themes and editor configurations. If you encounter something unexpected. A great success story, a bug, or a theme setup that behaves differently, we would love to hear from you. Every report helps us shape a reliable and truly native solution for responsive Block Styles in the WordPress ecosystem.