Quantum Viewports
Extend your BlockTheme to make standard block styles responsive! ---
Consider an alternative
Quantum Viewports shows warning signs in 2026 — compare the alternatives below before installing. Was last updated 9 months ago, and scores 36/100 on our health check.
- Small user base (<10 active installs)
- Very few reviews so far
- Only tested up to WordPress 6.9 (latest is 7.1)
- Needs PHP 8.1 or newer
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Quantum Viewports stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| breakpoints | >100 |
| controls | >100 |
| mobile | >100 |
| responsive | >100 |
| viewports | >100 |
About Quantum Viewports
From the official readme · v0.9.11Description
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.
Getting Started
Example: Adjusting paragraph spacing with mobile-first and breakpoints
-
Insert a Paragraph block
- Open the Block Editor and add a Paragraph block.
-
Mobile View (base, 0px)
- Select the Paragraph → open Styles panel → Spacing → Margin → Bottom.
- Set margin to 20px.
- This applies from 0px up, used as the baseline for all viewports.
-
Tablet View (override, min-width tablet)
- Switch to Tablet viewport.
- Change bottom margin to 40px.
- This applies from the tablet breakpoint upwards, including Desktop.
- A Keyframe marker appears for Tablet.
-
Desktop View (optional, min-width only)
- Switch to Desktop viewport.
- To apply changes only to Desktop, toggle “Edit on min-width”.
- Set bottom margin to 60px.
- Now a Media Query is generated for Desktop only.
- Tablet margin remains 40px, Mobile margin remains 20px.
-
Frontend Result
- Save and preview.
- Margins adapt: Mobile 20px, Tablet 40px, Desktop 60px.
- All styles are wrapped in CSS classes, mobile-first, optimized for any Block Theme.
Feedback and Issues
GitHub Repository: https://github.com/Quantum-Press/Viewports
Contact: https://quantum-press.com/en/contact
Installation
- Upload the plugin files to the
/wp-content/plugins/quantum-viewportsdirectory, or install via the Plugins screen in WordPress. - Activate the plugin through the ‘Plugins’ screen in WordPress.
- Open the block editor (Gutenberg) and edit any block. You will see new responsive controls in the block inspector.
- Switch between desktop, tablet, and mobile views to style your blocks per viewport.
Frequently asked questions
Does it work with all block themes?
Yes! Quantum Viewports extends standard block components, so it works with any Block Theme right away.
Does it add new blocks?
No. Quantum Viewports does not create duplicate blocks. It enhances the existing standard block styles with responsive controls.
Can developers extend it?
Yes. Developers can register their own style components using the provided registerRenderer API.
Can I uninstall the plugin without issues?
Yes. You can remove the plugin at any time. Basic style settings will remain.
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
Best Quantum Viewports alternatives
All breakpoints plugins →
FAQ
Quantum Viewports: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 16, 2026
Is Quantum Viewports free?
Yes. Quantum Viewports is free to download and use from the official WordPress.org plugin directory.
Is Quantum Viewports safe to use in 2026?
Quantum Viewports shows warning signs in 2026 — compare the alternatives below before installing. Was last updated 9 months ago, and scores 36/100 on our health check.
How many websites use Quantum Viewports?
Quantum Viewports is active on <10 WordPress websites and has been downloaded 721 times since it launched in October 2025. It was downloaded 59 times in the last 30 days.
Does Quantum Viewports work with WordPress 7.1?
Quantum Viewports is officially tested up to WordPress 6.9.10, while the latest release is 7.1.3. It may still work, but try it on a staging site first.
What PHP version does Quantum Viewports need?
Quantum Viewports requires PHP 8.1 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Quantum Viewports last updated?
The latest version, 0.9.11, was released on January 17, 2026 (9 months ago).
Who makes Quantum Viewports?
Quantum Viewports is developed and maintained by QuantumPress.
What are the best alternatives to Quantum Viewports?
The most popular alternatives to Quantum Viewports are Block Editor Bootstrap Bloc… (1K+ installs), Custom Breakpoints for Elem… (300+ installs) and Bootstrap Blocks for WP Edi… (300+ installs).
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