A comprehensive Zen Browser mod that transforms the main content area with refined geometry, elegant borders, advanced content clipping, and smooth loading animations—all while maintaining optimal GPU performance.
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- Rounded corners - Clean 8px border radius on the main content container
- Subtle border - Elegant semi-transparent border (15% opacity) that adapts to themes
- Depth shadow - Dark exterior shadow for elegant depth and relief effect
- Native mica/acrylic - Preserves Zen Browser's native transparency effect for modern aesthetic
- Refined spacing - Optimized margins with subtle left offset for better visual balance
- Theme integration - Automatically adapts to Zen Browser's theme colors
- Zero overflow - Multi-layer clipping system with clip-path applied at each level prevents content from spilling beyond rounded borders
- Border preservation - Unique wrapper architecture keeps borders visible while clipping content internally
- Render stability - Multiple clip-paths ensure content remains contained during initial page render, preventing brief overflow flashes
- Smart full-screen - Intelligently differentiates between content full-screen (videos) and browser F11 mode, removing effects only for media content
- Smooth loading mask - Elegant overlay that fades out when content is ready (0.12s transition)
- Shimmer effect - Subtle animated gradient during page loading for visual feedback
- Background tab optimization - Disabled transitions for inactive tabs to save resources
- Reduced GPU layers - Optimized from 7 to 3 essential GPU layers (57% reduction)
- Efficient rendering - Removed expensive SVG masks and unnecessary transforms
- Content visibility - Smart rendering hints for better browser performance
- Balanced approach - Multi-level clip-paths maintained for visual stability during render, ensuring zero overflow at all times
The mod uses a sophisticated multi-layer clipping approach:
- Outer wrapper (
#tabbrowser-tabpanels) - Draws the visible border without clipping - Primary clipping layer (
::beforepseudo-element) - Main clipping boundary - Secondary clipping layers - Additional clip-paths applied at each container level (
#webext-panels-stack,.browserContainer,browser[type="content"],#appcontent deck)
This multi-level approach ensures borders remain visible while content is perfectly contained at all times, including during initial page render when content might otherwise briefly overflow.
All visual properties are controlled via CSS variables:
--zen-content-radius: Border radius (default: 8px)--zen-content-margin: Container margin (default: 2px)--zen-border-color: Border color (default: rgba(255, 255, 255, 0.15))--zen-border-width: Border width (default: 1px)--zen-shadow-color: Shadow color (default: rgba(0, 0, 0, 0.25))--zen-shadow-blur: Shadow blur radius (default: 8px)--zen-shadow-spread: Shadow spread (default: 4px)--zen-shadow-offset-y: Shadow vertical offset (default: 2px)
Enable the mod directly from the Zen Mods Store.
Tested with latest Zen Browser builds. Fully compatible with all Zen Browser themes.
- GPU Usage: Optimized
- Memory: Minimal overhead with smart containment strategies
- Rendering: Multi-level clipping ensures visual stability, reduced GPU layers maintain performance
MIT