---
title: "Custom Browser Compatibility"
description: "Essence Ghost theme browser support. Shaders, Glass cards and the page intro work in Chrome, Firefox, Safari and Edge. Liquid glass needs Chrome or Edge."
url: "https://www.priority.vision/docs/essence/custom-browser-compatibility"
scope: theme
appliesTo: [Essence]
lastUpdated: 2026-10-01
---

# Browser Compatibility

Essence uses modern browser APIs for its visual effects. Most features work across current browsers; liquid glass is the main exception.

## Feature support

| Feature | Chrome | Firefox | Safari | Edge |
|---------|--------|---------|--------|------|
| Shader backgrounds | ✅ | ✅ | ✅ | ✅ |
| Liquid glass cards | ✅ | ❌ fallback | ❌ fallback | ✅ |
| Glass cards | ✅ | ✅ | ✅ | ✅ |
| Page intro animation | ✅ | ✅ | ✅ | ✅ |
| PVS SPA navigation | ✅ | ✅ | ✅ | ✅ |

## Liquid glass

The **Liquid** card style uses SVG `backdrop-filter` with a custom refraction filter. Only Chromium-based browsers support this API.

When liquid glass is unavailable, Essence **automatically falls back to Glass** — frosted backdrop blur without refraction. The site remains fully usable; only the refractive effect is lost.

See [Liquid Glass Fallback](/docs/essence/troubleshooting-liquid-glass-fallback/) for details.

## WebGL shader backgrounds

Shader backgrounds require WebGL. All major desktop and mobile browsers support WebGL when hardware acceleration is enabled.

If WebGL is unavailable or fails to initialize:

- The shader canvas may not render (dark background visible instead)
- Switch **Background style** to **Image** for a reliable static fallback

## Glass and solid cards

**Glass** uses standard `backdrop-filter` blur, supported in all modern browsers.

**Solid** cards use only CSS backgrounds — no special browser requirements.

## Reduced motion

Visitors with **prefers-reduced-motion: reduce** enabled get a simplified experience: no cinematic page intro, static shader frames, and static film grain. See [Reduced Motion](/docs/essence/custom-reduced-motion/).

## Documentation Index
> Fetch the complete documentation index at: https://www.priority.vision/docs/essence/llms.txt
> Use this file to discover all available pages before exploring further.