Jellyfin Custom CSS 2026: Ultrachromic, KefinTweaks, Netflix Theme & 15+ Snippets (Complete Guide)

Jellyfin Custom CSS Guide (2026): Netflix Theme, Snippets & Skin Customization

Jellyfin's default interface is clean and functional but with a few lines of CSS, you can transform it into something that looks like Netflix, Disney+, or a completely custom streaming platform.

This guide covers every method: the Skin Manager plugin for one-click themes, manual CSS injection for precise control, and 15+ ready-to-use snippets you can paste directly into your dashboard.

How Jellyfin CSS Customization Works

Jellyfin lets you inject custom CSS directly from the admin dashboard. The CSS applies globally to all users on your server no plugin required for basic customization.

Two methods:

1. Skin Manager plugin one-click theme installer (recommended for full themes)
2. Dashboard Custom CSS paste CSS directly (recommended for tweaks and snippets)

Both methods can be used simultaneously. The Skin Manager applies a base theme; your dashboard CSS adds overrides on top.

Method 1: Skin Manager Plugin (One-Click Themes)

The Skin Manager plugin gives you a graphical interface to install and switch community themes without touching CSS manually.

Install Skin Manager

1. Dashboard → Plugins → Repositories → Add:
   • Name: Awesome Jellyfin
   • URL: https://raw.githubusercontent.com/awesome-jellyfin/awesome-jellyfin/main/catalog.json
2. Dashboard → Plugins → Catalog → search Skin Manager → Install
3. Restart Jellyfin

Add theme repositories

Open Dashboard → Skin Manager → Add Repository:

Click Apply on any theme it takes effect immediately, no restart needed.

Method 2: Manual CSS Injection

For precise control or small tweaks, inject CSS directly:

Dashboard → General → Custom CSS Code → paste your CSS → Save

Changes apply instantly on the next page load.

The Best Jellyfin Themes in 2026

JellyFlix The Netflix Look

The most popular Jellyfin theme. Red accents, bold typography, full-width hero banners your library feels like Netflix.

Install via Skin Manager or paste the CSS from github.com/prayag17/JellyFlix.

Key features:

• Netflix-style hero section on the home page
• Red #E50914 primary color
• Improved card hover effects with smooth animations
• Cleaner top navigation bar

Ultrachromic Vibrant and Cinematic

The most actively maintained community theme. Dark background, vivid accent colors, cinematic poster display.

Available in multiple color variants: Default, Colorful, Monochrome, and more.

Install via Skin Manager → search Ultrachromic.

Monochrome Minimal OLED

Pure black backgrounds, no color distractions. Perfect for OLED displays and users who want content to take center stage.

Install via Skin Manager → search Monochrome.

Finnergie (Scyfin) Modern Cards

A light/dark theme with a modern card-based layout. Good for users who prefer a brighter, more spacious interface.

15+ Ready-to-Use CSS Snippets

Paste any of these into Dashboard → General → Custom CSS Code.

Change the accent color

:root {
    --accent: #E50914;  /* Netflix red */
}

Other popular colors:

• #0071EB Disney+ blue
• #1DB954 Spotify green
• #FF6B35 warm orange

Hide the Live TV tab

.lnkMyMediaTab[href^="livetv"] {
    display: none !important;
}

Hide the Browse tab

.lnkMyMediaTab[href^="explore"] {
    display: none !important;
}

Make posters larger on the home screen

.card {
    font-size: 1.1vw !important;
}

Increase backdrop blur intensity

.backdropContainer {
    filter: blur(20px) !important;
}

Round card corners more aggressively

.card .cardContent {
    border-radius: 12px !important;
}

Hide the Jellyfin logo in the top bar

.headerLogo {
    display: none !important;
}

Dark scrollbar

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #111; }
::-webkit-scrollbar-thumb { background: #444; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #666; }

OLED pure black background

.backgroundContainer,
.backdropContainer,
body {
    background: #000000 !important;
}

Compact view smaller cards

.card {
    font-size: 0.8vw !important;
}

Highlight currently playing item

.card.playing .cardContent {
    border: 2px solid var(--accent) !important;
    box-shadow: 0 0 12px var(--accent) !important;
}

Make the sidebar always visible

.mainDrawer {
    transform: none !important;
    visibility: visible !important;
}

Combining Skin Manager + Custom CSS

The most powerful setup: apply a full theme via Skin Manager, then add your own tweaks on top.

Example: Apply Ultrachromic via Skin Manager, then add this to Dashboard CSS to change the accent to blue:

:root {
    --accent: #0071EB;
}

Your custom CSS always overrides the theme no conflicts.

Per-User CSS (Advanced)

Want different themes for different users? Each user can set their own CSS:

User Settings → Display → Custom CSS

This overrides the server-wide CSS for that user only.

CSS Troubleshooting

Changes not applying?

• Hard refresh: Ctrl + Shift + R (Windows/Linux) or Cmd + Shift + R (Mac)
• Clear browser cache
• Check for syntax errors a missing ; or } breaks all CSS below it

Theme looks broken after Jellyfin update?

• Community themes may need updates after major Jellyfin releases
• Check the theme's GitHub repository for compatibility notes

CSS works in browser but not on TV app?

• Custom CSS only applies to the Jellyfin web interface
• Android TV, iOS, and other native clients do not load web CSS

Theme Comparison

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