---
title: Interface Appearance
description: >-
  Customize LobeHub's look — theme, colors, language, code highlighting, and
  Mermaid diagrams. Make it yours.
tags:
  - LobeHub
  - Appearance
  - Theme
  - Language
  - Customization
---

# Interface Appearance

Appearance settings let you customize how LobeHub looks and feels. Switch themes, pick accent colors, set the default language for Agent responses, and tune code and diagram styling. All visual-related options are grouped here.

**How to access:** Click your user avatar in the top-right corner → **App Settings** → **Appearance**.

## Language

Switch the interface language. LobeHub supports multiple locales — choose the one that fits your workflow.

## Theme Mode

Three options:

| Mode              | Best For                                   |
| ----------------- | ------------------------------------------ |
| **Light**         | Bright environments, daytime use           |
| **Dark**          | Low-light environments, reduced eye strain |
| **Follow System** | Match your OS preference (default)         |

**Follow System** automatically switches between light and dark based on your operating system setting. Useful if you use LobeHub across different times of day or environments.

## Theme Colors

Beyond light and dark, you can set an **accent color** — the color used for buttons, highlights, links, and other interactive elements. LobeHub offers preset theme and neutral colors. Click a swatch to apply it; the interface updates immediately.

**Use cases:** Match your brand, reduce visual clutter with a neutral palette, or pick a color that helps you focus.

## Agent Language

Set the **default language for Agent responses**. Once selected, Agents will prioritize replying in that language unless you explicitly request another in the conversation.

**Example:** If you set "Chinese," the Agent will reply in Chinese by default. You can still say "Reply in English" for a specific message.

## Code Highlighting

When your conversation or document includes code blocks, you can choose a **syntax highlighting theme**. Choose one that complements your overall theme — light themes pair well with light code themes, dark with dark.

**Use cases:** Improve readability during code reviews, match your IDE's color scheme for consistency, or reduce eye strain in long coding sessions.

## Mermaid Theme

Mermaid is a text-based diagram tool. When your conversation or document includes Mermaid diagrams (flowcharts, sequence diagrams, etc.), you can choose a **Mermaid theme** for them. Align it with your overall theme so diagrams look consistent with the rest of the interface.

## Mode Selection

| Mode                  | Description                                                                          |
| --------------------- | ------------------------------------------------------------------------------------ |
| **Professional Mode** | Full interface with all panels and options — best for power users                    |
| **Simplified Mode**   | Streamlined interface with fewer elements — best for focused work or smaller screens |

**Tip:** Use Simplified Mode when you want less visual noise and more space for the conversation. Switch to Professional Mode when you need quick access to panels, settings, or multiple views.

<Cards>
  <Card href={'/docs/usage/user-interface/shortcuts'} title={'Keyboard Shortcuts'} />

  <Card href={'/docs/usage/agent/translate'} title={'Conversation Translation'} />
</Cards>
