# Claude Studio — RTL, Fonts & Themes

> RTL & multilingual support for Claude: 50+ fonts, pro typography, light/dark/black themes, accent colors, and correct math & code.

Canonical page: [https://chrome-stats.com/d/claude-studio](https://chrome-stats.com/d/claude-studio)

## Overview

- **ID:** `claude-studio`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** ILYAGVC
- **Category:** appearance,language-support
- **Daily users:** 11
- **Version:** 1.0.7
- **Last updated:** 2026-06-27
- **First published:** 2026-06-24
- **Size:** 119 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/claude-studio/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/claude-studio/privacy/](https://addons.mozilla.org/firefox/addon/claude-studio/privacy/)

## Description

Make Claude truly yours. Claude Studio restyles <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/749f55679c25c240feed4c33d337c9a6fd364a96bdf82dafdc769bc8883d8fcd/http%3A//claude.ai" rel="nofollow">claude.ai</a> and <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/072126362fa4fd284ac12a7a50977c245aafe576483ca051dc2f8698d4b21fed/http%3A//claude.com" rel="nofollow">claude.com</a> with first-class right-to-left support, beautiful multilingual fonts, professional typography, and rich theming — all from a clean popup with a live preview.

Whether you chat in Persian, Arabic, Hebrew, or Urdu, switch languages mid-conversation, or simply want Claude to look and read better, Claude Studio gives you precise control — without changing anything you don't want to touch.

🌐 Right-to-left, done right
• Full RTL layout for Claude's interface and messages
• "Auto" direction sets each message — even each block — from its own content, perfect for bilingual chats
• Math (KaTeX) and code always stay left-to-right and intact, so nothing breaks
• Localized digits (e.g. ۱۲۳) in conversations and the chat list, while your input and code stay untouched

🔤 Fonts &amp; typography
• 50+ curated fonts, grouped by script — pick separate fonts for body text, headings, and code
• Fine-tune weight, size, line height, letter spacing, word spacing, and paragraph spacing
• Text alignment: right, left, center, or justify
• Limit the reading width for comfortable reading on wide screens

🎨 Themes &amp; colors
• Light, Dark, and a true Black theme
• Set Claude's accent/highlight color and the code-box theme to match your taste

🎯 Precise scope
• Choose exactly what gets styled — Claude's replies, your messages, the composer, and the chat list — each independently

⚙️ Power-user tools
• Save, apply, and manage presets
• Add your own custom CSS
• Export and import all your settings
• Keyboard shortcuts to toggle the extension and open settings
• A 25-language interface with a live preview of every change

🔒 Private by design
• No accounts, no tracking, no data collection — your settings stay in your browser. (Fonts load on demand from Google Fonts.)

💻 Open source
• Free and open source — view the code, report issues, or contribute on GitHub: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/35e94a3073aed31b0769b18fb1fc6c215be107f76f35ece047295a706971425b/https%3A//github.com/ILYAGVC/Claude-Studio" rel="nofollow">https://github.com/ILYAGVC/Claude-Studio</a> (MIT License).

———
Claude Studio is an independent, unofficial extension. It is not affiliated with, endorsed by, or sponsored by Anthropic. "Claude" is a trademark of Anthropic.

## Rankings

- #31,987 — Overall
- #50 — student
- #76 — claude
- #88 — claude ai
- #120 — font
- #166 — study

## Permissions and access

### Permissions

- `storage`
- `scripting`

### Host permissions

- `*://claude.ai/*`
- `*://*.claude.ai/*`
- `*://claude.com/*`
- `*://*.claude.com/*`

### Content script matches

- `claude.ai`
- `*.claude.ai`
- `claude.com`
- `*.claude.com`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Claude RTL Toolkit](https://chrome-stats.com/d/claude-rtl-toolkit) — 3 users, 5.00 / 5
- [Claude RTL – Hebrew & Arabic Support](https://chrome-stats.com/d/claude-rtl-hebrew-arabic) — 361 users, 4.20 / 5
- [Locstars-Claude-RTL](https://chrome-stats.com/d/locstars-claude-rtl) — 1 users
- [Claude RTL Pro by FireXCore](https://chrome-stats.com/d/claude-rtl-pro-by-firexcore)
- [Claude RTL](https://chrome-stats.com/d/claude-rtl) — 246 users, 5.00 / 5
- [Claude RTL Responder](https://chrome-stats.com/d/claude-rtl-responder) — 415 users, 5.00 / 5
- [Better Claude](https://chrome-stats.com/d/better-claude) — 1 users
- [Claude RTL Helper](https://chrome-stats.com/d/claude-rtl-helper) — 32 users
- [Claude RTL](https://chrome-stats.com/d/claude-smart-rtl) — 12 users, 5.00 / 5
- [Claude RTL (Persian & Arabic)](https://chrome-stats.com/d/claude-rtl-persian-arabic) — 3 users
- [Claude RTL Fix](https://chrome-stats.com/d/claude-rtl-fix) — 95 users
- [RTL for Claude](https://chrome-stats.com/d/rtl-for-claude) — 6 users, 5.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/claude-studio)