Chrome & Firefox Extensions

ToneClone Browser Extension: Write in Your Voice, Anywhere You Browse

Works on any website with text input. Access your AI personas from Gmail, Twitter, LinkedIn, forums, help desks, CRMs, and 1000+ other sites.

Install for Chrome

Install for Firefox

Why use the ToneClone browser extension

Write in your voice without leaving your browser

Universal Compatibility

Works on any website with text input. From Gmail and Twitter to forums, help desks, and CRMs—if there's a textarea, ToneClone works.

Smart Sidebar

Press Ctrl+Shift+T (Cmd+Shift+T on Mac) to open the full writing sidebar anywhere. No context switching, no copy-pasting—just write.

Context Extraction

Use @extractors to pull in email threads, selected text, URLs, and page content. AI that understands what you're responding to.

Install ToneClone for Your Browser

Available on Chrome, Firefox, Edge, Brave, and other Chromium browsers

Install from Chrome Web Store

One-click installation from the official Chrome Web Store

Install for Chrome

Also works on Edge, Brave, Opera, and other Chromium browsers

Install from Firefox Add-ons

Official extension from Mozilla Add-ons store

Install for Firefox

Official Mozilla-approved extension

Quick Start Guide

Install the Extension

Click the install button above for your browser and follow the prompts

Login with Your ToneClone Account

Click the extension icon and log in with your ToneClone account credentials

Start Writing

Navigate to any website, type in a textarea, click the ToneClone button or press Ctrl+Shift+T

Everything you need, right in your browser

Powerful AI writing features accessible from any website

Write on Any Website

The ToneClone button appears next to text fields on any site. Click it or type your prompt and press Ctrl+Shift+E (Cmd+Shift+E on Mac) to instantly execute and stream AI-generated content in your currently selected persona—no copy-pasting required.

Works on every website with text input
Ctrl+Shift+E hotkey executes your prompt instantly
Streams response directly into textarea
Writes in your currently selected persona

Full-Featured Writing Sidebar

Press Ctrl+Shift+T (Cmd+Shift+T on Mac) to open the sidebar anywhere. Full writing interface with personas, knowledge cards, quick actions, and document history.

Keyboard-first workflow for speed
Quick actions: shorter, longer, professional, casual
Access personas and knowledge cards

Enhanced Gmail Support

Compose emails with full thread context. ToneClone automatically understands the conversation history and helps you draft replies in your voice.

Automatic thread context extraction
Smart reply suggestions
Add emails to training data

Manage Personas & Configuration

Configure your API key, switch between personas, enable/disable features, and customize your writing experience.

Easy API key management
Persona switching and configuration
Flexible feature controls

Quick Access Popup

Click the extension icon for quick access to settings, persona switching, and common actions. Check your status at a glance.

One-click access to settings
Quick persona switching
Status and connection info

Multiple Writing Actions

Dropdown menu with various writing actions: compose, refine, summarize, and more. Context-aware options for different use cases.

Flexible workflows for any situation
Quick actions: compose, refine, summarize
Smart suggestions based on context

Works everywhere you write

ToneClone integrates seamlessly with your favorite websites and tools

Featured: Gmail Integration

Enhanced email support: Full thread context extraction, smart replies, compose emails directly in Gmail, summarize conversations, and add emails to training data. The most powerful email writing experience.

Social Media

Twitter/X, LinkedIn: Write tweets, posts, and messages that maintain your authentic voice and engage your audience effectively.

Developer Tools

GitHub: Write pull request descriptions, issue comments, and documentation that match your project's communication style.

Communication Platforms

Google Voice, Slack: Respond to messages and collaborate with your team while maintaining consistent, natural communication.

Universal compatibility: Works on forums, help desks (Zendesk, Intercom), CRMs (Salesforce, HubSpot), project management tools, note-taking apps, and 1000+ other websites.

Perfect for your workflow

Real-world scenarios where ToneClone browser extension shines

Email Composition

Gmail integration and beyond: Draft professional emails faster with thread context awareness. Maintain consistent tone across all your correspondence. Perfect for busy professionals managing high email volumes.

Social Media Management

LinkedIn, Twitter, and more: Write posts and tweets that maintain your brand voice. Quick drafts without context switching. Ideal for marketers and content creators managing multiple platforms.

Customer Support

Help desks and CRM systems: Respond to customers with consistent, professional replies. Works in Zendesk, Intercom, Salesforce, HubSpot, and more. Great for support teams maintaining quality at scale.

Documentation & Content

GitHub, wikis, and forums: Write documentation, README files, and community posts that match your project's voice. Perfect for technical writers and developers maintaining consistent documentation.

Privacy & Security

Your data security is our priority. The ToneClone extension is built with privacy in mind.

API Key Authentication

No passwords stored, secure key-based access

Secure Processing

All data processed through secure ToneClone API

Shadow DOM Isolation

Prevents conflicts with other extensions

Clear Permissions

Only requests necessary permissions

Ready to Write in Your Voice, Everywhere?

Install the extension and bring AI writing to every website you use.

Install for Chrome

Install for Firefox Try ToneClone Free

Works on Chrome, Firefox, Edge, Brave • Free trial available • 1000+ supported websites