Rewrite & Translate Instantly Using Powerful AI
The WriteFastly AI Extension enhances your writing and translation experience directly in your browser. Whether you're using Chrome, Firefox, Edge, or even Mozilla on iPad or Android, our extension is designed to work seamlessly across platforms.
🚀 What Does It Do?
WriteFastly AI Extension enables you to:
- Rewrite any selected text with improved clarity and tone.
- Translate content with high accuracy to/from major world languages.
Access AI suggestions right above text input fields or after selecting any text.
Perfect for writers, marketers, students, researchers, and anyone who needs quick, professional-quality results powered by AI.
🧠 Powered by Advanced AI Models
By default, we use our own WriteFastly AI, a unique system that combines multiple cutting-edge models and advanced tools to deliver excellent rewriting and translation quality.
You can also choose from specific industry-leading AI models:
- GPT (ChatGPT)
- Claude (Anthropic)
- Gemini (Google)
- Grok (xAI)
- DeepSeek
- Qwen
- LLaMA (Meta AI)
Select your preferred model from within the extension settings in your browser.
🔧 How to Set It Up
Install the extension from the Chrome Web Store or Firefox Add-ons.
Step 1 :
- Log in to your WriteFastly.com account.
- Get your unique client key:
- Go to: https://writefastly.com/dashboard/user/settings
- Or click your profile icon at the top right > Settings > copy your Client Key.
Step 2 :
- Open the extension settings in your browser.
- Paste your client key, choose your preferred AI model, and you're ready to go!
⚠️ Note: Your API client key will not work unless you verify your email address. Make sure to complete the email verification process from your WriteFastly dashboard.
Usage & Resource Management
Your AI usage is linked to your WriteFastly account.
Whether you're on a Free, Baby, Pro, or Business plan, the extension will consume tokens based on your account’s available resources.
You will be notified when your tokens are about to expire or when your balance is low.
You can upgrade your plan or activate a free trial at any time through your dashboard.
End User License Agreement (EULA)
Copyright © WriteFastly.com
All rights reserved.
This extension is proprietary software developed by WriteFastly AI.
Redistribution, reverse engineering, modification, or commercial use of any part of this extension is strictly prohibited without explicit written permission from the copyright holder.
Unauthorized copying or distribution of this extension or its components is a violation of applicable laws.
Contact: support@writefastly.com
Privacy, Terms, and Security
We care deeply about your data security and privacy:
Single-user usage: Your client key is intended for use by one registered user only. Sharing keys or using the same key across multiple users is strictly prohibited and may result in suspension of access.
Your data is not shared with third parties. We only use data for the AI processing necessary to fulfill your request.
Usage of this extension is subject to our Privacy Policy and Terms of Service.
What Data We Collect and Why
To ensure secure usage, enhance performance, and provide personalized functionality, the WriteFastly AI Extension collects technical metadata necessary for identifying your environment and supporting core features.
📊 Data Collected:
| Category | Description |
|---|---|
| Browser Details | browser_id, browser_name, user_agent |
| Operating System | os_name, navigator_platform |
| Localization | navigator_language, timezone |
| Fingerprint Info | Includes screen_resolution, window_size, and connection_type |
| Extension Metadata | extension_version |
| Network Info | IP address |
Why This Data is Collected:
✅ Security & Fraud Prevention – The IP address helps detect abuse, block suspicious activity, and enforce account limits.
✅ User Experience Optimization – Adapt extension behavior based on browser, OS, and screen type.
✅ Bug Tracking & Debugging – Troubleshoot issues related to device, browser version, or connection type.
✅ Localization & Compatibility – Adjust language, timezone, and layout automatically.
✅ Version Control – Ensure compatibility and prompt updates for outdated versions.
All information is processed in compliance with our Privacy Policy and Terms of Service.
Additional Notes
Compatible with most text input fields, CMS editors, emails, social platforms, Google Docs, blogs, and more.
Our extension is regularly updated to support new browser versions and ensure smooth performance.
Full support for desktop and mobile browsers (where extensions are allowed), including iPad browsers like Mozilla.
Need Help?
For help or questions, visit our support center or contact us directly:
🌐 https://writefastly.com/page/contact-us