Privacy Policy
Last Updated: October 24, 2025
Promptimize ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and protect your information when you use the Promptimize Chrome extension.
Information We Collect
1. Prompts You Analyze
- What: The text prompts you choose to analyze using Promptimize
- How: Sent to our server for AI analysis
- Storage: Processed in real-time and NOT permanently stored on our servers
- Purpose: To provide prompt analysis and feedback
2. Usage Information
- What: Anonymous usage statistics (number of analyses, timestamps)
- How: Automatically collected via session ID
- Storage: Stored locally in your browser and temporarily on our servers
- Purpose: To improve the product and understand usage patterns
3. Email Address (Optional)
- What: Your email address (only if you choose to provide it)
- How: You voluntarily enter it in the extension after your 3rd use
- Storage: Stored in ConvertKit (our email service provider)
- Purpose: To send you educational content about prompt engineering
Important: Promptimize works 100% without providing your email. Email is completely optional and only used for our educational newsletter.
How We Use Your Information
Prompts
- Sent to Cerebras AI for analysis
- Analyzed in real-time to provide feedback
- Temporarily stored in memory for analytics (last 1,000 analyses only)
- Automatically cleared when server restarts - not permanently saved to database
- Never shared with third parties except our AI provider (Cerebras)
Email Addresses
- Added to our ConvertKit mailing list
- Used to send weekly educational emails about prompt engineering
- Tagged to identify you as a Promptimize user
- NEVER sold or shared with third parties
- You can unsubscribe anytime
Usage Statistics
- Analyze product performance and usage patterns
- Improve the extension and user experience
- Aggregated and anonymized for reporting
Third-Party Services
We use the following third-party services to provide Promptimize:
Cerebras AI
- Purpose: Analyzes your prompts using AI
- Data Shared: Your prompt text
- Privacy Policy: cerebras.ai/privacy
ConvertKit
- Purpose: Manages our email newsletter
- Data Shared: Your email address (if you subscribe)
- Privacy Policy: convertkit.com/privacy
Railway
Data Storage and Security
Local Storage (Your Browser)
- Usage count, session ID, and analysis history stored locally
- Stored using Chrome's secure storage API
- Only accessible by the Promptimize extension
- Deleted if you uninstall the extension
Server Storage
- Prompts are NOT permanently stored
- Email addresses stored in ConvertKit
- Usage statistics stored temporarily
Security Measures
- All data transmitted over HTTPS encryption
- API keys secured in environment variables
- Rate limiting to prevent abuse
- Input sanitization to prevent attacks
- Regular security audits and updates
Your Rights and Choices
Access and Control
- Email Subscriptions: Unsubscribe anytime via link in emails
- Data Deletion: Request deletion by contacting us
- Data Export: Request a copy of your data
- Opt-Out: Simply don't provide your email
Extension Permissions
Promptimize requests minimal permissions:
- Storage: To save your preferences and usage count locally
- ActiveTab: To access ChatGPT's text input for "Use This Prompt" feature
- Host Access: Only chat.openai.com and chatgpt.com (ChatGPT only)
Data Retention
- Prompts: Temporarily stored in memory (last 1,000 analyses), automatically cleared on server restart, never saved to permanent database
- Email Addresses: Kept until you unsubscribe
- Usage Statistics: Anonymized and retained for product improvement
- Local Browser Data: Kept until you clear extension data or uninstall
Children's Privacy
Promptimize is not directed at children under 13 years of age. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us.
International Users
Promptimize is hosted in the United States. If you are using Promptimize from outside the U.S., your information may be transferred to, stored, and processed in the U.S. By using Promptimize, you consent to this transfer.
Changes to This Policy
We may update this Privacy Policy from time to time. When we make changes, we will update the "Last Updated" date at the top of this page. Continued use of Promptimize after changes constitutes acceptance of the updated policy.
Cookies and Tracking
Promptimize does NOT use cookies or tracking technologies. We do not track your browsing activity outside of your explicit use of the Promptimize button in ChatGPT.
Third-Party Links
This Privacy Policy applies only to Promptimize. We may provide links to third-party services (like Cerebras or ConvertKit), which have their own privacy policies. We are not responsible for the privacy practices of these third parties.
Your California Privacy Rights (CCPA)
If you are a California resident, you have the right to:
- Know what personal information we collect
- Request deletion of your personal information
- Opt-out of the sale of personal information (we do NOT sell data)
GDPR Rights (European Users)
If you are in the EU, you have the right to:
- Access your personal data
- Rectify inaccurate data
- Request erasure of your data
- Object to processing
- Data portability
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