Privacy Policy

1. Information We Collect

We collect the following information:

• Account information: Email address, password (stored as hash)
• Usage data: URLs checked, check results, usage count
• Payment information: Processed via Stripe. We do not store credit card numbers directly
• Access logs: IP address, browser information (for rate limiting free users)

2. Purpose of Use

Collected information is used for the following purposes:

• Providing and operating the SEO check service
• Managing usage limits and plan-based feature control
• Sending SEO report emails (paid plan users)
• Sending account management emails such as password reset
• Service improvement and new feature development
• Preventing unauthorized use

3. Disclosure to Third Parties

We do not provide users' personal information to third parties except in the following cases:

• When the user has given consent
• When required by law
• When necessary for service provision to contracted parties (Stripe, Resend, etc.)

4. External Services Used

• Stripe: Payment processing
• Resend: Email delivery (password reset, report delivery)
• Cloudflare: Hosting, CDN, database
• OpenPageRank: Domain power data retrieval

5. Data Storage

User data is stored in Cloudflare D1 database. Passwords are hashed using the PBKDF2 algorithm and are never stored in plain text.

6. Data Deletion

Users can delete their account at any time from the settings page. Upon account deletion, all user information, check history, and usage data will be deleted. Stripe subscriptions will also be automatically canceled.

7. Security

We implement the following security measures:

• Enforced HTTPS communication
• Password hashing (PBKDF2, 100,000 iterations)
• JWT authentication token expiration management
• CORS configuration to prevent unauthorized cross-origin requests

8. Contact

For privacy-related inquiries, please contact us at the following email address: