Privacy Policy

Excel Change Log ("we", "us", "our") operates the Excel Change Log website and service. This page informs you of our policies regarding the collection, use, and disclosure of personal information when you use our service.

Information We Collect

When you create an account, we collect your email address and password (stored securely using industry-standard hashing). When you use our service, we collect:

Excel files you upload for comparison (processed and stored temporarily)
Comparison results and change logs you generate
Usage data such as number of comparisons, feature usage, and session information
Payment information if you subscribe to a paid plan (processed by Stripe; we do not store your card details)

How We Use Your Information

We use the information we collect to:

Provide, maintain, and improve the Excel Change Log service
Process your Excel file comparisons and generate change logs
Manage your account and process payments
Send you service-related emails (account confirmation, password resets, billing receipts)
Monitor usage to prevent abuse and enforce our terms

File Handling & Data Privacy

Your Excel files are uploaded over an encrypted connection (TLS/SSL). Files are processed on our servers to perform the comparison and are stored temporarily to allow you to view results. We do not sell, share, or use the contents of your files for any purpose other than providing the comparison service to you.

If you use our AI-powered analysis feature, a sanitized summary of changes (not your raw file data) may be sent to a third-party AI provider to generate the analysis. You can control the privacy level of AI analysis in the comparison settings.

Sharing & Shared Links

When you create a shareable link for a comparison, anyone with that link can view the comparison results in read-only mode. You can revoke shared links at any time. We do not publicly list or index shared comparison links.

Cookies

We use essential cookies to keep you logged in and maintain your session. We also use Google Analytics (Google tag) to understand how the website is used. Google may set cookies such as _ga to distinguish visitors. We do not use third-party advertising cookies.

Third-Party Services

We use the following third-party services:

Stripe for payment processing
Google Analytics for website usage measurement
Cloud hosting providers for infrastructure
AI providers for optional AI-powered analysis (with sanitized data only)

These providers have their own privacy policies and we encourage you to review them.

Data Retention

We retain your account information for as long as your account is active. While you have an active paid subscription, uploaded source files and comparison history are kept for service provision (subject to abuse and security controls). Demo uploads are ephemeral. If your account becomes inactive for twelve consecutive months after any paid subscription ends, we may delete your account and associated data after at least thirty days' email notice, as described in our Terms of Service. You can request deletion of your account and all associated data at any time by contacting us.

Security

We take reasonable measures to protect your information, including encryption in transit (TLS/SSL), secure password hashing, and access controls on our infrastructure. However, no method of transmission or storage is 100% secure, and we cannot guarantee absolute security.

Your Rights

You have the right to:

Access the personal information we hold about you
Request correction of inaccurate information
Request deletion of your account and data
Export your comparison data

Changes to This Policy

We may update this privacy policy from time to time. We will notify you of significant changes by posting a notice on our website or sending you an email. Your continued use of the service after changes are posted constitutes your acceptance of the updated policy.

Contact Us

If you have any questions about this privacy policy, please contact us at support@excelchangelog.com.