Privacy Policy

Last Updated: October 2026

1. Core Privacy Philosophy: Client-Side Processing

ToolStackly operates on a strict zero-server data principle. All operations (including PDF merging, signature placement, image compression, financial calculations, and invoice rendering) occur directly inside your web browser’s memory using client-side JavaScript, WebAssembly, and HTML5 APIs.

Zero Upload Guarantee: Your documents, photographs, signatures, and personal financial data are never uploaded, transferred, or stored on our servers.

2. Information Collection & Google Authentication

We do not collect or store your processed files. If you choose to sign in with Google or upgrade to ToolStackly Pro, we receive standard profile information (your name, email address, and profile picture avatar) provided securely through Google OAuth / Firebase Authentication. This information is used exclusively to:

Authenticate your session and associate your active Pro subscription status.
Enable convenient account personalization across tool visits.
We never sell, rent, or monetize your personal account credentials or contact details.

3. Third-Party Advertising & Cookies (Google AdSense)

For free-tier visitors, we may display contextual third-party advertisements provided by Google AdSense and accredited advertising networks to maintain free access.

Third-party vendors, including Google, use cookies to serve ads based on prior visits to this website or other websites.
Google's use of advertising cookies enables it and its partners to serve ads based on your visit to our sites and/or other sites on the Internet.
Users may opt out of personalized advertising by visiting Google Ads Settings.
Subscribers to ToolStackly Pro enjoy a 100% ad-free experience across all 22 tools.

4. ToolStackly Pro Subscriptions & Payments

Paid upgrades to ToolStackly Pro remove document watermarks and third-party advertising. All payments are handled by certified, PCI-compliant third-party merchant platforms (such as Lemon Squeezy, Stripe, or Razorpay). ToolStackly does not process, store, or have access to your credit card or sensitive billing information.

5. Contact Information

If you have any questions or data inquiries regarding this Privacy Policy, please contact our team directly at: roshanbalaji9@gmail.com.