Last Updated: 2026. FinTools.in is built from the ground up on a strict "Zero-Knowledge In-Browser Compute" model.
We cannot sell, leak, or share your data because we never receive it.
Unlike conventional web calculators and cloud-based file tools, FinTools does not transmit, store, or log any of the following:
All computations are performed locally using client-side JavaScript, WebAssembly (WASM), and the W3C WebCrypto API. When you merge, split, compress, or convert a PDF, the binary data remains isolated within your browser’s allocated memory sandbox. When the browser tab is closed, that volatile memory is completely discarded.
When upgrading to FinTools Pro or CA subscriptions, payments are handled directly by Razorpay Software Private Limited via their certified PCI-DSS Level 1 compliant gateway. FinTools never has access to, nor retains, your full card numbers, CVVs, or Net Banking credentials.
If you choose to save custom calculation bookmarks or custom themes, they are stored exclusively inside your browser’s localStorage. You may wipe this data at any moment using our one-click Purge tool below:
For privacy audits, enterprise inquiries, or compliance declarations, contact our founder at: