Privacy Policy
Last Updated: March 2026
100% Client-Side Processing
CSV Tabs is designed around a strict zero-upload architecture. All file parsing, data conversions, and Excel file generations happen directly inside your browser. No files, spreadsheet cells, metadata, or table contents are ever sent to a server. Your data never leaves your local computer.
What Information We Collect
Because our conversion tool runs entirely client-side using JavaScript libraries (PapaParse and SheetJS), we do not collect, store, or process any of the personal or proprietary data contained within your uploaded CSV files.
We do collect minor website telemetry to help us understand usage and improve the application:
- Basic Telemetry: We use Vercel Analytics to track generic user interaction events (like page views, conversion success/errors, and the number of files combined). This telemetry does not contain personal information, IP addresses, or the names and contents of your files.
- Local Settings: Your filename preference is kept in temporary memory while the browser tab is open and is not persisted.
Third-Party Libraries
Our conversion tool utilizes the following standard open-source JavaScript packages:
- PapaParse: Used for fast CSV file parsing in the browser.
- SheetJS (XLSX): Used for formatting and building the downloadable Excel file.
These libraries run completely offline in the context of your browser tab and do not contact external endpoints during execution.
Security Practices
Because CSV Tabs is a static client-side application served over secure HTTPS:
- Your browser guarantees that the site assets cannot be intercepted or tampered with in transit.
- There is no backend database that could be compromised, meaning there is zero risk of a database data breach.
- You can safely use this tool to compile sensitive client reports, financial data, or proprietary lists.
Contact Us
If you have any questions or feedback regarding this privacy policy or the tool's execution model, feel free to contact the author via GitHub.