Privacy data analytics means analyzing sensitive datasets without exposing them to third-party servers. QueryVeil processes everything in your browser using DuckDB WebAssembly and optional local AI. Your files never leave your device.
Privacy data analytics is the practice of extracting insights from data while keeping that data under the owner's control. Instead of uploading files to cloud servers, processing happens locally on the user's device.
Upload your CSV to ChatGPT, Google Sheets, or a BI tool. Your data sits on someone else's server, potentially used for model training or accessible to third parties.
Use tools with privacy policies that promise not to store data. Better, but still requires trust — your files still transit through their infrastructure.
Process data entirely in the browser. The AI only sees schema metadata (column names and types), never raw data. Verifiable via DevTools. This is what QueryVeil does.
QueryVeil isn't just "private by policy." It's architecturally impossible for your data to leave your browser unless you explicitly choose deep analysis mode.
Drop a CSV, Excel, JSON, or Parquet file. It loads into DuckDB WebAssembly — an in-browser SQL engine. Zero network requests. The file is read by JavaScript's File API and never transmitted.
QueryVeil reads column names, data types, and lightweight statistics (value ranges, top categories). This metadata helps the AI write accurate SQL. No individual rows are included.
Your question and schema metadata are sent to the AI model. The AI returns a SQL query. In Quick Query mode, no data rows leave your browser. In Deep Analysis mode, capped query results (max 100 rows) are shared for multi-step reasoning.
The generated SQL runs against your local DuckDB instance in the browser. Results are rendered directly in the UI. No data round-trip to any server.
See how privacy-first analytics compares to uploading your data to cloud services.
| Privacy aspect | QueryVeil | ChatGPT | Google Sheets |
|---|---|---|---|
| Data processed locally | |||
| Files never uploaded | |||
| AI sees schema only (Quick mode) | |||
| Fully offline option | |||
| Verifiable privacy (DevTools) | |||
| No account required | |||
| GDPR-aligned by architecture | Policy only | Policy only | |
| Data not used for training | Paid only | Policy |
Detailed comparisons: vs ChatGPT · vs Claude · vs Google Sheets AI
Any professional handling sensitive data benefits from privacy-first analytics.
Analyze patient data, clinical trial results, and hospital operations without exposing protected health information (PHI) to cloud services.
Run analysis on transaction data, portfolio performance, and risk models. Keep client financial data off third-party servers.
Analyze case data, billing records, and discovery documents. Maintain attorney-client privilege without data exposure.
Work with client data under NDA without compliance risk. Everything stays in your browser — tell your clients exactly how it works.
The GDPR requires organizations to minimize data transfers and protect personal data. QueryVeil's architecture supports this by default: files never leave the browser, the AI only sees schema metadata, and Zero Cloud Mode eliminates all external network requests.
AI sees column names and types only. No individual records are transmitted in standard mode.
In Zero Cloud Mode, all processing happens on-device. No data crosses borders or enters third-party infrastructure.
Open DevTools and inspect network traffic. Every request is visible. No hidden data exfiltration.
Try QueryVeil with sample data — no signup, no upload. Open DevTools and verify that nothing leaves your browser.