Free Tool

Data Prep & PII Scanner

Drop in your CSV before our session. This tool scans for personally identifiable information, flags risky columns, and produces a redacted version — all in your browser. Nothing is uploaded or sent anywhere.

Runs 100% locally in your browser — no server, no upload, no logging
Step 1 — Upload

Scan Your File

Drop a CSV file. The scanner checks every column for common PII patterns and flags what it finds.

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Click to choose a CSV or drag and drop here

CSV files only · Processed locally

Step 2 — Review & Redact

Findings

Review what was found. Then download a redacted version safe to share in your session.

Scan Results
Upload a CSV and run a scan to see results here.

For Power Users

Python Script Download

Prefer to run this on large files or automate it in a pipeline? Download the standalone Python script. Works on CSV and Excel files. Requires Python 3.8+ and pandas.

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neutrino_pii_scanner.py

Scans CSV/XLSX for PII, outputs a report and a redacted file. Safe to integrate into any data pipeline.

Requires: Python 3.8+, pandas, openpyxl (for Excel) — install with pip install pandas openpyxl