Comparison // PII scanner
Looking for a free PII scanner for Windows?
Free PII scanners are tempting, but many upload your files to do the work. Here is how to weigh free options, and what FileSentinel offers for serious scanning.
Free has a price
What "free" often costs
Many free PII scanners are web-based, which means your files, the very ones full of personal data, are uploaded to someone else’s server to be analysed. For sensitive data, that trade is rarely worth it.
Others are scripts that match patterns with no scoring, drowning you in false positives. A scanner is only useful if you can trust both where it runs and what it surfaces.
Weighing the options
Free scanner trade-offs
| Approach | The catch | FileSentinel |
|---|---|---|
| Web-based scanners | Your files are uploaded | Runs on-device, no uploads |
| Regex scripts | No scoring, many false positives | Confidence & severity scoring |
| Text-only tools | Miss data inside images | OCR reads images and scans |
| Detect-only tools | No way to fix findings | Redaction & metadata stripping |
A serious local option
Scan privately, see current pricing
FileSentinel is a local-first PII scanner for Windows: it finds personal data on your own machine, scores it, and helps you clean it, with nothing uploaded. Check the Microsoft Store listing for current pricing and try it for your own files.
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Questions & answers
FAQ
Are free PII scanners safe to use?
It depends where they run. Web-based scanners upload your files, which is risky for personal data. A local scanner that runs on your machine avoids that exposure entirely.
Why do free tools produce so many false positives?
Many just match patterns with no scoring. FileSentinel scores findings by confidence and severity so real PII rises above coincidental matches.
Does FileSentinel upload my files?
No. It scans entirely on your device with no uploads and no cloud.
How much does FileSentinel cost?
See the Microsoft Store listing for current pricing. It is a single Windows app you install in one click.
Get FileSentinel
Free PII Scanner for Windows
Install FileSentinel from the Microsoft Store and scan your files for sensitive data, all on your Windows PC with nothing uploaded.