Help & support.
Redaction you can prove — and nothing leaves your Mac. Here's how to get help with it.
Email a human.
direct · no ticket queueEmail us about anything — a bug, a false-negative you saw, or a feature request. Because Silo Redact runs entirely on your Mac, please don't attach the source document; the verification-report summary is usually enough for us to help.
Email support ↵The short answers.
privacy · verification · detectionNo. Detection, burn-out, and verification all run on your Mac — no cloud service is in the loop. There is no account and no telemetry. The only optional network event is a single consent-gated model download for the contextual detection tier, which you can decline and still get every core redaction feature.
Because PDF redactions done in general-purpose tools have repeatedly leaked when the underlying text or metadata survived. Silo Redact re-checks its own output, refuses to certify a file that still contains the data it was told to remove, and ships a verification report so you can prove the redaction held.
Common pattern-based sensitive data (SSNs, phone numbers, email addresses, credit-card numbers, dates), form-field values, OCR-recovered text from scanned pages, and named entities (people, orgs, places). The pattern, form-field, OCR, and name detectors work fully offline out of the box.
A contextual detection tier that catches things the pattern and named-entity detectors miss — for example, a client identifier that isn't a pattern or a common name. It downloads once with your consent, and you can decline it; core redaction ships fully functional without it.
Yes. Silo Redact removes document metadata (author, revision history, embedded thumbnails, XMP) alongside the burn-out pass, so the sanitized PDF doesn't leak information the visible page never showed.
An Apple Silicon Mac (M1 or newer) running macOS 14 (Sonoma) or later.
Silo Redact is a one-time purchase of $39.99 on the Mac App Store. No subscription and no in-app purchases.