How to Redact Sensitive Information in Screenshots on Mac (2026)
Redact emails, account IDs, credit cards, and PII from Mac screenshots in seconds with Pizazoo. Free, on-device, non-destructive. Step-by-step guide.
Screenshots leak more than people realise. Email addresses in browser tabs. Account IDs in URLs. Credit card numbers on receipts. Faces in Slack avatars. Personal addresses in delivery confirmations. Most of this gets shared with no second thought.
Here’s how to redact it properly on Mac.
Use solid block, not blur, for real secrets
Blur and pixelate are reversible by modern image-recovery tools. If something is genuinely sensitive — credentials, card numbers, full PII — use a solid block, not blur. Pizazoo defaults auto-redact-PII to solid block for this reason.
Step-by-step
Step 1 — Open the screenshot in Pizazoo
Find the screenshot in your Pizazoo library and press Return (or click Edit). The markup editor opens non-destructively, so the original is preserved.
Step 2 — Pick the Redact tool
Choose Redact (solid black block) from the markup toolbar.
For automatic coverage, click Auto-redact PII — Pizazoo uses Apple Vision and NLP to detect emails, phone numbers, and credit-card-shaped digit strings, all on-device.
Step 3 — Drag over the sensitive region
Drag a rectangle across the area you want to hide. Resize or delete the redaction anytime — it’s a non-destructive layer, not a destroyed pixel block.
Step 4 — Save or share
Press Save to write the redacted version into your library beside the original, or use Share to send it via Mail, Messages, or any macOS share target. The original stays untouched.
What Pizazoo redacts automatically
- Email addresses
- Phone numbers (most international formats)
- Credit-card-shaped digit strings (13–19 digits)
- QR codes (with the QR auto-blur tool)
For everything else — names, account IDs, faces — use a manual redact.
Privacy guarantee
All redaction runs on your Mac via Apple’s on-device Vision and NLP frameworks. No image, no text, no metadata is uploaded.