Since 2024 · The original native Mac redaction app
Redact Screenshots on Mac — Automatically
BlurData scans every screenshot for emails, names, addresses, phone numbers and IPs, then blurs or blacks them out in seconds. Native macOS. 100% offline. No more manually dragging black boxes one at a time before posting on Slack or X.
Try free for 7 days See how it worksThe fastest way to redact a screenshot on Mac
You took a screenshot of your inbox, your dashboard, your terminal, your billing page. There's an email in the corner, a name in the sidebar, an IP in the log, an API key in the URL bar. You want to share it in Slack, X, a bug report, a blog post. The traditional workflow: open Preview, zoom in, drag a black rectangle, drag another, drag another. Miss one. Repost. Apologize.
BlurData does it for you. Drop the screenshot, watch every piece of sensitive data get highlighted, click export. Done.
9 PII types detected
Emails, full names, phone numbers, addresses, IP addresses, URLs, monetary values, account numbers and license plates — all detected in one pass.
Custom regex patterns
Add your own patterns for project-specific identifiers: internal user IDs, JWT tokens, API keys, ticket numbers, employee codes.
Choose blur, pixelate or solid
Pick the redaction style that fits the context — blur for friendly screenshots, solid black for legal-grade hiding.
How to auto-redact a screenshot on Mac
Capture a screenshot however you like
Use Cmd+Shift+4, CleanShot X, Xnapper, Shottr — anything. BlurData accepts any PNG or JPG.
Drop it into BlurData
The app scans the image with on-device OCR and highlights every detected PII match. Review categories with one click.
Export the safe version
Save the redacted PNG to disk, or copy to clipboard and paste straight into Slack, X, GitHub, Notion — wherever it needs to go.
BlurData vs other Mac screenshot redaction tools
| Tool | Auto PII detection | PDF support | Batch | Native Mac |
|---|---|---|---|---|
| BlurData | ✅ 9 built-in + regex for anything | ✅ | ✅ folders | ✅ |
| CleanShot X | ❌ 0 — manual only | ❌ | ❌ | ✅ |
| Xnapper | ~4 types, no regex | ❌ | ❌ | ✅ |
| Macshot | ~4 types, no regex | ❌ | ❌ | ✅ |
| Shottr | ❌ 0 — manual only | ❌ | ❌ | ✅ |
| macOS Preview | ❌ 0 — manual only | ✅ since Sonoma | ❌ | ✅ |
Common screenshot redaction use cases
Developers
Share terminal output, error logs, API responses and database dumps without leaking tokens, IPs, internal hostnames or production data.
Customer support
Attach screenshots to public help threads or shared docs with customer emails, names and account numbers automatically removed.
Product & design
Post screenshots of your app in beta channels, Twitter or Show HN without revealing real user data sitting in the demo account.
Sales & marketing
Use real-world screenshots in pitch decks and case studies — names and amounts auto-redacted so you stay NDA-safe.
Healthcare
Share clinical app screenshots and EMR dashboards with PHI stripped before they hit a chat, ticket or training slide.
Journalists
Publish screenshots of documents, chat logs and leaked materials with sources and bystanders anonymized.
Frequently asked questions
How do I automatically redact a screenshot on Mac?
Use BlurData. Drag your screenshot into the app — it instantly highlights emails, names, addresses, phone numbers, IPs and other sensitive data. Click export to save a redacted PNG ready to share.
Can I redact screenshots from CleanShot X, Xnapper or the default macOS screenshot tool?
Yes. BlurData accepts any PNG or JPG screenshot, no matter what tool you used to capture it. You can also drag screenshots straight from the Finder, Preview or the macOS screenshot floating thumbnail.
Is the redaction destructive or just a blur overlay?
BlurData rasterizes the redaction directly into the exported image — the pixels behind the redaction are replaced. There is no hidden layer to peel off, no metadata that exposes the original content.
Does BlurData work on screen recordings or only screenshots?
BlurData currently focuses on screenshots and images (JPG, PNG) and PDFs. Screen recording redaction is on the roadmap.
Is it really fully offline?
Yes. All detection and rendering happens on your Mac. No screenshot is uploaded anywhere — important for sharing screenshots of internal tools, customer data or PHI.