Screenshot security
Blur is not the same as redaction.
If a screenshot contains API keys, PII, customer data, QR codes, or internal details, the goal is not to make the content hard to read. The goal is to remove the sensitive pixels from the copy you share.
Blur, pixelation, and opaque redaction
| Method | Best for | Risk |
|---|---|---|
| Blur | Low-risk cosmetic hiding where exact recovery would not matter. | Small text, repeated patterns, and short secrets may remain partially inferable. |
| Pixelation | Visual anonymization when content is large and low stakes. | Short text, numbers, and tokens can leak structure or fragments. |
| Opaque redaction | Secrets, credentials, PII, customer data, and policy terms. | Safest when the output is flattened and the original pixels are not preserved. |
What a safer screenshot cleaner should do
- Use opaque masks for sensitive content. Secrets should be covered, not visually softened.
- Flatten the shared image. Redaction should not remain as an editable annotation layer.
- Strip metadata. The clean copy should avoid carrying source metadata from the original screenshot.
- Keep the original separate. The source file should remain untouched while the export becomes the shareable copy.
- Let humans review. Detection reduces mistakes, but screenshot privacy still needs a final check.
How Redaktr handles it
Redaktr defaults to a flattened cleaned output with opaque redaction boxes and metadata stripping. It scans locally for likely sensitive content, lets you adjust what will be hidden, and exports a separate clean copy for AI chats, Slack, support tickets, docs, demos, or public posts.
When to use manual redaction
Use a manual box when you see sensitive data that no detector can reliably understand: a customer's logo, a private metric, a product roadmap, a face in a small embedded image, or a confidential label unique to your team.
Screenshot redaction FAQ
Is blur ever enough for screenshots?
Blur can be acceptable for low-risk cosmetic hiding, but it is the wrong default for API keys, passwords, PII, customer data, or anything where partial recovery would create real exposure.
What does flattened redaction mean?
Flattened redaction means the shared output is rendered as a final image with the covered pixels replaced. The redaction is not just an editable layer sitting on top of the original pixels.
What is a good screenshot sanitizer?
A good screenshot sanitizer should scan for likely leaks, let you review the findings, use opaque masks for sensitive regions, strip metadata, and export a separate clean copy.