Sensitive info masking
Hide the private parts before you hit send.
One click finds phone numbers, email addresses, ID numbers, and keys in a screenshot and covers them. It runs on your Mac with Vision and pattern matching, so the unmasked image never leaves your machine.
Download for MacFree · Open source · macOS 14+
How to hide sensitive information in a screenshot
- 1Open the screenshot in the editor with ⌘E.
- 2Choose AI Tools → Redact Sensitive Information.
- 3Review the result; press M to pixelate anything it missed.
- 4Copy or save.
Automatic and on-device
AI Tools → Redact Sensitive Information. No API key, no upload.
Undoable
Masks are annotations. Undo the ones you don’t need, or add more with the mosaic tool (M).
Stays masked downstream
When you later ask a model about the screenshot, it receives the image with its current annotations, so masked areas stay masked.
How Snapok compares
Who uses it
Frequently asked questions
Can the masking be reversed by someone who receives the image?
No. Exported images are flattened; the covered pixels are replaced.
Will it catch everything?
It targets common patterns. Always review before sharing, and use mosaic for anything custom.
Related features
Scrolling screenshotCapture a long web page, chat, or document as one image.Window & UI element captureHover to snap the selection to a window, panel, button, or the menu bar.AnnotationArrows, boxes, text, pen, and mosaic that stay editable later.Backgrounds & framesAdd a background, padding, rounded corners, and a soft shadow.Text recognition (OCR)Copy text out of any screenshot, and search your library by it.Screenshot translationTranslate the text in an image and keep the layout, with your own model.Screenshot libraryEvery capture saved with its annotations, grouped by day, searchable.Color picker & magnifierCopy any on-screen color as HEX or RGB while you capture.
Try Snapok free on your Mac.
Free and open source. macOS 14 or later, Apple Silicon and Intel.