Not yet available
Straighten a rectangle. Pixelate selected areas.
CornerMask gives you two focused photo tools. Drag four corners around a document, painting, poster, or sign to straighten its perspective. Select faces to pixelate, or draw a rectangle over another area.
The outer magnifier shows the surrounding area. The inner circle shows original pixels for precise corner placement.
Use it inside Apple Photos
Edit an existing photo through the Photos extension, or open a photo in CornerMask and save a separate copy. Recognized Photos edits can be reopened and adjusted from the original image.
Full-resolution output, local processing
Your photos are processed on your device. CornerMask needs no account and includes no advertising, analytics, or tracking.
Export full-resolution SDR JPEG still images. Perspective correction changes the output dimensions to match the selected rectangle. Supported source metadata is retained where possible.
Availability
The first public release will be free. CornerMask is not yet available on the App Store.
Requires iOS/iPadOS 27 or macOS 27. Read the support guide for current format limits.
Questions?
CornerMask is a product of Marco Polo Research Lab LLC. Email support@mprlab.com.