Blur & Unblur AI: Browser-Based Face Pixelation, No Upload Required

Blur & Unblur AI addresses a common privacy concern for users sharing photos online: the need to hide or obscure people's faces while preserving the rest of an image's context. Rather than relying on cloud-based editing services (which would require uploading sensitive images to an external server), the tool performs all face detection and image processing locally within the browser itself. This design choice eliminates the privacy risk of sending source photos to a third party.

The workflow combines automatic face detection with manual correction tools (Select mode to remove false detections, Lasso mode to draw custom masks) to handle real-world scenarios where automated detection may struggle—side faces, small faces, or faces in low light. The immediate preview of blur strength via the strength slider allows users to fine-tune the effect before export, and the tool exports only the finished PNG without editor overlays, ensuring a clean, shareable result. The constraint mentioned in the FAQ—that very large photos may slow the browser due to device memory limits—is a natural trade-off of client-side processing, but the body does not indicate this is a blocking issue for typical use cases.