How to use and verify
Choose a PNG, JPEG or WebP image and drag over information to hide. Touch input is supported. Each rectangle is solid black and fully opaque, rather than a blur that mixes original pixels. Add multiple rectangles or undo the most recent one.
Keyboard users can enter X, Y, width and height and add a rectangle using the button. Coordinates refer to original image pixels. The preview may scale down, but the saved dimensions are unchanged. Rectangles are clipped to the image bounds and rounded outward to cover complete pixels.
Export draws the source and masks onto a fresh canvas, then encodes a PNG. No editable mask layers or source file are embedded in the download, and source EXIF metadata is not copied. The original remains in browser memory only while editing so that undo works.
Files are limited to 20 MiB and 16 million pixels. The tool does not process every frame of animated inputs. Open the downloaded PNG and inspect names, notifications, QR codes and repeated information near the masked area. Redaction is manual; there is no automatic personal-data detection.
2026 example: 1200×800 image → 1200×800 PNG
FAQ
How do I use this tool?
Choose a PNG, JPEG or WebP image and drag over information to hide. Touch input is supported. Each rectangle is solid black and fully opaque, rather than a blur that mixes original pixels. Add multiple rectangles or undo the most recent one.
Are files or names uploaded?
No. Processing happens in browser memory without sending inputs to a server or external API. Close the tab after using a shared device.
What should I check at the end?
Files are limited to 20 MiB and 16 million pixels. The tool does not process every frame of animated inputs. Open the downloaded PNG and inspect names, notifications, QR codes and repeated information near the masked area. Redaction is manual; there is no automatic personal-data detection.