Image redaction
Select an area · mosaic / blur / solid block · export at original resolution
点击选择或拖拽一张图片到此处
支持 JPG / PNG / WebP / GIF（首帧）/ BMP；单张不超过 20MB、2000 万像素；加载时按 EXIF 方向归一化
FAQ
No. The image is drawn and processed with canvas inside your browser; the page makes no server requests at all, and reloading clears it.
Mosaic does blocky pixelation (adjust the block size - bigger is blurrier); Blur does a Gaussian blur (adjust the radius); Color Block fills the boxed area with a solid colour (colour selectable, best for covering completely). Regions can stack - the later stroke covers the earlier one - with step-by-step undo and clear-all.
It exports at the original resolution (not the shrunken preview you see on the page): PNG is lossless, JPG uses quality 0.92. If the image carries an EXIF orientation it is normalised on load, what you see is what you get, and the export matches the on-page display.
Before exporting you can undo or clear everything and redraw at any time; once exported the file is a new image - the original pixels are no longer inside it, so nothing can be restored from the exported file.