Blur and Pixelate Images

Supports all common image formats: JPG, JPEG, PNG, WebP, BMP, etc. You can add mosaic or blur effects to any format. Downloads default to PNG format for best quality.

Selected file contents are processed in your browser without being sent to an application upload endpoint. Loading the site, fonts or processing libraries may still require network requests.

Yes. Supports batch mosaic - upload multiple images at once, set mosaic effects uniformly, and process in batch. Supports up to 20 images for batch mosaicking, greatly improving work efficiency.

Mosaic pixelates areas into pixel blocks with high censoring strength. Blur is a Gaussian blur effect that's softer and more natural. Mosaic suits complete censoring of sensitive information, blur suits softening backgrounds or weakening content.

Shape mode suits regular areas like ID cards and text boxes. Brush mode suits irregular areas for freehand painting. The mosaic tool provides both modes to switch as needed.

No quality reduction. The online mosaic tool uses high-quality image processing algorithms, only adding mosaic or blur to specified areas while maintaining original quality elsewhere.

Blur or mosaic may leave information recognizable. For sensitive text or numbers, use an opaque solid cover and inspect the exported file at full size.

Yes. The online mosaic tool supports undo and redo functions. If unsatisfied with a mosaic area, click the undo button. Supports multiple undo steps. You can also delete individual regions and redraw.