Blur or Pixelate an Image

No. Blurring and pixelating happen entirely in your browser with the canvas API. Your photo never leaves your device — no upload, no account, no limits.

No. The tool rebuilds the pixels in the selected area and exports a new flattened image, so the original detail is permanently destroyed in the download. Unlike a black box over text, a real blur or mosaic cannot be undone.

Blur smooths the area into a soft Gaussian haze, while pixelate (mosaic) replaces it with large colored blocks. Both hide the content; pixelation often looks cleaner for faces and plates, blur for backgrounds. Use the strength slider to make either stronger.

Yes. Add as many boxes as you need — each can be moved and resized independently — then apply the effect to all of them in one click before exporting.