Image Pixelate & Blur

What is Image Pixelate & Blur?

deftdeck Image Pixelate & Blur is a free, in-browser tool that censors part of an image with a blocky mosaic or a smooth blur. It is handy for anyone sharing screenshots, photos, or documents who needs to redact a face, an address, an account number, or a logo before posting. Pick the Pixelate mode for a chunky mosaic look or the Blur mode for a softened smear, then set the Strength: a higher value means larger pixel blocks or a heavier blur. By default the whole image is processed, but you can drag a selection box directly on the preview to limit the effect to one rectangle, and clear it again to start over. The result updates automatically as you adjust the mode, strength, or region. You drag on the original to select the region, and you can click the result image to open a zoom lightbox before downloading the censored image.

How to use Image Pixelate & Blur

1. Drag and drop an image onto the dropzone, or click it to choose a file (PNG, JPEG, WebP, or any image your browser can open) from your device.
2. Pick the mode: 'Pixelate' for a blocky mosaic, or 'Blur' for a soft smear.
3. Set the Strength value to control the pixel block size (Pixelate) or the blur amount (Blur); a higher number means a stronger effect.
4. Optionally drag a rectangle over the original preview to obscure only that region; leave it untouched to apply the effect to the whole image, or click 'Clear region' to reset the selection.
5. Review the result preview, then click the result image to open the zoom lightbox for a closer look (the original is used for dragging the region).
6. Click 'Download' to save the censored image to your device.

Examples

Frequently asked questions

What is the difference between Pixelate and Blur?

Pixelate replaces the area with large solid blocks for a mosaic look, while Blur smears the pixels together for a soft, smudged effect. Both make text and faces unreadable; pick whichever style fits your image.

How do I obscure only part of the image?

Drag a rectangle directly on the original preview to mark the region you want to hide. Only that rectangle is processed; leave the selection empty to apply the effect to the whole image, or use 'Clear region' to remove it.

Does a higher Strength hide details better?

Yes. In Pixelate mode a larger Strength makes bigger blocks, and in Blur mode it widens the blur, so a higher value hides finer details more thoroughly. Very high values can make the area unrecognizable, which is usually what you want for redaction.

Which image formats are supported?

Any image your browser can open (the dropzone accepts image/*), including PNG, JPEG, and WebP. The censored result is exported as a PNG so the blocky or blurred area stays crisp.

Are my images uploaded to a server?

No. Everything runs 100% client-side in your browser using the HTML canvas. Your image is never uploaded to deftdeck or any server, and nothing leaves your device.