Blur and Pixelate Image

What this tool does

Blur and Pixelate Image lets you mark any number of rectangles or ellipses on an image and hide them with a Gaussian-style blur, a mosaic or a solid box. You can also apply the effect to the whole image or to everything except the marked areas.

Screenshots and photos often contain details you should not share: a customer email in a support ticket, a child's face, a car registration, an order number or a password field. Cropping removes too much context, and a quick scribble in a phone editor rarely covers everything cleanly.

Here you drag boxes or ellipses over the sensitive parts and choose how to hide them. Blur uses three box-blur passes, which approximate a Gaussian blur; Pixelate replaces each block with its average colour; Solid box paints over the area completely. The strength is relative to the image size, so the preview and the full-resolution export match. The image never leaves your browser.

How to use Blur and Pixelate Image

1. Drop an image, paste a screenshot with Ctrl+V or load the sample.
2. Choose the Effect: Blur, Pixelate or Solid box.
3. Pick an Area shape (Rectangle or Ellipse) and drag on the image to mark each region.
4. Adjust Strength, or the Box colour for solid boxes; use Undo last or Delete selected area to correct mistakes.
5. Under Apply to choose Marked areas, Whole image or All except areas.
6. Export as PNG or JPG with Download, or Copy image to paste it straight into a chat or ticket.

Tips for better results

• For text and number plates, Solid box is the only option that leaves nothing to reconstruct.
• Use Ellipse with Pixelate for faces; it looks less harsh than a square block.
• All except areas with Blur creates a quick focus effect that highlights one part of a screenshot.
• Mark slightly beyond the edges of text: anti-aliased letter edges can reveal word shapes.

Common use cases

• Redacting names, emails and account numbers from screenshots for bug reports and documentation.
• Pixelating faces of bystanders or children before posting photos online.
• Hiding vehicle registration plates in dashcam stills or car sale photos.
• Blurring the background of a screenshot to draw attention to one button.

Common mistakes to avoid

• Relying on a light blur for text: weak blurs and small pixel blocks can sometimes be partially reversed, so use high strength or a solid box.
• Forgetting that the original file still exists; share only the exported copy.
• Covering visible text but leaving the same information in the file name or in another part of the screenshot.