Pixelate Image Online
Apply a mosaic effect to any part of an image to hide faces, text, or sensitive details.
Session guarantee
Your image is loaded into browser memory, edited locally, and exported back to your device.
Why this feels safer
No file upload for image processing
Clear redaction modes for different privacy needs
Built to hide text, IDs, faces, and other sensitive details
Workspace
Private redaction console
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How to use
Run a clean local workflow
- 1
Upload your image by clicking the button or dragging it onto the page.
- 2
Select "Pixelate" in the toolbar above the image.
- 3
Click and drag a box over the area you want to pixelate.
- 4
Repeat for any additional areas. Click Undo to remove the last selection if needed.
- 5
Click "Export redacted PNG" to download the image with the mosaic effect applied.
Why use this tool
Made for sensitive material
Pixelation is a classic privacy technique used across journalism, video production, social media, and research. A mosaic clearly signals that content was intentionally obscured while preserving the shape and context of what lies beneath.
Unlike a solid black box, a pixelated area still communicates that a face is a face, or that text existed — without revealing the actual content. This is useful when context matters but identity or sensitive data must be protected.
This tool applies the pixelate effect directly in your browser. No upload, no server, no account. Draw over any region and download the result in seconds.
Questions
Frequently asked questions
What does pixelating an image do?
Pixelating replaces the selected area with large colored blocks, creating a mosaic effect. The underlying content becomes unreadable while the general shape and color remain visible.
What is the difference between pixelate and blur?
Blur creates a smooth, frosted-glass effect. Pixelate replaces the area with large square blocks. Both make content unreadable; the difference is visual style.
Can I pixelate a face in a photo?
Yes. Draw a box over any face to apply the mosaic effect. Pixelate is widely used in journalism and broadcasting for face masking.
Can I pixelate text in a screenshot?
Yes. Draw a box over any text area to make it unreadable. For maximum certainty, use Black Box mode which replaces the area with solid black.
Is my image uploaded when I pixelate it?
No. The tool runs entirely in your browser using the Canvas API. Nothing is sent to a server.
Can I pixelate multiple areas in one image?
Yes. Each drag adds a new pixelated region. There is no limit to how many areas you can pixelate in a single session.
What image formats are supported?
You can upload JPG, PNG, and WebP images. The result is downloaded as a PNG file.
Can I undo a pixelated area?
Yes. Click Undo to remove the last region before downloading. The original file is never modified.
Does pixelate work on mobile?
Yes. The editor works in modern mobile browsers with touch-based selection.
When should I use pixelate instead of black box?
Use pixelate when you want the viewer to understand that something was obscured without fully erasing context. Use black box when you need maximum visual certainty.
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