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Paint pixelation or blur over faces, text, and other private details. Process up to 20 images at once.
Need oval regions, adjustable strength, or one-click whole-image blur? Use Blur Image
Drop images here or click to browse
PNG, JPG, WebP (max 20MB each) • Up to 20 images
Upload images to apply mosaic effects
Our free image mosaic tool lets you pixelate images for privacy and censoring. Perfect for hiding sensitive information like faces, license plates, personal details, or any content you want to obscure.
Is this image mosaic tool free?
Yes, our image mosaic tool is 100% free with no limits, no signup, and no watermarks. Process as many images as you need.
Can I mosaic specific regions of an image?
Yes. Paint over just the parts you want to hide with the brush; the rest of the image stays untouched. Undo removes the last stroke.
Are my images uploaded to any server?
No. All processing happens entirely in your browser using the Canvas API. Your images never leave your device.
Can I pixelate the whole image at once?
This tool works with a brush, so paint across the whole picture with a large brush size. For one-click whole-image pixelation or blur, use Blur Image instead.
Can I use Image Mosaic on my phone?
Yes, Image Mosaic works on any device with a modern web browser, including smartphones and tablets.
What block size should I use for effective censoring?
Larger block sizes (20–40px) provide stronger privacy protection by making content unrecognizable. Smaller block sizes (5–10px) create a subtle effect. For sensitive content, use at least 20px.
Remove image backgrounds with AI instantly.
Compress one image or a batch of up to 50 to a target size.
Crop multiple photos at once with the same aspect ratio.
Blur or pixelate a photo, or draw regions to redact faces and license plates, online for free.