Pixelate Image
Pixelate any image online for free. Adjust pixel block size to control the effect. Perfect for censoring faces, hiding details or creating retro pixel art effects.
Drop an image here or click to upload
PNG, JPG, WebP, GIF
How to Pixelate an Image Online
Upload any image, choose a pixel block size, and the tool instantly applies a mosaic pixelation effect. You can pixelate the entire image or switch to region mode and drag a box over just the area you want to blur out. The result downloads as PNG or JPG.
Pixelation works by dividing the image into square blocks and replacing each block with a single averaged colour. A larger block size creates a stronger, more abstract effect. A smaller block size keeps more detail visible while still obscuring fine features like text or faces.
Common Uses for Image Pixelation
The most popular use is censoring sensitive information before sharing screenshots or photos online. This includes blurring out faces for privacy, hiding licence plates, obscuring personal details in documents, or masking usernames and email addresses in screenshots.
Pixelation is also used creatively. Designers use heavy pixelation for retro or 8-bit style graphics. Thumbnail designers pixelate parts of an image to create curiosity. Social media managers use it to obscure spoilers or sensitive content while still showing context.
Pixel Block Size Guide
| Block Size | Effect | Best For |
|---|---|---|
| 2-4px | Subtle softening | Light privacy blur, slight texture |
| 8-12px | Clear pixelation | Censoring text, small details |
| 16-24px | Strong mosaic | Hiding faces, licence plates |
| 32-48px | Heavy abstraction | Retro art, thumbnails, full obscuring |
Region Pixelation for Targeted Censoring
Switch to 'Select Region' mode and drag a rectangle over the specific area you want to pixelate. The rest of the image stays perfectly sharp. This is ideal for censoring a single face in a group photo, hiding one line of text in a screenshot, or blurring a number plate while keeping the rest of the car visible.
The region selection works on both desktop (click and drag) and mobile (touch and drag). You can redraw the region as many times as you need before downloading.
Frequently Asked Questions
Can pixelation be reversed?
No. Pixelation permanently destroys detail by averaging pixel data into blocks. Once an image is pixelated and saved, the original detail cannot be recovered. This is why pixelation is a reliable method for censoring sensitive information, unlike simple blurring which can sometimes be partially reversed with AI tools.
What pixel block size should I use to hide faces?
A block size of 16 to 24 pixels is usually enough to make a face completely unrecognisable. For smaller faces in the background of a photo, 12px may be sufficient. Always check the result at full zoom before sharing to make sure no identifying features are visible.
Is this tool free to use?
Yes, completely free with no limits. Your images are processed entirely in your browser and are never uploaded to any server. Nothing leaves your device.
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