How it works
The Pixelator creates a mosaic or pixel-art effect by dividing the image into a grid of large square blocks and filling each block with the average color of that region. The result looks like the image was rendered on a retro low-resolution display.
Pixelation has creative, practical, and privacy applications. As a creative effect, it's used for retro pixel art aesthetics, album covers, game graphics, and social media art. As a privacy tool, pixelation is used to redact faces, ID numbers, and sensitive information in screenshots — a softer alternative to blurring. In UI design, pixelated placeholders convey the concept of an image without showing specific content.
How to use it: upload your image. Set the block size in pixels (4px = fine mosaic, 16px = coarse pixel art, 32px+ = very low resolution). The preview shows the pixelated result in real time. Download as PNG or JPG.
Block size guide: 4–8px for a fine mosaic, 10–16px for a medium retro look, 20–40px for a recognizable pixel art aesthetic, 48px+ for extreme low-resolution effect. At 64px+ on a small image (e.g., a 200×200 profile photo), only ~9 blocks are visible — the image becomes almost abstract.
Selective pixelation: for pixelating only a specific region (e.g., a face), use the Privacy Blur tool with very high radius instead — it gives a similar visual result but targets a specific area.
Color accuracy: each block is filled with the mathematical average color of all pixels in that region — the same calculation used by downscaling algorithms. The result is perceptually accurate.
Privacy: pixelation runs in the Canvas API. No image data leaves your browser.
Frequently Asked Questions
- A block size of 8–16px on a small source image (200–400px wide) creates an authentic retro pixel art look. For larger source images (1000+ px wide), use 16–32px blocks to achieve the same visual density. The goal is to create a grid of large, visible color blocks that read as intentional pixel art.
- Use the Privacy Blur tool instead if your goal is face privacy — it draws a selection zone and applies the effect within it. The Pixelator processes the entire image. For selective pixelation, crop the face area, pixelate it, then composite back using design software.
- No. Text pixelation can potentially be reversed by AI text reconstruction algorithms, especially for known fonts and small block sizes. For secure document redaction, use opaque black rectangles or the Privacy Blur tool at maximum strength.
- Each block shows the mathematical average color of all pixels in that region. Averaging many slightly different colors produces a new color that may not appear in the original image. This is correct behavior — it's the same averaging used in image downscaling.