What it does
Rebuilds the image as a grid of solid blocks, with a choice of how each block picks its color, grid rotation, and brick-style row stagger.
Pixelation leads two lives. One is functional, the privacy mosaic that television has stamped over faces and license plates for decades. The other is aesthetic: enlarged pixels read as deliberate abstraction, the graphic language of early computer imagery, and a way to push a photograph toward geometry without losing its subject. The same operation serves both; only the block size and intent differ.
The load-bearing detail is sampling. Taking one reading from each block’s center is the classic crunchy look, but on video the single tap slides over fine detail and the blocks flicker frame to frame. Averaging everything inside the block is stable and calm, but blocks straddling an edge blend the two sides into a color that exists on neither. The third way picks the block’s most representative color, one that actually occurs inside it, so blocks on an edge commit to one side and the grid stays decisive instead of muddy. Knowing which read you want is most of the craft.
The grid itself is also a surface. It can rotate around a chosen anchor point, so the lattice pivots on a face or a logo instead of the frame corner. Cells can stretch tall toward scanlines or wide toward tape-era blur, and alternate rows can slide into a brick bond, turning plain pixelation into something woven. Pixelate is deliberately the straight-blocks member of a family: shaped cells, hardware palettes, and content-aware subdivision each live in their own effect.
Signature looks
Censor mosaic
Coarse blocks doing their original job, obscuring a region while the rest of the frame stays legible. Broadcast privacy as texture.
Brick bond
Alternate rows offset half a block, the running-bond pattern of a wall. Pixelation with a woven, architectural read.
Tilted lattice
The grid rotated off-axis around a pinned focal point, blocks marching diagonally through the frame like a halftone screen.
Try it on your own footage
This effect runs live in the Modulate editor, with layers, effect chains, masks, and keyframes. Free, no signup, nothing to install.
Common questions
What does the pixelate effect do?
It divides the image into a grid of blocks and fills each block with a single color drawn from the pixels it covers, discarding all detail finer than the grid. Small blocks read as texture, large blocks read as abstraction, and very large blocks become the censor mosaic.
Why does pixelated video flicker, and how do I stop it?
Flicker comes from sampling each block at a single point: as the source moves under the grid, that one tap lands on different details every frame and the block’s color jumps. Averaging the whole block instead makes each frame’s color a stable summary of the same area, so the grid holds calm while the content moves through it.
What is the difference between pixelate and pixel art?
Pixelate only reduces resolution: the blocks keep their photographic colors. A pixel art effect also rations color, snapping the blocks to a limited palette with dithering and outlines, which is what produces the hand-made sprite read. Pixelation is a sampling operation; pixel art is a conversion.
Is pixelation safe for hiding sensitive information?
Treat it as cosmetic, not cryptographic. Researchers have repeatedly reconstructed text and faces from finely pixelated images, because the blocks are averages that still leak information. Big blocks over a small region are reasonably destructive, but for anything that genuinely must not be recovered, a solid opaque fill is the only honest redaction.
Can you pixelate a video?
Yes. The grid is applied fresh every frame, and with block-averaged sampling the result is temporally stable rather than shimmering. In Modulate the Pixelate effect runs live on images and video in the editor, with block size, sampling, rotation, and stagger as controls, and it can be masked to pixelate just one region of the frame.
Related effects
Pixel art effect
Redraws the image at a tiny resolution with a retro color palette, ordered dithering, and optional dark outlines, like a hand-made sprite.
Pixel sorting
Sorts runs of pixels into glitchy streaks by brightness, hue, or saturation. The classic pixel sorting look.
Tone pixelate effect
Splits the image into shadows, midtones, and highlights, and redraws each band as flat pixel blocks on its own offset grid with custom fill and outline colors, like a layered screen-print poster.
Mosaic effect
Tiles the image with shaped cells, from squares and hexagons to organic crystal facets, with grout spacing and tone-driven tile sizing.