Pixelate Image
Turn a photo into big pixels, or drag a box over a face, a number plate or some text and mosaic just that: block size to taste, saved at full resolution.
or browse filesdrop an image here or paste
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Turn a photo into big pixels, or drag a box over a face, a number plate or some text and mosaic just that: block size to taste, saved at full resolution.
or browse filesdrop an image here or paste
This free image pixelator (or pixelizer, or pixel filter, depending on who you ask) cuts a picture into a grid of square blocks, each one the average colour of the pixels it covers, and gives you a slider for how big the blocks are. Small blocks make a photo look like it came off an old game console or a low-resolution screen; large ones turn it into an abstract mosaic where only the shapes and colours survive. It is the classic pixel effect for thumbnails, avatars, retro posters and "guess the picture" quizzes, and because the blocks are true averages rather than a blur, the result stays crisp with hard edges between blocks.
Switch to Areas I drag and the photo stays sharp until you draw a box on it. Each box you drag becomes a mosaic patch, its grid anchored inside the box so the blocks line up with its edges, and you can draw as many as you need: every face in a group photo, the number plate in a car listing, an address or account number in a screenshot - the mosaic censorship you see on TV, done in a browser. Undo removes the last box and Clear starts over. The mosaic is applied to the full-resolution file when you download, so what is hidden in the preview is hidden in the saved image at every zoom. For a soft blur instead of blocks, the Blur Image tool has the same drag-a-box workflow.
The Block size slider sets the block as a share of the photo's short side, so the same setting looks the same on a phone snapshot and a 24 megapixel camera file. The details card on the picture tells you the block size in pixels and how many blocks the image is across, which is handy when a design calls for a particular grid, such as 32 blocks wide for a pixel-art look or 8 for a heavy censor mosaic.
The download is computed from the original file, never from the preview, so a 4000 × 3000 photo comes back as 4000 × 3000 with every block exactly averaged. Save as PNG for a lossless copy with transparency kept, JPG for the smallest file, or WebP for both, or copy the pixelated image to the clipboard and paste it into a chat or a document. The block boundaries are placed in the full-size pixel grid, so the file matches the preview rather than being a scaled-up version of it.
Nothing is uploaded. The photo is read, pixelated and encoded in your browser, which matters more for this tool than most: the reason to mosaic a face or a document is that it should not travel, and here it never does. No signup, no watermark, no file size limit beyond your own memory.
Open the photo and it is pixelated straight away with the default block size. Drag the Block size slider until it looks right, then press Download to save it at full resolution.
Choose Areas I drag, then drag a box on the picture over the face or the part to hide. Draw more boxes for more areas; Undo removes the last one. The download applies the same mosaic to the full-size file.
No. A blur mixes each pixel with its neighbours and keeps a soft version of the detail; pixelation replaces whole blocks with one average colour, which removes the detail completely inside each block. For hiding something, a large block mosaic is the safer choice.
Large enough that a single block covers more than a feature: for a face, blocks about a third of the face's width or bigger, which the slider reaches on any photo. The details card shows the block size in pixels so you can judge it against the thing you are hiding.
Yes. Set the block size so the picture is around 32 to 64 blocks across, shown in the details card, and download as PNG. For a real palette reduction as well, run the result through the 8-Bit Converter.
No. The pixelation runs entirely in your browser; the file never leaves your device, which is the point when the picture holds something you want hidden.