Pixelate Image Online — Free Tool
Turn any photo into a mosaic-style image with imgic’s pixelation tool. Adjust the block size to control how coarse the effect appears. Everything runs in your browser, so the transformation is instant and completely private. Preview the result live, then download it in one click.
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Why use this tool?
Upload your image and use the block-size slider to set the pixelation level. Smaller blocks keep more detail while larger blocks create a bold mosaic effect that can also serve as privacy blurring for faces or text. The live preview refreshes as you adjust, so there is no guesswork involved. Once you are satisfied, download the pixelated version right away. Every pixel of processing happens on your device, meaning your files never leave your browser and no data is ever sent to a remote server.
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Frequently asked questions
How does the block-size slider work?
The slider sets the width of each pixel block in the output. A low value produces subtle pixelation that preserves most detail, while a high value creates large, chunky blocks for a dramatic mosaic look or strong privacy masking.
Is my file private and secure?
Completely. Your file is processed 100% inside your browser using the Web APIs built into your device. Nothing is uploaded to any server — imgic never sees, stores, or transmits your images. You can even use these tools offline once the page has loaded.
Can I pixelate just part of an image?
This tool applies pixelation to the entire image. If you need to obscure only a specific region, crop that area first using imgic’s crop tool, pixelate it, and then composite the result back in your preferred editor.
Is pixelation reversible?
Once you download the pixelated image, the original detail in those blocks is permanently reduced in the exported file. Always keep a copy of your original if you might need the full-resolution version later.
What file types can I pixelate?
You can upload JPEG, PNG, or WebP images. The export keeps the same format as your source file, so it slots back into your workflow without extra conversion steps.