Pixelate an Image Online
Turn a face or sensitive area into a block mosaic — adjustable block size, free, and right in your browser.
拖入图片以开始模糊处理
拖放、粘贴或选择文件
PNG · JPG · WebP · GIF · BMP — 在您的设备上处理
Why pixelate instead of blur?
Pixelating replaces an area with large mosaic blocks, each block one flat colour. It's the classic 'censored' look you see on TV and in news photos. Compared with a blur, a pixelated area reads more clearly as deliberately hidden — useful when you want it to be obvious that something was removed.
You control the block size with a slider: bigger blocks hide more detail. Pixelate the whole image, or drag a box over just a face, a plate, or a logo. Each block is the average colour of the pixels beneath it, so the result blends naturally with the surrounding image.
How to pixelate an image
- Open your image. Drag it onto the tool, choose a file, or paste it.
- Select the area. Choose Selected areas and drag a box over each part to censor, or use Whole image.
- Set the block size. Slide the block size up until the detail is gone, then download.
Bigger blocks hide more
Small blocks can leave faces or text partly legible. For anything sensitive, increase the block size until you can't make out the underlying detail — or use Redact for a guaranteed solid cover.
pixelate image的原理
- 它的作用
- 马赛克像素化（分块取平均）
- 工具如何实现
- 本工具将所选区域划分为正方形分块的网格，并用其下像素的唯一平均色填充每个分块——也就是经典的“打码”马赛克——分块大小由滑块控制（最小 2 px）。
- 用途
- 像素化能清楚地被识别为有意的打码，因此当你想让人一眼看出某处被隐藏时，它是新闻式给人脸、车牌或标志打码的常见选择。
- 能否还原？
- 每个分块都是真实像素的平均值，因此较小的分块可能让人脸或文字仍部分可读，且偶有被重建的情况——把分块加大，直到不再残留任何结构。
提示： 增大分块尺寸，直到下方的形状完全消融；藏在少数几个大分块后面的人脸，远比藏在许多小分块后面的安全。
More ways to blur & hide
常见问题
What does pixelating do?
It divides the selected area into a grid of large blocks and fills each one with the average colour beneath it, creating a mosaic that hides fine detail.
Is pixelating safer than blurring?
With large enough blocks it hides detail well, but like blur it can occasionally be partly reversed at light settings. For true secrecy, use the Redact (solid bar) mode.
Can I pixelate only a face?
Yes. Choose Selected areas and drag a box over the face; only that region becomes a mosaic. Add more boxes for more faces.
Where is my image processed?
The blurring happens in your browser, so the new file is created on your own device. How any data associated with the tool is handled is described in our privacy policy.
更多图片工具
Crop an image
Crop to any ratio or an exact pixel size.
Image toolResize an image
Change dimensions to exact pixels or presets.
Image toolCompress an image
Shrink file size without visible quality loss.
Image toolRotate an image
Rotate 90°, flip, or straighten a tilted photo.
Image toolConvert image format
PNG, JPG and WebP — convert any to any.