Blur Part of an Image
Hide just one area — drag a box over the part to blur and leave everything else sharp, free and 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
Blur only what you choose
Sometimes you only need to hide one thing — a face in the corner, a sign in the background, a number on a screen — while keeping the rest of the photo crisp. This tool lets you drag a box over exactly that area and blur, pixelate, or black it out, leaving everything outside the box at full resolution.
Add as many boxes as you like, each obscured independently, and adjust the strength to taste. When you download, only the selected areas are changed and the effect is flattened into the file — so the rest of your image is untouched and the hidden parts can't be recovered.
How to blur part of an image
- Open your image. Drag it onto the tool, choose a file, or paste it.
- Drag over the area. With Selected areas chosen, drag a box over just the part you want to hide. Add more boxes if needed.
- Adjust and download. Set the blur strength (or switch to pixelate/redact), then download in your original format.
Resize by re-drawing
To change an area, remove it with the small ✕ on the box (or Undo) and drag a new one. Draw the box slightly larger than the detail so nothing identifying peeks out at the edges.
blur part of an image的原理
- 它的作用
- 对一个或多个区域的选择性模糊
- 工具如何实现
- 你只在想隐藏的区域拖出一个方框，并选择模糊、像素化或纯色条；效果按区域应用并被钳制在该方框内，因此你所选范围之外的每个像素都保持其完整的原始分辨率。
- 用途
- 选择性遮盖适用于你只需隐藏一处时——角落里的一张脸、背景中的一块招牌、显示器上的一个数字——而无需让照片其余部分变模糊或降质。
- 能否还原？
- 只有方框内的区域被改动，结果会合并进下载文件，因此被隐藏的部分无法还原，而未触及的区域与原图逐像素完全一致。
提示： 把方框画得比细节略大，避免边缘露出任何可识别之物；要调整方框大小，用它的 ✕ 删除后再拖一个新的。
More ways to blur & hide
常见问题
How do I blur only one part of an image?
Choose Selected areas and drag a single box over the part you want to hide. Everything outside the box stays sharp.
Can I blur several separate parts?
Yes. Drag a box over each part; every box is blurred independently, and you can remove any one of them.
Does the rest of the image stay sharp?
Yes. Only the areas you box are blurred; the rest keeps its full resolution. The effect is baked in when you download.
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.