减小图片大小
Reduce an image to a target file size in KB or MB with honest warnings when the target cannot be met.
上传图片
Choose an image, preview each change, and download the edited file. ResizeWizard keeps the workflow simple, fast, and private in your browser.
工具
减小图片大小
Reduce an image to a target file size in KB or MB with honest warnings when the target cannot be met.
裁剪图片
Crop a photo to custom dimensions or common aspect ratios like 1:1, 4:3, 16:9, and 9:16.
Open tool 简体中文调整图片大小
Resize an image by exact width and height in pixels, with an optional fixed aspect ratio.
Open tool 简体中文转换图片
Convert an image to JPG, PNG, WebP, AVIF, TIFF, or GIF when your browser supports the format.
Open tool 简体中文压缩图片
Compress an image automatically while keeping a useful balance of clarity and file size.
Open tool 简体中文镜像图片
Flip an image horizontally or vertically without uploading it to a server.
Open tool 简体中文旋转图片
Rotate an image left, right, 180 degrees, 270 degrees, or by a custom angle.
Open tool 简体中文减小图片大小
Reduce an image to a target file size in KB or MB with honest warnings when the target cannot be met.
Open tool 简体中文像素化图片
Pixelate the whole image or a selected rectangular area with adjustable block size.
Open tool 简体中文黑白图片
Convert a photo to grayscale or strict black and white.
Open toolFrequently asked questions
减小图片大小 FAQ
Are images uploaded to ResizeWizard?
No. The editor uses browser APIs and canvas processing where possible, so images stay on your device.
Can every browser export AVIF, TIFF, or GIF?
No. ResizeWizard shows those formats where requested, but export depends on browser canvas support. If unsupported, choose JPG, PNG, or WebP.
Can I keep editing after one change?
Yes. After previewing an edit, the preview becomes the current working image, so you can continue with another tool.