Image Cropper
Crop images online by dragging a selection, with ratio presets and exact pixel input
点击选择图片,或将图片拖拽到此处
支持 PNG / JPG / WebP / BMP / GIF,选区在图上拖动即可裁剪,全程本地处理不上传
About this tool
Cropping removes the parts of a picture you do not need and keeps the area you want. Drag a selection on the image, resize it from the corners and export:
- Drag to select: draw a box with the mouse, resize it from any corner and move the whole selection
- Ratio presets: free, 1:1, 4:3, 3:4, 16:9, 9:16 and 3:2, with the selection snapping to the chosen ratio
- Exact pixels: type width and height when a platform demands a fixed size
- Live preview: the result and the exported file size update on the right
- Output control: keep the original format or export PNG, JPG or WebP, with a fill color for transparency when converting to JPG
When to use it
- Profile pictures and product shots: crop to a 1:1 square that fits social and marketplace covers
- Article covers: cut the subject at 2.35:1 or 16:9
- Phone wallpapers: crop to a 9:16 portrait ratio
- Table screenshots: remove the desktop and taskbar around the capture
- Annotated screenshots: crop first, then add text with the watermark tool
Crop versus resize
Cropping removes content: fewer pixels and a different composition. Resizing changes the dimensions of the whole image: same content, scaled up or down. They work well together: crop first, then resize to the size a platform requires.
FAQ
Q: Does cropping lose sharpness?
A: The removed area is gone, but the kept area still holds its original pixels and is not resampled. That is different from shrinking an image.
Q: Do the file name and dimensions change?
A: The name looks like crop_widthxheight.png, and the dimensions match the selected pixel area, which makes the result easy to identify.
Q: Are images uploaded?
A: No. Selection and export run in a browser canvas; the server never sees the image.
Related tools: rotate and flip to fix orientation, resize to change pixels, and the collage tool for grid layouts.