Choose the image you want to prepare for a profile, post, video thumbnail, or page.
Local aspect-ratio image cropper
Crop an image to the aspect ratio you need.
Create a centered crop for square, 4:3, 16:9, or 9:16 layouts in your browser without uploading the original.
* Your image stays in this browser. No upload, account, or server copy.
Local aspect-ratio image cropper
Match the frame before you publish
Pick the destination ratio and check the centered preview for anything near the edges.
Download the new PNG copy and use it where the matching frame is required.
FAQ
What does CropBox change?
Does CropBox upload my image?
No. The image is decoded and cropped in this browser tab.
Can I move the crop?
This version uses a centered crop so the result is predictable and quick. Review the preview when the subject is near an edge.
Does cropping resize the image?
It preserves the crop dimensions at the source resolution and exports a PNG copy. The original is never overwritten.