Image Cropper
Crop images to any size or a locked aspect ratio with a draggable crop box — free and private.
How to Use
- Drag and drop an image onto the drop zone, or click to browse.
- Drag the crop box to reposition it, or drag a corner handle to resize.
- Optionally lock the aspect ratio to 1:1, 4:3, 3:4, 16:9, or 9:16.
- Choose an output format and quality if needed.
- Click Download Crop to save the cropped image.
When to Use This
- Cutting a 16:9 thumbnail from a landscape photo so the platform does not choose its own crop and slice off someone's face.
- Trimming the empty margins and browser chrome off a screenshot before pasting it into a bug report or a document.
- Making a square profile picture from a group shot, with the live pixel readout confirming the crop is still large enough.
Frequently Asked Questions
About This Tool
Cropping selects a sub-rectangle of the original pixels and discards the rest. Nothing is resampled, so the kept area stays exactly as sharp as it was; what changes is the framing and the final pixel dimensions. Aspect ratio matters because most platforms will crop for you otherwise: 1:1 for profile images, 16:9 for video thumbnails, 9:16 for vertical stories.
The crop box is an overlay you drag with pointer events, freeform or locked to 1:1, 4:3, 3:4, 16:9 or 9:16. At export its on-screen position is scaled up to the image's natural resolution and the matching rectangle is copied with a source-rectangle drawImage, so the download is cut from full-resolution pixels rather than the preview. The readout shows the true output size while you drag.
Notes & Limits
- Crop edges are set on the scaled preview, so on a large photo one on-screen pixel covers several real ones and the boundary can land slightly off.
- The box cannot go below 24 pixels on screen or extend past the image, so there is no way to crop outward and add blank canvas.
- Keep Original exports GIF and BMP input as JPEG over a white fill, because the canvas writes only JPEG, PNG and WEBP files.
- Cropping a JPEG re-encodes it at the chosen quality instead of performing a lossless block-aligned cut, so the kept area is compressed a second time.