Crop Image

How to use the crop image

1. Choose an image. The whole picture is selected at first, and its size in pixels is shown.
2. Set the crop area. Drag the box or its handles, or type exact values for the left edge (x), top edge (y), width and height. The numbers and the box always stay in step.
3. Optionally lock an aspect ratio of 1:1, 4:3, 16:9 or 3:2. The box adjusts to that shape and keeps it while you resize.
4. Choose PNG, JPG or WebP and select Crop and download.

Two ways to set the crop

The four number fields are the main, fully accessible way to crop. Every value is in pixels of the original image, measured from the top left corner, which is x 0 and y 0. The drag box is a convenience on top. It works with a mouse, a finger or a pen, and it updates the numbers as you drag, so you can drag roughly and then fine-tune with the numbers.

You can also use the keyboard on the box itself. Press Tab until the crop area is focused, then use the arrow keys to move it one pixel at a time, Shift with the arrow keys to make it larger or smaller, and hold Ctrl, Alt or Command for steps of ten pixels.

How aspect ratio locks behave

Choosing a ratio shrinks the current box to the largest area of that shape that fits inside it, centered on it. With a ratio locked, changing the width changes the height to match, and the other way round. Dragging is limited to the corner handles, which keep the shape, and the edge handles are hidden. Values are whole pixels, so the shape can be off by up to half a pixel. For instance, 16:9 at a width of 100 pixels gives a height of 56. Choose Free to unlock.

How the crop is made

The tool decodes your picture, applies any rotation stored in a photo so that the preview matches what you expect, and copies exactly the selected pixels onto a new canvas of the crop size. There is no scaling, so the output is pixel for pixel what you selected. The picture is never uploaded, and the preview you drag over is a scaled-down copy that is only used for display.

Output formats and limits

The choices behave like this.

• PNG is lossless and keeps transparency.
• JPG is smaller for photographs. It has no transparency, so transparent areas become white.
• WebP is usually small and keeps transparency, but if your browser cannot save WebP, the tool saves a PNG and tells you.
• Input up to 25 MB, no more than 16,384 pixels on a side and 120 megapixels. Larger files are refused with a message.
• Metadata such as location and camera model is not copied into the cropped file. SVG files are drawn at 1024 pixels wide before cropping, and animated images use their first frame.

After cropping

To change the pixel size of the result, use the image resizer. To reduce its file size, use the image compressor, and to change format for a batch, use the image converter.

Assumptions and limits

• The image is processed on your device. Nothing is uploaded or stored.
• Crop values are whole pixels of the original image, measured from the top left corner.
• With an aspect ratio locked, the shape can differ from the ideal by less than one pixel because of rounding.
• Output is limited by input size: 25 MB, 16,384 pixels per side and 120 megapixels. HEIC is not supported.
• Metadata and color profiles are not carried into the cropped file. Animated images use their first frame.

Formulas reviewed October 10, 2026. See the calculation methodology for how SumPanda rounds, tests and sources its formulas.

Frequently asked questions