Crop Image
Trim and cut your images to the perfect size.
How it works
Upload Image
Select the image you want to crop.
Set Crop Area
Specify position and size of the crop region.
Download
Download your cropped image.
About This Tool
JustConvert's Image Crop tool lets you trim any image down to a precise rectangular region using exact pixel coordinates. Enter the X and Y position of the crop's top-left corner, then specify the width and height of the area you want to keep. This is ideal for removing unwanted borders, isolating a subject, or preparing images to specific aspect ratios.
Cropping is a lossless operation on the discarded area — the kept region retains 100% of its original pixel data. The output image format matches the original (JPG, PNG, or WebP).
- check_circlePixel-precise crop area control
- check_circleSpecify X/Y offset from the top-left corner
- check_circleSet exact width and height of the crop region
- check_circleRetained area is pixel-perfect with no quality loss
- check_circleOutput format matches the original image
- check_circleSupports JPG, PNG, WebP, and BMP
Cropping removes pixels, it does not resize
Cropping and resizing are often used interchangeably and do different things. Cropping discards the parts of an image outside your selection, so the remaining pixels are unchanged and the dimensions shrink by exactly what you removed. Resizing keeps the whole scene and changes how many pixels describe it.
The practical consequence is that cropping heavily reduces the resolution available. Take a 4000x3000 photo, crop to the central quarter, and you have a 2000x1500 image — still large. Crop to a small detail and you may be left with 400x300, which will look soft the moment it is displayed at any size. Because of this, crop from the highest-resolution original you have rather than from a version that has already been resized down for the web.
Aspect ratios, and why the platform decides
An aspect ratio is the relationship between width and height, and most places an image ends up expect a specific one. Crop to the wrong ratio and the platform will crop again on your behalf, usually from the centre, which is how heads end up cut off in profile pictures and banner images.
The ones worth knowing: 1:1 square for profile photos and most social feed posts; 16:9 for video thumbnails, presentation slides, and website hero images; 4:5 vertical for feed posts that occupy the most screen on a phone; 9:16 for full-screen stories and short-form video. Passport and ID photographs are a separate case with country-specific dimensions in millimetres rather than a ratio, which is what Passport Photo exists for.
Cropping to the target ratio yourself means you choose what stays in frame rather than letting an algorithm centre-crop it.
Composing the crop
A few conventions do most of the work. Placing the subject a third of the way across the frame, rather than dead centre, generally produces a more comfortable image — the rule of thirds. Leaving space in the direction a subject is facing or moving stops the composition feeling cramped against the edge. And cutting a person at a joint, particularly the wrists, elbows, or knees, reads as an error; crop mid-limb instead.
Two practical cautions. Crop tighter than you think only when you are certain of the final use, because you cannot recover what you removed — keep the original. And when the same image is needed at several ratios, crop each one separately from the original rather than cropping a crop, so each version keeps as much resolution as possible.
Aspect ratios by destination
| Ratio | Shape | Where it is expected |
|---|---|---|
| 1:1 | Square | Profile pictures, most social feed posts |
| 16:9 | Wide | Video thumbnails, slides, website heroes |
| 4:5 | Tall | Feed posts optimised for phone screens |
| 9:16 | Full-screen vertical | Stories and short-form video |
| 3:2 | Classic photo | Prints and camera originals |
Frequently Asked Questions
How do I crop an image online for free? expand_more
Upload your image, then enter the X and Y coordinates of the top-left corner of your crop area and the desired Width and Height in pixels. Click Process to download the cropped result.
What do the X and Y coordinates mean? expand_more
X is the horizontal distance from the left edge of the image to where the crop begins. Y is the vertical distance from the top edge. Both are measured in pixels.
Will cropping reduce image quality? expand_more
No. Cropping only removes pixels outside the selected area. The pixels within the crop region are preserved at full original quality.
Can I crop to a square for a profile picture? expand_more
Yes. Enter the same value for Width and Height to get a perfect square crop. Position X and Y to centre the crop on the subject.
What formats can I crop? expand_more
JPG, PNG, WebP, and BMP formats are all supported for cropping.