Cropping removes parts from the edges of an image. It is different from resizing, which changes the scale of the complete image.
Cropping is useful when you want to focus attention on a subject or create a specific shape such as a square.
Identify the important subject
Avoid placing crop boundaries too close to faces, products, text or other important details.
Choose an appropriate aspect ratio
Select the shape based on where the image will be displayed.
Cropping is not compression
Cropping may reduce pixel dimensions, but it is not the same as image compression.
Keep the original
Save the original image in case you later need a different crop.
Cropping is a composition decision
Cropping does more than remove unused space. It changes where the viewer's attention goes and how the subject sits inside the frame.
Before saving, try several crops and compare them at the size where the image will actually appear.
Use aspect ratios deliberately
Square, 4:5, 16:9 and 9:16 crops produce very different visual layouts. Choose the ratio according to the final placement before deciding exactly which parts of the image to remove.
This avoids cropping once and then discovering that another platform requires a completely different shape.
Leave appropriate space around people
Avoid placing the crop directly against a person's head, face or hands unless that tight composition is intentional.
If the image will later contain text, leave visual space in the direction where the text will be placed.
Crop product images consistently
For online-store images, similar spacing and framing across multiple products can make the grid look more professional.
Do not cut off important parts of the product unless close-up cropping is intentionally being used to show detail.
Cropping and file size
Removing a large portion of an image reduces the number of pixels and may reduce file size, but cropping is not the same as compression.
If the final file is still too large, compress it after the composition and dimensions have been finalized.
Preview the crop at its real display size
A crop can look excellent while editing at full-screen size but feel too tight when displayed as a small card or thumbnail. After choosing the crop, preview the image at roughly the size where people will actually see it.
Pay particular attention to faces, product edges and text. If the subject feels crowded, restore a little more space around it before saving the final version.
Keep enough space for future use
Avoid cropping so tightly that the image becomes useful for only one placement. Leaving a little extra space around the subject can make the same image easier to reuse in a banner, card or social-media layout later.
If you need several aspect ratios, return to the original image for each version rather than repeatedly cropping an already cropped copy.
Try this task with Nujiz
You can now use the Image Cropper to work directly on your file.
Open Image Cropper →Final takeaway
Choose settings based on where the file will actually be used rather than simply aiming for the smallest size or the highest possible dimensions. Keep your original file, review the processed result and choose a format that suits your final destination.