Updated September 14, 2026

Image Resizing FAQ

Answers about pixels, aspect ratio, resizing, cropping, social media dimensions and when to resize before compressing.

What is image resizing?

Image resizing changes pixel dimensions, such as reducing a 4000 x 3000 photo to 1600 x 1200. It is different from compression, which changes file storage.

What is the difference between resizing and cropping?

Resizing scales the whole image to new dimensions. Cropping removes part of the image to fit a frame or focus on a smaller area.

Does resizing an image reduce quality?

Resizing down usually keeps acceptable quality if the final size matches the display need. Enlarging an image can look soft because it cannot create real detail.

How do I resize an image without losing visible quality?

Keep the aspect ratio, avoid enlarging small images, and choose dimensions that are large enough for the final display or print use.

How do I reduce an image to a specific width?

Set the target width and keep aspect ratio enabled. The height will be calculated from the original proportions.

How do I resize an image to a specific height?

Set the target height and keep aspect ratio enabled unless you intentionally need a stretched or cropped result.

Should I resize or compress an image?

Resize first when the image has more pixels than needed. Compress when the dimensions are right but the file is still too large.

What image size is best for websites?

Use the smallest pixel dimensions that still look sharp in the page layout. Hero images, thumbnails and icons usually need different sizes.

What is the difference between pixels and resolution?

Pixels are the actual width and height of the image. Resolution often refers to pixel density for display or print, such as DPI or PPI.

How do I resize an image without changing its aspect ratio?

Lock the aspect ratio before editing. Then enter only width or height, and let the other dimension update automatically.