How to resize an image without stretching it

Why images stretch when width and height are forced

Every image has an aspect ratio: the relationship between its width and height. A 1600 × 900 image is 16:9, while a 1200 × 1200 image is square. If both dimensions are replaced with numbers that use a different ratio, the visible content has to be stretched or squeezed to fill the new rectangle.

That distortion is usually easy to spot in faces, circles, text, logos, and architecture. The safest default is therefore to preserve the source ratio unless the job explicitly calls for a new composition.

Use aspect-ratio lock for proportional resizing

In the Resize Image tool, Lock aspect ratio keeps width and height connected. Change one dimension and the other follows the proportions of the active source image. Mixed portrait and landscape files keep their own ratios rather than inheriting the ratio of the first file in the batch.

This is the best choice for ordinary downscaling, thumbnails that do not require an exact frame, email copies, and images that simply need to fit within a smaller size.

• Use Pixels when one dimension must be exact.
• Use Percentage when every image should scale by the same relative amount.
• Use Fit to box when images must stay inside maximum width and height limits.

Crop instead of stretching when the target ratio is different

A proportional resize cannot turn a 4:3 photo into a true 16:9 frame without leaving unused space or changing the composition. When the destination needs an exact shape, the usual workflow is resize first, then crop the edges that do not fit.

Cropping removes pixels outside the chosen frame but keeps objects inside the crop geometrically correct. That is generally preferable to making people or objects wider or taller just to hit an exact canvas size.

Resize a mixed batch without forcing one shape on every image

Apply to all is useful when the same sizing rule works for the whole batch. Percentage and fit-to-box modes are especially useful for mixed orientations because each image can keep its own shape while following the shared rule.

Switch to Edit individually when a particular image needs a different size. Preview representative portrait and landscape images before processing a large batch.