Why distortion happens
An image stretches when its width and height are changed to a different proportion. A 1200 × 800 image has a 3:2 aspect ratio. Resizing it to 600 × 400 preserves that ratio; forcing it into 600 × 600 turns the rectangular composition into a square and changes the apparent shape of everything inside it.
Aspect ratio in practical terms
Aspect ratio is width divided by height. If only one dimension is known, calculate the other from the original proportions:
new height = original height × (new width ÷ original width)For 1200 × 800 resized to 750 pixels wide, the matching height is 800 × (750 ÷ 1200) = 500 pixels. A ratio lock performs this calculation automatically.
If a destination requires an exact square, preserving the whole image and filling the square are incompatible goals. Choose one of three approaches: crop the edges, add padding, or accept distortion. Cropping usually looks more natural for photos; padding is useful when every source pixel must remain visible.
Resize safely
- Check the original pixel dimensions.
- Find the destination’s actual width, height, and file-size rules.
- Enable aspect-ratio locking in the Resize Image tool.
- Enter one target dimension or use a percentage preset.
- Inspect faces, circles, text, and other shapes that make distortion obvious.
- Download a copy and keep the original.
A warning about batch resizing
A single width and height cannot preserve several different source ratios. If portrait, landscape, and square images are processed with identical dimensions, at least some will stretch unless they are cropped or padded first. YesFreeTool’s batch resizer applies the target dimensions derived from the first image to every selected file, so group files by aspect ratio before running a batch.
Enlargement, export quality, and metadata
Downscaling combines source pixels and can look crisp when the result is displayed at its intended size. Enlargement creates more pixels by interpolation, but it cannot recover texture or focus absent from the original. The result may look soft even though its pixel count is higher.
Browser canvas export creates a new image container. Camera metadata, GPS coordinates, colour profiles, and animation are not reliably retained. That can be useful when removing incidental metadata, but it is not a controlled metadata-preservation workflow.
Tools and next steps
After dimensions are correct, compress the image only as much as the visual result permits. See JPG vs PNG vs WebP before changing formats.