Why stretching happens
Aspect ratio is the relationship between width and height. A 1600 × 900 image has a 16:9 ratio. If it is forced into a 1000 × 1000 square without cropping or padding, the entire scene is squeezed horizontally.
The ImgTidy resizer can lock the original ratio while you change one dimension. That keeps circles circular and prevents faces from looking flattened or stretched.
Fit versus crop
Use Fit entire image when every object must remain visible. The image is scaled proportionally and centered, which may leave unused space. Use Fill and crop center when the target frame must be covered. The image remains proportional, but outer edges are trimmed.
| Method | Keeps whole image | Fills frame | Best for |
|---|---|---|---|
| Fit | Yes | May add blank space | Documents, full compositions |
| Fill / cover | No, edges crop | Yes | Profiles, thumbnails, banners |
Set the right final dimensions
Decide what the destination requires before editing. If an upload form asks for exactly 1200 × 628, entering those values is more reliable than guessing from a preview. Turn off aspect lock only when the destination truly requires a new ratio and you accept the distortion.
Frequently asked questions
Can I resize just one dimension?
Yes when aspect lock is off, but the result changes proportions. Usually only the width or height needs to be entered while the other is calculated.
Does cropping prevent stretching?
Yes. Crop removes edge pixels instead of forcing the whole image into a different shape.
Will enlarging a small image make it sharp?
No. Upscaling invents extra pixels and may look softer.
Put this guide into practice: process the image locally without creating an account or uploading it.
Open the image resizer