Cropping is not stretching
To obtain a square photo you should not force width and height independently. The correct thing to do is to select a 1:1 area within the original image and eliminate what is outside.
Place the subject first
Before closing the frame, place the main face or object within the area you actually want to keep. Leave a little space around it because some platforms show the photo inside a circle.
Use the 1:1 ratio to help
In the crop editor you can choose 1:1 to keep a square while changing its size. That ratio is optional: the content of the photo is never warped, only the selected area changes.
Avoid cutting too close
If the face or logo touches the edges of the square, a subsequent circular mask can crop it further. A small margin usually produces a more flexible profile photo.
Check the final resolution
After cropping, review the resulting dimensions. A very small crop of a large photo may look good as a thumbnail but lose sharpness if you enlarge it later.
Do it directly in Luna4
Process your image in the browser and review the result before downloading.
Crop a square photo