picsize.org is a tool with which you can bring your pictures into the desired aspect ratio with just a few clicks, without losing the original effect of the motif. A butterfly that adorned the upper left corner of the photo stays in the upper left corner.
The "focus system" allows you to first mark the main subject. Then you can rotate, reduce, enlarge, add frames and the result will always be calculated appropriately and displayed in the live preview.
In addition, you have the option of choosing pre-made templates such as "Profilepicture (round)" or "same as your screen" to get the right format for your Whatapp account or screen background.
If you like the result: Simply click "download croped area" and you're done!