Using an Extremely Large Radius
Very large corner curves can make the image look overly rounded
or change the intended visual style.
Start with a moderate radius and increase it gradually until
the corners look right.
Ignoring the Image Shape
The same radius can look different on landscape, portrait,
and square images.
Check the preview and choose a radius that works well with
the image dimensions.
Not Checking Transparent Corners
Rounded corners create transparent areas that may look different
depending on the background where the image is used.
Use the checkerboard preview to confirm the transparent areas
before downloading.
Choosing the Wrong Output Format
Formats that do not support transparency can replace transparent
corners with a solid background.
Download the rounded image as PNG when transparent corners are needed.
Skipping the Final Preview
Small corner details can be difficult to notice until the final
image is viewed at full size.
Always check the preview before downloading the finished image.
