works for me in paint
open image in paint,
click on resize,
resize to the size you want,
click File - click Save - to overwrite the original image as the new size
click File - click Save as - to keep the original image & add the resized image with a new name
(IE:: Test Image, Save overwrites it, Save as Test Image 01 keeps the original Test Image & gives you a reduced Test Image 01)
View attachment 3869 View attachment 3870