Often photos of its original size are not well suited for placement on the web or viewing on mobile devices.
Fortunately, reduce their size by using the popular editor Photoshop is easy.
Open the Photoshop program and from it, through the "File" menu, then "Open", open the photo you are interested in.
Select "Image" section at the top of the program window.
Go to the tune of "Image Size."
Specify the new size of your photo in pixels. If necessary, if you want to change the proportions of the image, uncheck "Keep aspect ratio".
Keep a smaller picture.