What are the differences between HTML5 and (pre-5) HTML? How can I make HTML-like forms in Markdown? What is difference between Hypertext and Markup in HTML?
You set the inches and the number of pixels in each of those inches. Photoshop removes or adds data to fit the number of pixels in each of the inches you specified. Note: The original image used in the examples below is 4x4 inches, 100 ppi, 400x400 pixels at 468.8 KB.
What size should your photos be when posting them to the web? What are the common standard digital photo image sizes? Every site I looked at had different size images, but some common themes did emerge. 240 x 160 pixels was a very common small format. Larger images were typically around 460 pixels wide.