In most cases PowerPoint slide of 4:3 size work well for most modern projectors. However, the situation with projectors on LCD screens differs – your PowerPoint slide will not fill LCD screen properly. Sometimes you may notice black bars on PowerPoint slides, your content may get stretched or even destroyed. So, what is the solution? PowerPoint slides 16:9 works well on all types of projectors, widescreen projectors and LCD screens. Notice that modern boardroom projectors show the size 16:9.