The definition of "justified text" is text that is aligned at both the left and right margins, forming a "square" of text. In other words, the left and right margins are straight. When you justify text, it sometimes creates larger white spaces between the words in the paragraph. This alignment can create a clean appearance to a presentation that has been created in PowerPoint.
Open the PowerPoint presentation and choose the slide where the text is located.
Click in the text box that contains the text to be justified.
Press "Ctrl" and "A" at the same time. This command highlights all of the text in the box. Then press "Ctrl" and "J" to justify the text.
Save the presentation once you are satisfied with the appearance of the text.
If you do not like the appearance of the paragraph once you have justified the text, you can return it to a left-aligned paragraph by pressing "Ctrl" and "L." If you are working in Windows 7, you can also perform this action by selecting the text and choosing the "Justify" option on the Home tab under Paragraph.