See steps 2 and 3 in how to add text. Select the type layer from the Layers panel that has the paragraph you want to justify. If you want to justify a specific paragraph on a type layer, then select it.

Adobe Photoshop is mostly used for illustrations and editing photographs. You can also add text in Photoshop and adjust qualities such as the font, size and color of the text, creating advertisements, images, or titles.

Select your font options. Click the drop-down menu just below the Text tab to view and select a font face, then choose a font size from the drop-down menu just beneath it.