To add text, select Tools > Edit PDF > Add Text. Drag to determine the width of the text box you want to add. If you want the text to be vertical, right-click the text box and choose to make the direction vertical. The Add Text tool can detect font name, size, color, character, paragraph, line spacing, and horizontal scaling text properties when close to the point of click. The properties are automatically applied and can be changed using the options under Format.
From there, you can type text and resize the text box by dragging the selection handle. Hover the pointer over the line of the bounding box to move the text box. When the cursor changes to the Move pointer, drag the box to the new location. To keep alignment with the other list items, press or hold the Shift key while you drag.
Under the Toolbar you can add text, highlights, drawing, sticky notes, and more. You can add sticky notes or text boxes anywhere on the PDF. With the Adobe online PDF editor you can strike through, highlight, or underline content. With the drawing tool, you can freehand create whatever you want.