Documents lets you highlight, underline, and strikethrough PDF texts with different colors. This is a great way to interact with a document actively and emphasize its key points.
Note: You can highlight or underline text only in PDFs with text layers. For scanned PDFs, please use the Marker or Pen tools to highlight or underline text.
Open a document.
Tap Annotate on the toolbar.
Select the Highlight , Underline , or Strikeout tool. You can select the color for each tool by tapping the color picker .
Select the text to annotate it.
To remove the annotation, long tap the text and select Clear in a pop-up menu.
There is an alternative way to mark up text in PDFs:
Tap and hold on the text you want to annotate.
In a pop-up menu, select Highlight, Underline, or Strikeout. On iPhone, use the arrows to find the needed option.
To change the color, tap the annotated text and select Color in a pop-up menu.
To remove an annotation, tap Clear in a pop-up menu.
To undo the changes, tap on the toolbar. If you need to redo your edits, tap and hold and select Redo.
Note: When any annotation tool is active, use the two-finger scrolling to navigate the document.
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