How do I highlight text in a PDF document?

Select the Highlight Text tool from the Comment & Markup toolbar. Drag over the text that you want highlighted. The text is now highlighted.

Why can't I highlight my PDF?

Most likely because the file is composed of images (possibly scans) and does not contain any “real” text. If you can't select the text with the text selection tool then you can't highlight it, either. Use other markup tools, like the Square tool, instead.

How do I enable highlighting in PDF?

Open PDF. Click the “Open File” button to select the file you'd like to highlight. This will open the file within PDF element. Highlight Text in PDF. Go to the “Comment” tab and select “Highlight”. Save Highlighted PDF. Once you have highlighted the text, you can save the changes.

How do I highlight non text in PDF?

Click it to expand the Comment panel. Click “Annotations” or “Drawing Annotations”. To highlights parts of the PDF which are not text you'll need to use one of the drawing markup tools, such as Rectangle or Oval, and set their fill color to the highlight color you wish to use.

Where is the highlight tool in PDF?

To highlight PDF content, click the 'Highlight' button in the left menu, and click and drag over the content you'd like to highlight. You can also use the shapes tool in the left menu to outline certain areas on a page.

How do I enable Highlight tool in PDF?

Open PDF. Click the “Open File” button to select the file you'd like to highlight. This will open the file within PDF element. Highlight Text in PDF. Go to the “Comment” tab and select “Highlight”. Save Highlighted PDF. Once you have highlighted the text, you can save the changes.

How do I highlight an area in a PDF?

Highlight your PDF Left-click the mouse, hold it, and move around the page to highlight the area or text. Release the mouse button once the area or text is selected. Once the PDF is highlighted, you have the option of adding a description to each annotation, which you can do from the left vertical panel.

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Last updated on Sep 14, 2026

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