PDF Editing Issues

How to Make a Polygonal Line Bounding Box Transparent in Adobe Acrobat

Olivia MillerOlivia Miller Nov 2, 2026 869 views

Question details

The user needs to make the bounding box of a polygonal line comment transparent so it doesn't obstruct the underlying document content during editing.

How to Make a Polygonal Line Bounding Box Transparent in Adobe Acrobat
Product
Adobe Acrobat
Device & OS
not provided
Scenario
Adding and positioning polygonal line comments in a PDF document.
Observed behavior
The selection box around the polygonal line is opaque, blocking the document text and making it difficult to properly view or position the annotation.
Before you start

Ensure that your PDF document allows commenting and is not protected by restricted editing permissions.

Solution 1Recommended

Adjust Opacity in Properties and Set as Default

Change the opacity settings within the appearance properties of the polygonal line to make the bounding box transparent.

Acrobat allows you to customize the appearance of any comment or shape tool. By lowering the opacity, the bounding box and the shape's fill become transparent, allowing you to see the text underneath while accurately positioning your lines.

1
Select the Polygonal Line

Click on the polygonal line you have drawn in the document to highlight its bounding box.

2
Open Properties

Right-click the selected shape and choose 'Properties' from the context menu.

3
Adjust Opacity

Navigate to the 'Appearance' tab in the Properties dialog box and drag the 'Opacity' slider down to reduce the transparency of the bounding box.

4
Set as Default Appearance

Check the box at the bottom that says 'Make Properties Default' (or right-click the shape later and select 'Make Current Properties Default') so future lines use these exact transparency settings.

Adjust Opacity in Properties and Set as Default
Tip: Setting the modified properties as default saves time if you need to draw multiple transparent shapes across your PDF document.
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  1. 1. Open your PDF in WPS Office: Launch WPS Office and open your target PDF file using the PDF editor.
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  3. 3. Modify the Transparency: Click on the drawn shape, access the shape formatting menu on the right panel, and adjust the 'Opacity' percentage to make it transparent.
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Frequently Asked Questions

Why is my PDF comment box blocking the text?

By default, the fill color or background opacity of certain shape tools may be set to 100%. Adjusting the appearance properties to lower the opacity will make it transparent and reveal the underlying text.

Can I apply this transparency to all future shapes I draw?

Yes. Once you set the desired opacity in the shape's properties, right-click the shape and select 'Make Current Properties Default'. Any new shape of that type will automatically use the same transparency.

Will making the box transparent affect how the document prints?

Yes. If you choose to print the document with 'Document and Markups' enabled, the transparency settings you applied to the comments will be accurately reflected in the printed output.