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

- 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.
Ensure that your PDF document allows commenting and is not protected by restricted editing permissions.
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.
Click on the polygonal line you have drawn in the document to highlight its bounding box.
Right-click the selected shape and choose 'Properties' from the context menu.
Navigate to the 'Appearance' tab in the Properties dialog box and drag the 'Opacity' slider down to reduce the transparency of the bounding box.
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.

Edit and Comment on PDFs Easily with WPS Office
WPS PDF offers a comprehensive suite of intuitive commenting and annotation tools. You can easily adjust the color, thickness, and opacity of any shape or line, ensuring your comments enhance rather than obstruct your documents.
- 1. Open your PDF in WPS Office: Launch WPS Office and open your target PDF file using the PDF editor.
- 2. Access the Comment Tools: Navigate to the 'Comment' tab on the top ribbon and select the 'Shape' or 'Line' tool to add your annotation.
- 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.

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.




