Fix Unwanted Boxes Around Arrows When Exporting Word to PDF
Question details
The user wants to eliminate unexpected box artifacts that appear around arrow shapes after converting a document to a PDF file.

- Product
- Microsoft Word
- Device & OS
- not provided
- Scenario
- Exporting or saving a text document containing arrows as a PDF file.
- Observed behavior
- Unwanted boxes appear around the arrows in the resulting PDF, despite the arrows rendering correctly with no boxes in the original file.
Open your document and press Ctrl+P to view the Print Preview; if the boxes appear here, it is a document formatting issue, but if they only appear in the final PDF, it is an export rendering issue.
Check and Remove Shape Outline and Background Fill
If the boxes are visible in Print Preview, they are likely caused by hidden shape outlines, text box backgrounds, or shadow settings that need to be removed.
Often, shapes or text boxes have a default white background fill or a transparent outline that behaves unpredictably during export.
Ensuring these properties are explicitly set to 'None' prevents the PDF converter from rendering them as solid boxes.
Click directly on the arrow or the text box containing the arrow in your document to select it.
Navigate to the 'Shape Format' or 'Drawing Tools Format' tab that appears on the top ribbon.
Click on 'Shape Fill' in the Shape Styles group and select 'No Fill' from the dropdown menu.
Click on 'Shape Outline' in the same group and select 'No Outline' to ensure no border is drawn around the bounding box.

Use Microsoft Print to PDF
If the arrows look perfect in Print Preview but show boxes in the final PDF, bypass the 'Save As PDF' engine by using the virtual printer.
Update or Change Your PDF Viewer
Sometimes the PDF is generated correctly, but the PDF reader itself interprets transparent layers incorrectly, displaying them as solid boxes.
Convert Documents to PDF Flawlessly with WPS Office
If you continue experiencing rendering artifacts when exporting documents, try WPS Office. It features a highly accurate, built-in PDF converter that ensures shapes, transparent backgrounds, and arrows export exactly as they appear on your screen.
- 1. Open Your Document: Launch WPS Writer and open the document containing your arrows.
- 2. Access the PDF Exporter: Click on 'Menu' in the top left corner, navigate to 'Export to PDF', and select it.
- 3. Export the File: Adjust your export settings in the prompt if necessary, then click 'Export to PDF' to save your file flawlessly without unwanted boxes.

Frequently Asked Questions
Why do transparent images sometimes show a black or white box in a PDF?
This happens due to PDF flattening or rendering issues. When a document is converted to PDF, some basic conversion engines struggle with alpha channels (transparency) on drawn shapes or PNGs, replacing the transparent area with a solid default background color.
Are arrows inserted as text symbols different from drawn shapes?
Yes. Arrows inserted via 'Insert > Symbol' are treated as text characters. They scale perfectly and do not have bounding box layers. Drawn arrows (via 'Insert > Shapes') have fill, outline, and layer properties that can sometimes cause export errors.
Does the 'Optimize for Minimum size' setting affect how shapes look in a PDF?
Yes. Choosing 'Minimum size (publishing online)' compresses images and simplifies drawing layers to reduce file size. This aggressive compression can sometimes create rendering artifacts, such as unexpected boxes. Try exporting with 'Standard (publishing online and printing)' instead.




