Formatting Issues

Fix Word Save as PDF Loses Bold Font Formatting

WPS Content Manager Oct 9, 2026 869 views

Question details

The user needs to export a Word document to PDF without losing the bold formatting of specific custom fonts or losing the document's bookmarks.

How to Fix Word "Save as PDF" Losing Bold Font Formatting

Product: Microsoft Word
Device & OS: not provided
Scenario: Exporting a Word document containing downloaded fonts (like Raleway and Open Sans) to a PDF file while preserving bold text weights and structural bookmarks.
Observed behavior: Using "Save as PDF" removes bold text formatting for certain fonts, while using "Print to PDF" retains the bold text but strips out all document bookmarks.

Before you start

Check your downloaded font files to see if they are "variable" fonts, as Microsoft Office often struggles to properly render variable font weights during native PDF export.

Solution 1Recommended

Install Static Versions of the Problematic Fonts

Replacing modern variable fonts with their traditional static counterparts usually resolves PDF export rendering issues in Office.

Fonts downloaded from platforms like Google Fonts often come as "variable-font" files, meaning a single file contains multiple weights. Microsoft Word's PDF export engine may fail to read these weights correctly, causing bold text to revert to regular.

Using static fonts provides Word with distinct, separate files for each font weight, ensuring accurate PDF rendering.

Uninstall the variable font

Go to your computer's Font settings (Settings > Personalization > Fonts on Windows, or Font Book on Mac) and uninstall the variable version of the problematic font (e.g., Raleway or Open Sans).

Download the static fonts

Download the font family again from your font provider. Open the downloaded ZIP file and locate the folder named "static".

Install individual weights

Select the specific static weights you need (such as Regular, Bold, and Italic), right-click them, and choose "Install".

Export to PDF

Restart Microsoft Word, open your document, and try using "Save as PDF" again. The bold formatting should now be preserved alongside your bookmarks.

Install Static Versions of the Problematic Fonts

Font Caching: If the font still looks incorrect after installing the static versions, try restarting your computer to clear the system font cache.

Solution 2

Use the "Print to PDF" Alternative

If you do not need hyperlinks or document bookmarks in your final PDF, the Print to PDF feature bypasses Word's native export bug.

Solution 3

Report the Issue to the Word Product Team

If this issue suddenly began after a recent Office update, reporting it directly to Microsoft helps the development team release a patch.

Free Microsoft Office alternative

Export PDFs with Perfect Formatting in WPS Office

Tired of Microsoft Word bugs breaking your document formatting? WPS Office is a free, lightweight alternative that flawlessly handles custom fonts, preserves bookmarks, and guarantees high compatibility with Microsoft Office formats.

1. Install WPS Office: Download and install the free WPS Office suite on your device.
2. Open your document: Open your existing .docx file in WPS Writer. Your layout and custom fonts will be perfectly preserved.
3. Export with bookmarks: Go to Menu > Export to PDF. Check the option to include bookmarks, and export your file without losing bold formatting.

Highly compatible with Microsoft Word .docx, .doc, and .rtf formats.Flawlessly exports custom and variable fonts to PDF without losing bold weights.Retains all document bookmarks and hyperlinks during PDF conversion.Free, lightweight, and features a familiar user interface for a seamless migration.

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Frequently Asked Questions

What is a variable font and why does it cause issues in Word?

A variable font is a single font file that contains multiple variations (like weight, width, and slant). While highly efficient, Microsoft Office sometimes has rendering bugs with variable fonts during its native PDF export, causing the engine to default to the regular weight and strip away bold formatting.

Why does "Print to PDF" lose my document's bookmarks?

"Print to PDF" works by sending the visual layout of your document to a virtual printer, effectively flattening the file into an image-like structure. This process intentionally strips out interactive digital elements like bookmarks, hyperlinks, and document structure tags.

How can I tell if the font I downloaded is a variable font?

You can usually tell by looking at the downloaded font files. Variable fonts often have "VF" or "Variable" in the filename (e.g., OpenSans-VariableFont_wdth,wght.ttf). Additionally, if a single font file provides a slider for weight adjustments rather than separate files for Regular, Bold, and Italic, it is a variable font.

Document & File Issues