How to Fix Acrobat Reduce File Size Removing Bold and Italic Formatting
Question details
The user experiences a loss of bold and italic font formatting when compressing PDF files using Adobe Acrobat.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Reducing the file size of engineering map PDFs.
- Observed behavior
- Bold and italic fonts are unexpectedly converted to regular fonts on certain pages after the file size reduction process is applied.
Always create a backup copy of your original uncompressed PDF document. Never overwrite your only copy when testing different file size reduction methods to avoid permanent loss of custom font formatting.
Use Advanced PDF Optimizer Settings to Retain Fonts
Manually configuring the PDF Optimizer ensures that Acrobat retains embedded bold and italic fonts instead of discarding them to save space.
The standard 'Reduce File Size' option in Acrobat applies aggressive, automated compression that often unembeds fonts to minimize the file size. By using the 'Optimized PDF' tool instead, you gain granular control over which elements are compressed.
In Adobe Acrobat, open your original document, then go to 'File' > 'Save as Other' > 'Optimized PDF'.
Click on the 'Fonts' panel on the left side of the PDF Optimizer dialog box.
Check the box that says 'Do not unembed any font', or manually select your specific bold and italic fonts and move them to the 'Retain' list.
Click 'OK', name your new file, and save it. Check the engineering maps to verify that the bold and italic formatting is preserved.
Use the 'Print to PDF' Method
Using the Print to PDF function acts as a workaround to compress the file while flattening text properties, preventing unexpected font substitution.
Compress PDFs Safely Using WPS Office
WPS Office includes a robust built-in PDF toolkit that allows you to reduce PDF file sizes securely. It intelligently compresses images and unused data without stripping away your essential bold, italic, or custom engineering fonts.
- 1. Open PDF in WPS Office: Launch WPS Office, click on 'PDF', and open your original large PDF document.
- 2. Access the Compress Tool: Navigate to the 'Tools' tab on the top ribbon and click on the 'Compress' feature.
- 3. Select Compression Level: Choose your preferred compression level from the available options (such as HD, Normal, or Common) to balance file size and visual quality.
- 4. Compress and Save: Click 'Compress' to process the document and save the new file. Your bold and italic fonts will remain perfectly intact.
Frequently Asked Questions
Why does Acrobat change my fonts when reducing file size?
When Acrobat compresses a PDF using the default 'Reduce File Size' option, it often attempts to 'unembed' fonts to save space. If your operating system doesn't have those exact custom, bold, or italic fonts installed, the PDF viewer automatically substitutes them with regular default fonts.
Can I compress a PDF without losing any of its formatting?
Yes. Instead of using the automated 'Reduce File Size' feature, use the 'Optimized PDF' tool in Acrobat. This allows you to navigate to the Fonts tab and manually check the 'Do not unembed any font' option, which preserves all your text formatting.
Does flattening the PDF help prevent font loss?
Flattening a PDF converts text, layers, and formatting into a static image. This permanently preserves the visual appearance, including bold and italics, but it makes the text unsearchable and uneditable. It is an effective last-resort option for complex engineering maps.
