How to Reduce Large PDFs Created from Microsoft Word
Question details
The user wants to reduce the file size of PDF documents that were created or converted from Microsoft Word using Acrobat XI.

- Product
- Microsoft Word / Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Converting Word documents containing images, fonts, and hyperlinks into PDF format.
- Observed behavior
- The resulting PDF files are unusually large due to high-quality preservation settings in the Acrobat PDFMaker add-in.
Before adjusting compression settings, save a backup copy of your original Word document and identify if the file contains large, uncompressed images that might be causing the size inflation.
Adjust Acrobat PDFMaker Preferences in Microsoft Word
Modify the conversion settings within the Acrobat Word add-in to prioritize a smaller file size over maximum image quality.
Acrobat PDFMaker often defaults to 'Standard' or 'High Quality Print' settings, which preserves high-resolution images, bookmarks, and fonts, resulting in larger files. Changing this to a minimal file size profile significantly reduces the PDF footprint.
Open your Word document and click on the 'Acrobat' tab on the top ribbon, then select 'Preferences' to open the Acrobat PDFMaker Settings dialog.
In the Settings tab, click the 'Conversion Settings' dropdown menu.
Change the setting from 'Standard' to 'Smallest File Size' to apply aggressive compression to the document's elements.
Click 'OK' to save the preferences, then click 'Create PDF' to generate the newly compressed document.

Compress Images in Microsoft Word Before Exporting
Reduce the source document's size by compressing embedded images directly in Word, which naturally leads to a smaller PDF regardless of the converter used.
Compress PDFs Easily with WPS Office
WPS Office provides built-in PDF tools that allow you to convert Word documents to PDF and compress existing PDF files effortlessly, giving you fine control over file size and quality without needing expensive Acrobat subscriptions.
- 1. Open PDF in WPS Office: Launch WPS Office and open your large PDF file.
- 2. Access PDF Compressor: Navigate to the 'Tools' tab on the top ribbon and select 'Compress PDF'.
- 3. Select Compression Level: Choose your desired compression level from the options provided, such as 'High Compression' or 'Normal', to balance size and quality.
- 4. Compress and Save: Click the 'Compress' button and save the optimized file to your computer.

Frequently Asked Questions
Why are PDFs exported from Microsoft Word so large?
PDFs can become bloated if the original Word document contains high-resolution images, embedded fonts, and complex formatting. Exporters like Acrobat PDFMaker preserve these details by default to maintain print quality, resulting in larger file sizes.
Does reducing PDF size affect document image quality?
Yes, aggressive compression reduces file size primarily by downsampling images and removing hidden data. If you need the PDF for high-quality professional printing, you should use moderate compression to balance size and visual clarity.
Can I reduce the PDF size without Adobe Acrobat?
Absolutely. You can use the 'Compress Pictures' feature within Word before saving as PDF, use Word's native 'Minimum size (publishing online)' save option, or use built-in PDF compression tools available in alternative software like WPS Office.




