Why Adobe Acrobat and Distiller Create Different PDF File Sizes
Question details
The user is experiencing discrepancies in PDF file sizes when creating PDFs from the same source file using Adobe Acrobat versus Adobe Distiller, and needs to understand how to standardize these conversion settings.

- Product
- Adobe Acrobat, Adobe Distiller
- Device & OS
- not provided
- Scenario
- Converting a source document into a PDF file using different Adobe tools and comparing the resulting file sizes.
- Observed behavior
- PDFs created via Acrobat have a noticeably different file size compared to those created via Distiller from the exact same source, due to different underlying conversion presets and workflows.
Determine the original format of your source file (e.g., Word, EPS, or PostScript), as Adobe Acrobat and Distiller apply completely different conversion engines depending on the file type.
Control and Align Conversion Settings in Acrobat and Distiller
Check and modify the specific conversion preferences in both Acrobat and Distiller to ensure they are using matching presets (such as 'Standard' or 'High Quality Print').
Adobe Acrobat uses conversion settings specifically associated with the selected source file type and its respective workflow. It does not universally apply the Distiller preset to every file.
Adobe Distiller is exclusively designed for PostScript-based workflows (like .ps and .eps files). To achieve consistent file sizes, you must manually ensure that the presets in both applications match.
Open Adobe Acrobat, click 'Edit' > 'Preferences' (on Windows) or 'Acrobat' > 'Preferences' (on Mac), and select 'Convert to PDF' from the left sidebar.
Select your specific source file format from the list (e.g., Microsoft Word) and click the 'Edit Settings' button to view the active conversion preset.
Launch Adobe Distiller. Look at the 'Default Settings' dropdown menu on the main screen to see the current Adobe PDF settings applied to PostScript files.
Ensure both Acrobat's file-specific settings and Distiller's default settings are set to the same preset, such as 'Standard', to minimize output differences.
Create Standardized PDFs Instantly with WPS Office
Avoid the confusion of multiple conversion engines. WPS Office provides a unified, built-in PDF converter that consistently generates optimized PDFs from Word, Excel, PowerPoint, and image files without the need for complex Distiller settings.
- 1. Open Your Document: Launch WPS Office and open the source document (Writer, Spreadsheets, or Presentation) you wish to convert.
- 2. Access PDF Export: Click on the 'Menu' button in the top left corner and select 'Export to PDF'.
- 3. Choose Output Quality: In the export dialog box, choose between 'Standard' or 'Compress' depending on your desired file size and quality.
- 4. Export the File: Click the 'Export to PDF' button to instantly generate your standardized PDF document.

Frequently Asked Questions
What is Adobe Distiller primarily used for?
Adobe Distiller is a specific conversion engine designed exclusively for converting PostScript (.ps) and Encapsulated PostScript (.eps) files into standard PDFs. It is not a universal document converter for formats like Word or Excel.
Why does Acrobat make my PDF file size so large?
Acrobat may default to 'High Quality Print' or 'Press Quality' presets, which embed all fonts, retain uncompressed high-resolution images, and preserve complex vector data. Changing the preset to 'Standard' or 'Smallest File Size' will significantly reduce the output size.
Can I force Acrobat to use Distiller for all conversions?
No. Modern versions of Adobe Acrobat use built-in PDFMaker macros and direct conversion engines for most Office and image formats to retain tags and accessibility features. Distiller is only invoked automatically when processing PostScript files.
How do I reduce the size of an already created PDF?
You can reduce the file size of an existing PDF by opening it in Acrobat, navigating to 'File' > 'Save As Other' > 'Reduced Size PDF', or by using the 'Optimize PDF' tool to manually downsample images and remove unnecessary background data.




