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Compression Profile
Advanced Settings
PDF Output
Compatibility Level
1.3 = max legacy · 2.0 = best compression
Color Image DPI
Resolution for color images
Grayscale Image DPI
Resolution for grayscale images
Monochrome Image DPI
Resolution for B&W images
Downsample Method
Image Compression
JPEG Quality
0 = smallest · 100 = best
Optimisation Flags
Detect Duplicate Images
Deduplicate identical bitmaps
Remove Unused Resources
Strip unused fonts & images
Compress Fonts
Compress embedded font data
Subset Fonts
Embed only used glyphs
Compress Objects
Flate-compress page objects
Remove Annotations
Strip comments & links
Linearize (Fast Web View)
Optimise for streaming / web
Grayscale Output
Convert all color to gray
Preserve ICC Profiles
Keep color profiles (prepress)
Performance (Large Files)
Skip Interpolation
Faster but slight image aliasing
Disable Transparency
Faster for non-transparent PDFs
Output File
Filename prefix
.pdf & timestamp added automatically
Output Encryption
AES-256 password-protect the output PDF
AES-256 via qpdf. Both open and owner passwords set to this value.
Command Preview
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Compression complete!