This Robot reduces PDF file sizes. It recompresses images, subsets fonts, and applies various optimizations to reduce file size while maintaining acceptable quality.

## Quality Presets

The Robot supports four quality presets that control the trade-off between file size and quality:

|Preset|DPI|Use Case|Typical Savings|
|-|-|-|-|
|screen|72|Screen viewing, smallest files|\~86%|
|ebook|150|Good balance of quality/size|\~71%|
|printer|300|Print quality|Moderate|
|prepress|Highest|Press-ready, largest files|Minimal|