Frequently asked questions
What does 'lossless' compression mean for PDFs?
Lossless compression reduces file size by removing redundant internal data (duplicate fonts, unused objects, metadata) without changing any visible content. Text and images look identical.
When should I use Compact instead of Optimize?
Use Compact when you need the smallest possible file and the document is a scan or image-heavy. Compact resamples images to a lower resolution, which may slightly reduce visual quality.