What makes PDFs large
Most PDF size comes from embedded images. A brochure with high-resolution photos can easily balloon past 50MB even though the text is just a few kilobytes.
How we compress
Our Compress PDF tool re-encodes embedded images with smarter compression, removes redundant metadata, and optimizes the file structure — all while keeping text perfectly crisp and vector graphics untouched.
When to use lossless vs lossy
For documents, forms and anything text-heavy, choose the 'Recommended' preset. For design files and photo books, use 'High quality' to preserve maximum detail. Emailing or uploading to a portal? Use 'Smallest file'.