Compress a PDF using object streams and structure optimization — no image quality is lost.
Upload the PDF to compress
Object streams are optimized and metadata is cleaned
Download the smaller PDF
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
0 bytes uploaded. PDF Compress (Lossless) runs entirely in your browser using pdf-lib and pdfjs-dist. Your file stays on your device at all times. No data is sent to any server.
Typical reduction is 10-30% depending on the original file's structure and metadata.
Aggressively reduce PDF file size by removing all metadata, optimizing streams, and cleaning structure.
Open toolRemove author, title, producer, creation date, and all metadata from a PDF. Essential for privacy before sharing.
Open toolLinearize a PDF for Fast Web View — qpdf-wasm rebuilds the cross-reference table and writes the first-page hint stream so viewers can render page 1 before the rest of the file downloads.
Open tool