Compress PDF – Reduce PDF File Size
Free online PDF compressor. Shrink large PDFs by up to 90% with three quality levels: strong, standard or light compression. Original vs compressed size shown instantly, then download your smaller file. Files never leave your browser — no upload, no sign-up.
Compress a PDF
Shrink your PDF with three quality levels — processed locally, never uploaded.
How it works: each page is re-rendered as a JPEG image, which shrinks image-heavy PDFs dramatically — but text becomes non-selectable (like a scanned copy). Great for emailing or archiving; not for documents you need to search or copy from.