Compress PDF Size Online
Reduce your PDF file size while maintaining acceptable quality.
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This tool optimizes PDF object streams without downgrading image quality. For PDFs with many large images, the reduction may be minimal. Best results on PDFs with redundant data or unoptimized structures.
PDF compression reduces the file size of a PDF document by optimising its internal content — most commonly by downsampling or re-encoding embedded images, removing redundant data, and applying more efficient compression algorithms to the file structure. A smaller PDF is easier to email, faster to upload to web portals, and uses less cloud storage. Compression is especially effective on PDFs that contain high-resolution photographs or scanned pages.