Reduce PDF file size significantly. Works by re-rendering each page at optimised quality — perfect for image-heavy PDFs.
This PDF compressor works by re-rendering every page of your PDF at an optimised quality level and rebuilding the file. This dramatically reduces file size for image-heavy PDFs — scanned documents, photo PDFs and mixed-content files can shrink by 40–80%. Nothing is uploaded to any server — everything runs in your browser.
Reduces size by ~15–30%. Best for documents where print quality matters — presentations, portfolios.
Reduces size by ~40–60%. Ideal for email attachments — good quality, significantly smaller file.
Reduces size by ~60–80%. Best for archiving or sharing where file size matters more than image quality.
Text-only PDFs are already highly efficient. This compressor works best on PDFs containing images, scans or photos. A pure text document may not compress further.
At Medium level, text remains sharp and fully readable. High compression may slightly soften fine text in scanned documents. Low compression has no visible impact on any content.
No — compression happens entirely in your browser. Your PDF never leaves your device.
There is no hard limit, but very large PDFs (50MB+) may take longer to process and require a modern computer with sufficient RAM. Most PDFs under 50MB process within 30 seconds.
A PDF compressor is a free online tool that reduces the file size of PDF documents without losing essential quality. It is ideal for emailing large PDFs, uploading to websites and reducing cloud storage usage.
Compress PDFs to under the email attachment limit (typically 10–25MB depending on provider).
Reduce PDF file size before uploading to websites, portals and cloud services with file size limits.
Compress archived PDFs to reduce cloud storage costs and backup sizes.
Make PDFs faster to download and view on mobile data connections.
Typically 20–70% depending on PDF content. Image-heavy PDFs compress most — up to 80%. Text-only PDFs compress less as text is already efficient.
No — text, fonts and vectors are losslessly compressed and remain perfectly sharp. Image compression may slightly reduce photo quality at high settings.
Medium compression typically reduces size by 40–60% with no visible quality difference for most use cases. Use high compression only for archival where file size matters more than image quality.
Each additional compression yields diminishing returns. A PDF compressed once to 50% of its original size will not compress significantly further.