Compress PDF
Reduce PDF file size while maintaining readability
Reduce PDF file size for easier sharing
Large PDFs are a daily nuisance: they bounce off email attachment limits, take an age to upload to portals and eat into cloud storage quotas. Compress PDF shrinks your document's file size so it travels and stores more easily, while keeping it perfectly readable. It is especially effective on PDFs built from photos, scans or high-resolution graphics, where most of the weight lives.
A smaller file is not just convenient, it is often required. Government forms, job application systems and contact forms frequently cap uploads at a few megabytes. Compressing a bulky scan is usually the difference between a submission going through and being rejected.
How to compress a PDF
Upload your PDF and the tool processes it to reduce its size, then offers the optimised version for download. Text-heavy documents compress less because text is already compact, while image-heavy documents can shrink dramatically. You keep the original on your device and download the lighter copy separately, so you never lose the full-quality version.
No uploads, no watermarks
Compression happens in your browser, so your file is never sent to a server and nothing is stored. The result is a clean PDF with no watermark, branding or page limit added — just a smaller version of your own document.
Frequently Asked Questions
Is it free to compress a PDF?▾
Yes. Compress PDF is free to use with no signup and no watermarks added to your file.
Will compressing reduce my PDF's quality?▾
The tool reduces file size while keeping your document readable; you can compress to save space without major visible quality loss.
Are my files uploaded when I compress them?▾
No. Compression runs in your browser, so your PDF stays on your device and is never stored by us.
How much smaller will my PDF get?▾
It depends on the content — PDFs with large images shrink the most, while text-only PDFs compress less.