Compress PDF Files Online
Reduce PDF file size by up to 90% for email, upload forms, and the web. Compression runs on your device — your document is never uploaded.
Free uses left: 5 · Upgrade for unlimitedStep by step
Add your PDF
Drop a PDF into the box or click to browse from your device.
Pick a level
Balanced works for most documents; Strong gives the smallest file; Light keeps the most detail.
Compress
Pages are re-rendered and optimized right in your browser with a live progress bar.
Download
Your compressed PDF downloads automatically with the size savings shown.
Questions about this tool
How much smaller will my PDF get?
It depends on the content. Image-heavy PDFs often shrink 60–90%, while text-only PDFs shrink less. The tool shows exact before/after sizes when it finishes.
Does compressing a PDF reduce quality?
Compression re-renders pages at an optimized resolution. The Light setting keeps near-original quality; Strong trades some sharpness for the smallest possible file.
Is it safe to compress confidential PDFs here?
Yes. Unlike most online compressors, KhanxTools never uploads your file — all processing happens locally in your browser.
Will links and selectable text be preserved?
This compressor rasterizes pages for maximum size reduction, so text becomes part of the page image. If you need selectable text, use the Light setting on a copy and compare.