How to compress a PDF
- Drop one or more PDF files into the box.
- Pick a compression level — Strong for the smallest file, Light for the best image quality.
- Press Compress PDF. One file downloads as a PDF, several as a ZIP.
Frequently asked questions
How much smaller will my PDF get?
Scans and photo-heavy PDFs often shrink by 50–90%. PDFs that are mostly text are already small, so they change little.
Does compression blur the text?
No. Only embedded photos and scanned images are recompressed. Text and vector graphics are kept exactly as they are.
Why didn’t my file get smaller?
Some PDFs are already optimized or store images in formats this tool keeps as they are. In that case the original file is returned unchanged.
Are my files uploaded?
No. Compression runs entirely in your browser, so your documents never leave your device.
