Compress PDF

Use the PDF Toolkit’s compress section below.

Compress PDF files — smaller size, same readability

Large PDFs are slow to email and upload. This free PDF compressor shrinks your files with lossless structural optimization, so text stays sharp and the document looks the same. Like every tool here, it runs entirely in your browser — your files are never uploaded to a server.

How to compress a PDF

Add your PDF in the compression tool above.
The tool analyzes the file and applies lossless structural optimization.
Wait a few seconds while compression runs on your device.
Download the smaller PDF.

Compress PDF FAQ

Is PDF compression free?

Yes — compression is free and unlimited, with no account required.

Will compression reduce quality?

This tool uses lossless structural optimization, so text and vector content keep full quality while the file gets smaller.

Are my files uploaded?

No. Everything happens locally in your browser; your documents never leave your device.

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