Free PDF tool

Compress PDF Online for Free

Reduce PDF file size with high, medium, or low compression. Compare real output estimates and keep the best balance of size and quality.

Use Compress PDF free →No signup required · Everyday files are processed in your browser

Simple and focused

Compress PDF without installing software

Make large PDFs easier to email, upload, and archive. Choose stronger compression for a smaller file or lighter compression when preserving visual quality matters most.

How it works

Finish in three steps

Choose the PDF you want to reduce.

Select high, medium, or low compression.

Review the result and download the smaller PDF.

Built for everyday PDFs

What this tool gives you

✓Three distinct compression levels
✓Output estimates calculated from your document
✓Never returns a recompressed file larger than the original

Questions

Compress PDF FAQ

Which compression level makes the smallest PDF?

High compression is designed for the smallest result. Medium balances clarity and size, while low preserves the most visual detail.

Why does PDF quality change?

Strong compression can rasterize pages and reduce image detail. Use medium or low when fine print and images need greater clarity.

Ready to work on your PDF?

Open Compress PDF, choose your file, and download the result.

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