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Tool

Compress PDF.

Reduce your PDF file size with adjustable quality settings.

How to compress a PDF

1

Upload

Select or drag a PDF file.

2

Choose quality

Drag the slider to set compression level.

3

Download

Download your compressed PDF.

FAQ

Compress PDF FAQ.

Common questions about compressing PDF files.

How does PDF compression work?

Our compress PDF tool re-encodes images at lower quality and removes unnecessary metadata to reduce file size. Text and vector content remain sharp.

Will compression affect quality?

At high quality settings (70-100%), the difference is barely noticeable. Lower settings reduce image quality more aggressively for smaller files.

What is the best compression level?

For most documents, 50% offers a good balance. Use 80%+ for print-quality PDFs, and 20-40% for web sharing where file size matters more.

Is there a file size limit?

No artificial limit. Your browser's memory is the only constraint. Most devices handle PDFs up to several hundred megabytes.