Compress PDF — Free & Private
Reduce PDF file size for email, web, and storage. Runs entirely in your browser — no upload required.
Drag & drop files here, or click to browse
Files are processed entirely on your device and are never uploaded to any server.
Frequently Asked Questions about PDF compression
How does PDF compression work?
PDF compression removes redundant data and optimizes internal streams to reduce file size while maintaining document readability and quality.
How much can I reduce my PDF file size?
Results vary by content. PDFs with many large images can often be reduced by 50-80%. Text-only PDFs may see smaller reductions of 10-30%.
Will compression affect PDF quality?
Our compression uses lossless techniques, preserving text and image quality. For more aggressive compression, we recommend trying our Merge PDF tool to re-pack the content.
Is there a file size limit?
Free users can compress PDFs up to 50MB. Pro users can compress up to 500MB.
Are my documents kept private?
Yes. All operations run in your browser locally. Your PDF is never uploaded to any server.