Compress PDF Online
Compress and reduce PDF document file sizes directly in your browser. Choose compression level for email and web uploads. 100% private.
Store full-resolution files with zero compression and Swiss-level encryption.
How to Compress PDF Files Online Without Losing Privacy
- Drop your PDF document into the upload box above.
- Choose your preferred compression level: Balanced (recommended for everyday documents and email attachments), Extreme (for strict government portal caps under 1 MB), or Crisp Quality (for visual presentations).
- Click Compress PDF. Each page is optimized locally in your browser memory.
- Check the file size savings and click Download Compressed PDF.
Why Client-Side PDF Compression Matters
Standard online PDF compressors require you to upload your sensitive contracts, tax records, medical files, and financial statements to remote cloud servers. Once uploaded, you have no control over where your confidential data is stored, how long it is retained, or whether it is indexed. Our tool executes 100% on your device via client-side WebAssembly, ensuring complete compliance with NDAs, GDPR, and enterprise privacy standards.
Frequently asked questions
Will text become blurry after compression?
The Balanced setting uses 144 DPI which maintains clear, sharp readability on screens and home printers while shaving off up to 70% of the original size.
Can I compress multi-page documents?
Yes! Our compressor handles multi-page PDFs page by page directly in browser memory.
Are my sensitive contracts uploaded to any cloud server?
Never. Everything runs 100% locally on your device.