1. Select PDF
Drop PDF file here or click to browse
Single PDF fileQuick Guide
- Upload your PDF document.
- Click Compress to optimize.
- Download the result.
Why Compress PDF Matters
Large PDFs break email. Mobile loads crawl. Cloud storage fills. Size hurts everywhere.
PDF-lib optimizes structure. Metadata strips. Streams consolidate. No re-encoding.
Core Features
- Structural Optimization: Trims redundant data without affecting quality.
- Instant Processing: Works entirely in browser memory.
- Privacy First: Documents never leave your device.
- No Limits: Handle files limited only by RAM.
Quick Tips
Remove unnecessary pages first. Fewer pages shrink more. Audit before compressing.
Standard fonts compress better. Embed only what's needed. Strip hidden layers.
FAQ
Does compression affect quality?
No. Structural optimization preserves text and images. Quality unchanged.
Are files uploaded anywhere?
No. PDF-lib processes in browser. Zero server upload.
Locked PDFs work?
No. Remove passwords first. Security prevents processing.