Compress PDF Size
Drag and drop your PDF here, or click to browse. Downsample images and reduce file memory size locally.
Compress Level
Local Client-Side PDF Compressor
Downsample images and optimize document file structures in your local browser sandbox. Reduce PDF memory footprint without compromising key details.
Three Custom Presets
Select between Low compression (maximum quality), Medium (balanced speed/quality), and High (smallest size) based on sharing limitations.
Visual Size Metrics
Review the compression output size and active file size reductions in real-time, calculating exact percentages saved.
Local Canvas Resampling
Utilizes HTML5 canvas pixel downsampling algorithms to re-render pages as compressed JPEG maps directly in memory.
100% Sandbox Privacy
Calculations execute on local hardware within your browser's sandboxed boundaries. Zero files are sent to external databases.
Local System Limits
Standard browser capabilities enable fast processing for all hardware. Support depends on browser memory constraints.
Size & Volume Allocations
- Individual File LimitsMax 100MB per document. Restricting single document size protects the browser parser from execution locks.
- Page Count Safety CapMax 250 total input pages. Capping input ranges protects active memory and maintains responsiveness.