Compress PDF Online
Free online PDF compression, reduce file size while maintaining original format, fully local processing
Drag and drop files here, or click to select
Max file size: 100MB
📁 File List (0)
Local Processing
Files are processed locally, never uploaded to servers
Keep Format
Maintain original PDF format, fonts and layout after compression
Batch Compress
Compress multiple PDF files at once
📝 About PDF Compression
PDF compression reduces file size by optimizing file structure and compressing embedded images. This tool uses the pdf-lib library for browser-side processing, ensuring your files are never uploaded to any server, fully protecting your privacy. Compressed PDFs maintain their original format, fonts and layout, and can be opened and printed normally. For PDFs with many high-resolution images, enabling image compression can achieve better compression results.