Drag & drop a PDF here, or click to select
Upload a PDF to compress
How it works:
- Optimizes PDF structure using object streams
- Removes unused objects and redundant data
- Maintains original quality of text and images
Note:
Compression results vary based on PDF content. PDFs with many images may see better compression than text-heavy documents. Already optimized PDFs may show minimal improvement.
Privacy: All processing happens in your browser. Your files never leave your device.
About PDF Compressor
Shrink PDF file sizes by up to 80% without noticeable quality loss. Perfect for email attachments, web uploads, or saving storage space. Runs entirely in your browser—your documents stay private.
Large PDFs are common when they contain images, scans, or embedded graphics. This compressor optimizes the internal structure, reduces image quality to acceptable levels, and removes unnecessary data. The result is a smaller file that looks the same.
How to use PDF Compressor
Upload your PDF file (drag and drop or click to select).
Choose compression level (higher = smaller file, lower quality).
Click 'Compress' to process the document.
Review the size reduction shown.
Download your compressed PDF.
Examples
Typical compression results
Real-world examples of compression:
Scanned document (50 pages): Before: 25 MB After: 6 MB (76% reduction) Presentation export: Before: 12 MB After: 3 MB (75% reduction) Text-heavy PDF: Before: 2 MB After: 1.5 MB (25% reduction)
Compression levels
Choose based on your needs:
Low compression: - Minimal size reduction - Highest quality - Best for: Print documents Medium compression: - Good size reduction - No visible quality loss - Best for: Email, web High compression: - Maximum size reduction - Some quality loss in images - Best for: Archive, preview
Email attachment limits
Common email size limits to stay under:
Gmail: 25 MB Outlook: 20 MB Yahoo: 25 MB Corporate: 10-15 MB (often) Tip: Compress large PDFs to fit these limits
Features
When to use this
- •Reducing file size for email attachments (25MB limit)
- •Uploading documents to size-restricted portals
- •Saving storage space on cloud drives
- •Improving PDF load times on websites
- •Preparing documents for mobile viewing
- •Archiving old documents efficiently