About PDF Compressor
The PDF Compressor reduces large PDF files to a fraction of their original size, making them easier to email, upload, and share. Choose from multiple compression levels to balance file size and visual quality.
Our compression engine optimizes images within the PDF, removes unnecessary metadata, and applies efficient compression algorithms. Reduce PDFs by 50-90% while maintaining readable text and acceptable image quality.
Perfect for compressing scanned documents, image-heavy PDFs, and large reports. All processing happens in your browser for complete privacy—your documents never leave your device.
Compression Level Comparison
| Level | Size Reduction | Quality | Best For |
|---|---|---|---|
| Low | 20-40% | Highest quality | Presentations, professional documents |
| Medium | 40-70% | Balanced | Most documents, email attachments |
| High | 60-90% | Good for text | Archival, web uploads, storage |
Common Use Cases
Email Attachments
Reduce PDFs to fit within email size limits (typically 10-25MB). Medium compression works well for most email-worthy documents.
Web Uploads
Many websites limit file sizes for uploads. Compress your PDFs to meet requirements for online forms, job applications, and submissions.
Scanned Documents
Scanned PDFs are often huge due to image data. High compression can dramatically reduce file sizes while keeping text readable.
Storage Optimization
Save disk space and cloud storage costs by compressing large PDF archives. Use high compression for older documents you rarely access.
Frequently Asked Questions
How much can I reduce a PDF file size?
Typical reductions are 50-80% for image-heavy PDFs and scanned documents. Text-based PDFs may see 20-40% reduction. Results vary based on the original content and compression level chosen.
Will compression affect PDF quality?
Text remains sharp at all compression levels. Images are optimized and may show slight quality reduction at higher compression levels. Use "Low" compression for quality-sensitive documents.
What is the best compression level?
Medium compression works well for most documents, balancing size reduction and quality. Use Low for important presentations, High for archival or when file size is critical.
Can I compress password-protected PDFs?
You'll need to remove the password first. Use our PDF unlock tool or the original application to remove protection, then compress.
Is my PDF data secure during compression?
Yes, completely. All compression happens locally in your browser. Your PDF is never uploaded to any server, ensuring complete privacy for sensitive documents.
🔒 Privacy Note: This tool processes all PDF files locally in your browser. Your documents are never uploaded to any server, ensuring complete privacy for sensitive content like contracts, financial documents, and personal information.