Everything You Need to Know About PDF Compression
Why Compress PDF Files?
PDF compression is essential for several reasons:
- Email Attachments: Many email services have size limits for attachments (typically 25MB). Compressing PDFs helps you stay within these limits.
- Website Uploads: Smaller files upload faster and take less storage space on your website.
- Sharing Efficiency: Compressed files transfer quicker over the internet and use less mobile data.
- Storage Optimization: Reduce the space PDFs take up on your hard drive or cloud storage.
How Our PDF Compressor Works
Our tool uses advanced algorithms to reduce PDF file size while maintaining quality:
- Image Optimization: Resamples and compresses images within the PDF using smart algorithms.
- Font Subsetting: Only includes the characters actually used in the document.
- Metadata Removal: Strips unnecessary metadata and comments that increase file size.
- Object Compression: Compresses internal PDF objects and structures.
Choosing the Right Compression Level
| Level |
Best For |
Quality |
Size Reduction |
| Low Compression |
Documents with images where quality is critical |
Excellent |
10-30% |
| Medium Compression |
General documents with mixed content |
Good |
30-60% |
| High Compression |
Text-heavy documents where size matters most |
Fair |
60-90% |
Tips for Best Compression Results
- For documents with images, try the Medium setting first to balance quality and size.
- If your PDF contains scanned pages, consider using OCR (Optical Character Recognition) first.
- Remove unnecessary pages before compression for better results.
- For presentations, reduce image resolutions before adding them to your PDF.
Frequently Asked Questions
Yes, our PDF compression is completely safe. We process your files in your browser without uploading them to our servers, ensuring your documents remain private.
Our tool can handle files up to 50MB. For larger files, consider splitting them into smaller parts before compression.
Text quality remains excellent at all compression levels. Only image quality is affected by higher compression settings.