Compress PDF

Large PDFs can be difficult to share and store, especially if they contain images, scans, or graphics. By compressing a PDF, you reduce its size without losing essential quality. PDF99’s compression tool lets you choose between aggressive or balanced compression levels to fit your needs.

Best practices

1. Choose the right mode: Use balanced compression for documents and aggressive for image-heavy PDFs.
2. Check readability: Ensure text and graphics remain clear after compression.
3. Batch process: Combine multiple PDFs first, then compress to optimize size efficiently.
4. Secure sharing: Smaller files are easier to upload to websites, forms, or email attachments.

When to use

Compress PDF files when you need to submit forms online, email reports, or archive large batches of scanned documents. The tool is especially useful for students, professionals, and businesses that deal with frequent document sharing.