How to Compress PDFs
Reduce your PDF file size without sacrificing quality. SwiftPDFLab compresses PDFs entirely in your browser with no server uploads.
Step 1: Upload Your PDF
Go to editor.swiftpdflab.com and upload the PDF you want to compress.
Step 2: Select Compress Tool
Click Compress in the sidebar. The tool analyzes your PDF and shows the current file size.
Step 3: Choose Quality Level
Select your compression level: Low for maximum file size reduction, Medium for a balance of quality and size, or High to preserve maximum quality with moderate compression.
Step 4: Download
Click Compress to process the file, then Download your smaller PDF. The tool shows you both the original and compressed file sizes for comparison.
When to Compress
Compression is ideal for email attachments, web uploads, and archiving. PDFs with many images benefit the most from compression.