How to Compress a PDF (Reduce File Size Free)

Is your PDF too large to email or upload? Compressing a PDF reduces its file size while keeping it readable, so it is faster to share and takes up less storage. This guide shows you how to compress a PDF online in a few clicks — no software and no sign-up — and how to choose the right balance between size and quality. With FleetPDF, compression runs in your browser and your files are deleted right after processing.

How to compress a PDF online

1. 1
   Open the Compress PDF tool

   Go to the FleetPDF Compress PDF tool. No account and no download are needed.
2. 2
   Upload your PDF

   Drag and drop your PDF, or click to select it from your device.
3. 3
   Choose a compression level

   Pick a stronger level for the smallest size, a balanced level for everyday use, or a lighter level to keep more detail.
4. 4
   Compress the file

   Click Compress. FleetPDF optimizes images and removes waste to shrink the file in seconds.
5. 5
   Download your smaller PDF

   Download the compressed file. Your upload is deleted right after processing.

Tips for compressing PDFs

• Image-heavy and scanned PDFs shrink the most; text-only PDFs are already small.
• Use a balanced level for a good trade-off between file size and readability.
• Need it under a specific size for email? Use the strongest level for maximum reduction.
• Already merged several files? Compress the final PDF to keep the result small.

Frequently asked questions