Upload one PDF file from your device.
Optimize PDF
Compress PDF Online
Reduce PDF file size for email, uploads, and shared document workflows.
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How it works
Simple steps from upload to download
Run compression to create a lighter version of the document.
Download the smaller PDF and share it anywhere.
Use Compress PDF when a file is too large for email, uploads, or quick sharing.
This tool is especially useful for scanned documents, image-heavy PDFs, and reports that need a smaller file size without extra setup.
After compression, you can send the smaller file right away or keep using related tools like merge PDF and PDF to image.
FAQ
Frequently asked questions about Compress PDF
How do I compress PDF online?
Upload your PDF, run the compression workflow, then download the smaller output. In PDF Free Online, the optimized file can also be saved back into your workspace.
Why is my PDF file too large?
Large PDFs often contain scans, high-resolution images, or multiple pages exported without size optimization. Compressing the file reduces that weight for easier sharing.
What is compress PDF best for?
Compress PDF is best for email attachments, client uploads, storage cleanup, and any process where document size slows down sharing or approval.
Can I keep the original file after compression?
Yes. Many teams keep both the original and the compressed version so they can preserve quality when needed and still share a lighter copy when speed matters most.
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