All tools›General tools›Compress PDF
Compress PDF Online
Reduce your PDF file size in seconds — free, private, no signup. All processing happens in your browser.
✓ No server upload✓ No signup required✓ Open source✓ Unlimited file size
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Drop your file here
or click to select from your computer
PDF files

Frequently Asked Questions

Is my PDF uploaded to a server?
No. All compression runs locally in your browser. Your files never leave your device.
How much can I compress a PDF?
Typically 10–30% for text-based PDFs. Results vary depending on content type.
Will quality be affected?
No. The current compression is lossless — text and vectors are preserved exactly.
Is there a file size limit?
No hard limit. Very large files may be slower depending on your device.
Can I compress multiple PDFs?
Currently one at a time. Batch processing is coming soon.