Compress PDF
Shrink large PDF files for email or upload. Choose a quality level from 10–100%. Runs 100% in your browser — compressed files never leave your device.
Frequently Asked Questions
How much can this compress my PDF?
It depends on the file. Image-heavy and scanned PDFs often shrink by more than half; you pick how much to trade off via the quality slider.
Does compression lower the quality?
At 100% quality pages are re-packed without loss. Below 100% the pages are re-encoded as images at that quality, so very low settings can soften fine text.
Will the text still be selectable after compression?
At 100% quality, yes. Below that, pages are rendered as images so text is no longer copyable — a common trade-off for much smaller files.
Does it work for scanned PDFs?
Yes. Scanned or image-based PDFs are the best fit for the quality slider and often compress the most.
How large a PDF can I compress?
Processing happens in your browser, so limits depend on your device memory and CPU rather than a server cap.
Are my PDFs private?
Yes. Compression is fully client-side — your file never leaves your device.