Compress PDF, instantly.
Reduce PDF file size for email, WhatsApp & Google Drive. No login required.
Drop your PDF here
or browse files · up to 10 files · max 50 MB each
Your documents stay private
Files are uploaded to a private server over HTTPS, compressed, and permanently deleted immediately after processing.
Frequently Asked Questions
How much can PDF compression reduce my file size?
Typical reduction is 40-70% at Medium level. Image-heavy PDFs compress the most.
Does compression reduce PDF quality?
At Low and Medium settings, quality loss is imperceptible. High and Extreme may affect image sharpness.
Is my PDF file safe?
Completely. Compression runs entirely in your browser — your PDF is never uploaded to any server. Note: because pages are re-rendered and images downsampled, text in the compressed file becomes non-selectable (ideal for shrinking scans and photo PDFs for upload limits).
What is the maximum file size I can compress?
This tool accepts PDF files up to 50 MB.
Why do image-heavy PDFs compress so much more than text PDFs?
Text in a PDF is already stored compactly, but embedded photos are often saved at print resolution (300 DPI or higher). Compression downsamples those images to screen resolution and re-encodes them, which is where most of the size reduction comes from.
Will the compressed PDF still be accepted for government and visa uploads?
Yes — the output is a standard PDF. Compression is the usual fix when a portal rejects a file for exceeding its size limit (many Indian government portals cap uploads at 1–2 MB). Use Medium first; step up to High only if the file is still over the limit.
Key Terms
DPI (Dots Per Inch)
Image resolution inside the PDF. Print needs 300 DPI; on-screen reading looks identical at 96–150 DPI. Downsampling DPI is the main lever of PDF compression.
Lossless vs Lossy
Lossless compression shrinks data with zero quality change; lossy re-encodes images with slight quality trade-off for much smaller files. Low level is near-lossless, Extreme is aggressively lossy.
Optimization Level
The compression intensity applied to the PDF — higher levels downsample images further and strip redundant data, producing smaller files at gradually reduced image sharpness.