Compress PDF Online

Shrink large PDF documents into lightweight files suitable for email attachments, web uploads, and compact storage while preserving clarity.

Popular Tool

Choose PDF file or drop it here

Supported: .pdf • Max file size: 50MB

Encrypted client-side processing • Files stay private

100% Privacy & Security Guaranteed

Client-Side Encryption

Your files are processed temporarily in your browser memory and never stored on third-party servers. Sensitive data, passwords, and extracted document contents are never logged.

How to Compress PDF Online

Follow these 3 simple steps to process your document in seconds

Select Your PDF

Upload the PDF file you wish to compress from your desktop or phone.

Choose Compression Level

Select between Low (highest quality), Medium (recommended balance), or High (maximum size reduction).

Compress & Save

Click "Compress PDF" to optimize the file structure, compare before/after size savings, and download.

Why Use SumKaro Compress PDF?

Built for speed, uncompromising privacy, and enterprise-grade reliability

Three Compression Presets

Tailor optimization for web sharing, email limits, or archival with precision balance.

Live Size Savings Calculator

See the exact percentage and megabytes saved right on your screen.

Zero Data Leakage

Processing is performed locally in-memory, ensuring business contracts and financial PDFs remain confidential.

Frequently Asked Questions

Common questions about compress pdf

How much can SumKaro reduce my PDF file size?

Depending on the image density and internal structures of your PDF, compression typically yields reductions of 20% to 75% without noticeable loss of readability.