Compress PDF
Reduce PDF file size in your browser. No uploads, no account — 100% local processing.
Drop files here
Max 15 MB
100% local processing — your files never leave your device.
How to Compress PDF Online Free
Compress PDF files free in your browser using pdf-lib. Removes redundant objects and compresses streams — text-heavy PDFs often shrink by 20–60%. Your PDF bytes never leave your device. Free, no account required, supports files up to 100MB.
Choose your PDF
Drag and drop your PDF document. It stays 100% private in your browser.
Select preset
Choose 'Screen' for web use, 'eBook' for reading, or 'Printer' for high-quality output.
Download PDF
Your optimized document is ready for download in seconds.
100% Private
Your PDF never leaves your device. Secure local processing.
Instant Processing
No upload wait. Compression happens instantly in your browser.
Free Forever
No account, no limits, no cost. A simple tool for sensitive documents.
How It Works
Upload
Drag & drop or browse your file. It stays in your browser — nothing is uploaded.
Compress
Our local algorithms process your file at your chosen quality setting.
Download
Save your optimized file instantly. No waiting, no server queues.
Supported Formats
Why Simple Compressor?
100% Private
Files are processed locally on your device. Nothing is ever uploaded to a server.
Instant Speed
No upload or download wait. Speed is limited only by your hardware, not your internet.
No Quality Loss
Smart algorithms target invisible data, preserving visual and auditory fidelity.
No Signup Required
No account, no limits, no watermarks. Just a clean utility tool.
Any Device
Works in any modern browser on desktop, tablet, or mobile.