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Compress PDF

Reduce PDF file size in your browser. No uploads, no account — 100% local processing.

Drop files here

Max 15 MB

PDFMax 15 MB
No signup needed · No watermarks · 100% Private

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.

1

Choose your PDF

Drag and drop your PDF document. It stays 100% private in your browser.

2

Select preset

Choose 'Screen' for web use, 'eBook' for reading, or 'Printer' for high-quality output.

3

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

1

Upload

Drag & drop or browse your file. It stays in your browser — nothing is uploaded.

2

Compress

Our local algorithms process your file at your chosen quality setting.

3

Download

Save your optimized file instantly. No waiting, no server queues.

Supported Formats

PDF

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.

Frequently Asked Questions

Never. SimpleCompressor runs entirely in your browser using pdf-lib. Your PDF bytes never leave your device.