Compress PDF

Reduce PDF file size by up to 70% without major quality loss. Optimize for email attachments, web uploads, and storage savings.

Files never leave your device Always free No server uploads No sign-up No watermarks

Processing happens on your device — nothing is uploaded.

How It Works

Upload your PDF

Drop a PDF file onto the drop zone. Everything is processed locally — nothing leaves your device.

Choose compression level

Pick a preset (Web, Balanced, Print, Maximum) or fine-tune quality and page scale manually.

Download the smaller PDF

Click Compress — your reduced-size PDF is ready in seconds, with text and images intact.

Frequently Asked Questions

What is Compress PDF?

Compress PDF is a free, browser-based tool on TitanFile that lets you reduce PDF file size by up to 70% without major quality loss. Optimize for email attachments, web uploads, and storage savings. Everything runs locally on your device — no files are ever uploaded to any server.

How do I use Compress PDF?

Open the Compress PDF page, add your file or enter your data, adjust any settings, then click the action button. Your result is ready instantly — no sign-up or installation required.

Are my files private?

Yes — all processing happens entirely in your browser using JavaScript. Your files and data never leave your device and are never uploaded to any server. We cannot see your files even if we wanted to.

Does this work offline?

Once the page has loaded, Compress PDF works without an internet connection. You can install it as a PWA to your home screen for instant offline access.

Is there a file size limit?

There is no server-side limit because everything runs locally in your browser. The practical limit is your device's available memory. Most modern devices handle files up to several hundred MB without issue.

Why is this free?

TitanFile is ad-supported and passion-driven. We believe powerful tools should be accessible to everyone. Compress PDF — like every tool on TitanFile — will always be free with no paywalls, watermarks, or hidden fees.