PDF Compress
Shrink large PDFs so they are easier to email and upload. The tool optimises and re-saves your document locally, reducing file size without sending data to any server.
About the PDF Compress
Shrink large PDFs so they are easier to email and upload. The tool optimises and re-saves your document locally, reducing file size without sending data to any server.
The PDF Compress is part of TechToolsCenter — a free, privacy-first collection of 30+ online tools. Like every tool here, it runs 100% in your browser, so your data stays private and results are instant. There is no sign-up, no watermark and no limit on how many times you can use it.
How to use the PDF Compress
- 1
Open the PDF Compress
Open the PDF Compress — it loads instantly and works entirely in your browser. No sign-up or installation is needed.
- 2
Enter your details
Fill in the fields or paste your content. Everything updates in real time so you always see an accurate live preview.
- 3
Review the live preview
Check the result in the preview panel. Use Undo, Redo or Reset at any time — your work is saved to your browser automatically.
- 4
Copy, download or share
When you're happy, copy the result, download the file, or share it. Nothing is ever uploaded to a server — it all stays on your device.
Why use our PDF Compress?
- 100% free with no sign-up or hidden limits
- Runs entirely in your browser — your data never leaves your device
- Fast, responsive and works great on mobile
- Saves your recent work automatically via local storage
Frequently asked questions
The tool optimises document structure and image streams. Text stays crisp; heavily image-based PDFs see the largest savings.