Compress PDF

Reduce PDF file size securely in your browser. (Basic Optimization)

100% BROWSER-BASED

Click to upload PDF

Select a PDF file

/ HOW TO USE

How to Use Compress PDF

This tool runs entirely in your browser. Upload your file, make your changes, and download the result. Your files never leave your device — everything is processed locally for maximum privacy.

/ FEATURES

Key Features

100% Client-Side Processing

No File Size Limits

Completely Free

Privacy Focused

Instant Results

Works Offline

/ USE CASES

Common Use Cases

—Reduce file size for email attachments
—Optimize PDFs for web upload
—Save storage space on your device
—Speed up PDF loading times

/ FAQ

Frequently Asked Questions

How much compression can I expect?

Compression results vary based on the original PDF content. Image-heavy PDFs typically see 30-70% size reduction, while text-heavy PDFs may see less compression.

Will compression affect quality?

Our tool uses smart compression that balances file size with quality. Text remains crisp, and images are optimized without significant visual degradation.

/ YOUR PRIVACY

Your Privacy is Guaranteed

Unlike other tools that upload your files to servers, ToolBox processes everything locally in your browser.

No server uploads

Instant processing

Works offline