PDF ToolsUpdated
Compress PDF
Compress PDF files online for free. Reduce PDF file size by optimizing internal structure while preserving content quality.
Upload an image
Upload a PDF to compress it
Your Privacy Matters
- All processing happens in your browser — no uploads
- Your files never leave your device
- No data stored, logged, or shared with third parties
- Works offline after initial page load
Features
Secure processing — your documents never leave your device
High-quality output preserving original formatting
Support for multiple PDF files simultaneously
Fast processing optimized for large documents
How to Use Compress PDF
1
Open the Tool
Navigate to the Compress PDF page to get started.
2
Provide Input
Upload your file, paste your content, or enter your data into the tool.
3
Configure Options
Adjust any available settings to customize the output to your needs.
4
Get Results
Process your data and download, copy, or save the result instantly.
Frequently Asked Questions
How much can the PDF be compressed?▼
Compression results vary depending on the PDF content. The tool uses object stream compression which can reduce file size by 10-30% on average.
Does compression affect quality?▼
This compression method optimizes the PDF structure without re-encoding images. Content quality and formatting are preserved.
Is my data safe?▼
Yes. All processing happens in your browser using pdf-lib. Your files never leave your device.