PDF Compressor
Compress PDF files online free with quality presets. Reduce PDF file size in your browser — private, secure, no uploads required. Maximum, High, Medium, and Low compression options.
Drop PDF files here
or click to browse
Supports PDF files up to 50MB • Max 5 files at once
PDF Compressor Features
Professional-grade pdf compressor designed for speed, security, and simplicity
Quality Presets
Four compression levels: Maximum, High, Medium, and Low. Choose the right balance of size vs quality.
Client-Side Processing
All compression happens in your browser. No files are uploaded to any server — completely private and secure.
Fast Compression
Optimized PDF processing with metadata removal and image recompression for maximum size reduction.
How PDF Compression Works
Simple three-step process to compress your PDFs
Upload PDF
Drag and drop your PDF files or click to browse. Supports files up to 50MB.
Choose Quality
Select from four compression presets — Maximum (smallest), High, Medium, or Low (best quality).
Download
Get your compressed PDF instantly. Compare original vs compressed size to see the savings.
Common Use Cases
Email Attachments
Reduce PDF size to meet email attachment limits (typically 25MB).
Web Uploads
Optimize PDFs for website uploads, forms, and document sharing platforms.
Storage Optimization
Save storage space by compressing large PDF documents while maintaining readability.
Security & Privacy — PDF Compressor
Data Handling
All PDF processing is performed locally in your browser using the pdf-lib library.
Privacy Protection
Your files never leave your device. No data is sent to any server, ensuring complete privacy.
Security Recommendations
Use High compression for the best balance. Use Maximum for email attachments where quality is less critical.
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