Compress PDF
Compress your PDF files to reduce file size while maintaining quality. Perfect for email and web sharing.
Drag & drop a PDF file here, or click to select
PDF files only • Maximum 100MB file size
No PDF file selected
Upload a PDF file to compress it and reduce its size while maintaining quality.
Complete PDF Tool Suite
Discover our comprehensive collection of PDF tools designed to handle all your document needs
JPG to PDF
Convert JPG images to PDF format
Merge PDF
Combine multiple PDF files into one
Compress PDF
Reduce PDF file size efficiently
PDF to PNG
Convert PDF pages to PNG images
PDF to Text
Extract text content from PDF files
Split PDF
Split PDF into separate pages
Edit PDF
Edit and annotate PDF documents
Organize PDF
Organize and rearrange PDF pages
How to Compress PDF Files Online
Our PDF compressor makes it easy to reduce file sizes while maintaining quality. Follow these simple steps to optimize your PDF documents instantly with our smart compression technology.
Upload PDF File
Drag and drop your PDF document or click to select the file from your device. Supports files up to 100MB in size for compression optimization.
Choose Compression Level
Select from High Quality (30% reduction), Balanced (60% reduction), or Small File (80% reduction) based on your quality and size requirements.
Download Compressed PDF
Click compress and your optimized PDF will be generated instantly. Download your smaller file immediately with preserved quality.
Privacy Protected
All compression happens locally in your browser. Your PDF files never leave your device.
Lightning Fast
Compress PDF files in seconds with our optimized compression algorithms.
Quality Balance
Smart compression maintains visual quality while achieving significant size reductions.
Multiple Compression Levels
Choose from three optimization levels to balance quality and file size perfectly.
Mobile Friendly
Works perfectly on all devices - desktop, tablet, and mobile browsers.
No Registration
Start compressing immediately without creating accounts or providing personal information.
Why Choose Our PDF Compressor?
Email Attachment Optimization
Compress large PDF files to meet email size limits and attachment restrictions. Perfect for business communications, reports, and document sharing via email platforms.
Web Performance Enhancement
Optimize PDF files for faster website loading and better user experience. Ideal for online publications, digital magazines, e-books, and web-based document libraries.
Storage Space Management
Reduce storage costs and manage disk space more efficiently by compressing large document archives. Essential for businesses with extensive digital document collections and cloud storage needs.
Mobile Data Conservation
Smaller PDF files consume less mobile data and download faster on slower connections. Particularly beneficial for field workers, remote teams, and users with limited bandwidth.
Upload PDF File
Drag & drop or click to select
Choose Quality Level
Select compression strength
Download Compressed
Get your optimized file
Frequently Asked Questions
Everything you need to know about compressing PDF files online
How do I compress a PDF file online?
Simply upload your PDF file by dragging and dropping it into the compression area, choose your desired compression level (High Quality, Balanced, or Small File), and click "Compress PDF". Your optimized file will be ready for download instantly.
Is PDF compression free?
Yes, our PDF compressor is completely free to use. There are no hidden fees, subscription requirements, or limitations on the number of files you can compress.
What's the difference between compression levels?
High Quality reduces file size by ~30% with minimal quality loss, Balanced achieves ~60% reduction with good quality preservation, and Small File provides ~80% reduction for maximum space savings. Choose based on your quality vs. size preferences.
Is my data secure when compressing PDFs?
Absolutely! All PDF compression happens directly in your browser using client-side processing. Your documents never get uploaded to our servers, ensuring complete privacy and security for your sensitive files.
What file size limits apply to PDF compression?
You can compress PDF files up to 100MB in size. This accommodates most business documents, presentations, and image-heavy files. Larger files may require splitting before compression.
Will compression affect PDF text and searchability?
No, text content in PDFs remains fully searchable and selectable after compression. Our compression primarily optimizes images and removes redundant data while preserving all text properties and metadata.
Can I compress password-protected PDFs?
Currently, our compressor works best with unprotected PDF files. If your PDF is password-protected, you may need to remove the password protection first before compressing the document.
What browsers support PDF compression?
Our PDF compressor works on all modern browsers including Chrome, Firefox, Safari, and Edge on desktop, tablet, and mobile devices. No additional software or plugins are required.
Still have questions about our PDF compression tool?
Complete Guide to PDF Compression
PDF compression is an essential skill for anyone who works with digital documents. Whether you need to reduce file sizes for email attachments, optimize documents for web delivery, or save storage space, our PDF compressor provides a fast, secure, and intelligent solution that balances file size reduction with quality preservation.
Understanding PDF Compression
PDF files can become large due to embedded images, fonts, graphics, and formatting data. Compression reduces file size by optimizing these elements using various techniques: image resampling and compression, font subsetting, removing unused objects, and streamlining the internal structure. Modern compression algorithms can achieve significant size reductions while maintaining document readability and visual quality.
Key Benefits of PDF Compression
- Faster Email Delivery: Compressed PDFs fit within email attachment limits and upload faster, ensuring reliable document delivery.
- Improved Web Performance: Smaller files load faster on websites, improving user experience and search engine rankings.
- Reduced Storage Costs: Optimize your document archives to save disk space and reduce cloud storage expenses.
- Mobile-Friendly Documents: Compressed files download faster on mobile networks and consume less data.
When to Compress PDF Files
PDF compression is ideal when sending documents via email that exceed attachment limits, uploading files to websites or document management systems, sharing documents on messaging apps with file size restrictions, archiving large document collections to save storage space, or distributing documents to users with slow internet connections.
Your Privacy is Protected
Our PDF compressor processes all files locally in your browser. Your documents are never uploaded to any server, ensuring complete privacy and security. This makes it safe to compress confidential business documents, financial records, legal contracts, medical records, or any sensitive information without privacy concerns.
Choosing the Right Compression Level
We offer three compression levels to match your needs: High Quality (30% reduction) preserves maximum visual fidelity for professional documents, Balanced (60% reduction) provides good quality with significant size savings for most use cases, and Small File (80% reduction) achieves maximum compression for archiving or web delivery where file size is the priority.
Efficient Document Processing
Upload PDF files up to 100MB and compress them instantly. Our optimized compression engine processes documents quickly while maintaining quality. The compression preview shows you exactly how much space you'll save before downloading the optimized file.
Works on All Devices
Our PDF compressor works on any device with a modern web browser - Windows, Mac, Linux, iOS, and Android. No software installation required. Simply upload your PDF and compress it instantly on your phone, tablet, or computer. Perfect for compressing documents on the go.
Common Use Cases
Business Use
- Compress reports and presentations for email
- Optimize documents for corporate websites
- Reduce archive storage requirements
- Prepare files for document management systems
Personal Use
- Shrink scanned documents and receipts
- Compress e-books for e-readers
- Reduce photo album PDF sizes
- Optimize documents for cloud backup
Troubleshooting Tips
If compression results are not satisfactory, try a different compression level. Documents with mostly text compress well at any level, while image-heavy files may need higher quality settings to maintain visual clarity. If the compressed file is still too large, consider splitting the document and compressing sections separately. Password-protected PDFs may need to be unlocked before compression.
Ready to Compress Your PDF Files?
Start compressing your PDF documents now. It's free, fast, and completely secure. Reduce file sizes without sacrificing quality.
Compress PDF Now