Free PDF Compressor - Reduce File Size Online

Reduce PDF file sizes while maintaining quality. Choose your compression level and get smaller files perfect for sharing. All processing happens in your browser.

Compress PDF Files

Reduce PDF file size efficiently.

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Drop PDF file here to compress

or click to select a PDF file

Why Choose Our PDF Compressor?

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100% Secure

Files stay on your device.

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Smart Size Reduction

Optimize file size without losing quality.

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Completely Free

No limits or registration required.

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Lightning Fast

Instant compression in your browser.

How to Compress PDFs

1

Upload PDF

Drop or select your PDF file.

2

Choose Level

Select compression quality.

3

Download

Get your compressed PDF.

Free PDF Compressor - Reduce File Size Without Quality Loss

Compress PDF files instantly with our free online compression tool. Reduce file sizes by up to 90% while maintaining document quality and readability. Perfect for email attachments, web uploads, and storage optimization. All compression happens locally in your browser for maximum security.

Choose from three compression levels: low compression (best quality), medium compression (balanced), or high compression (smallest file size). Our intelligent algorithm preserves text clarity, image quality, and document formatting while significantly reducing file size.

How to Compress PDF Files Online

  1. Upload PDF: Click "Select PDF File" or drag and drop your document into the compression tool
  2. Choose Compression Level: Select low, medium, or high compression based on your needs
  3. Process File: Click "Compress PDF" to start the optimization process
  4. Download Result: Get your compressed PDF with significant size reduction

Why Choose Our PDF Compressor?

  • Smart Compression: Intelligent algorithms that preserve quality while maximizing size reduction
  • Multiple Compression Levels: Choose the perfect balance between file size and quality
  • Maintain Readability: Text remains crisp and clear even after heavy compression
  • Privacy Focused: All compression happens locally - your files never leave your device
  • No File Size Limits: Compress large PDFs without restrictions
  • Instant Results: Fast compression with real-time progress tracking
  • Quality Preservation: Advanced algorithms maintain document integrity
  • Free & Unlimited: No registration, subscriptions, or usage limits

Compression Level Guide

  • Low Compression (Best Quality): Minimal size reduction with maximum quality preservation. Perfect for documents with important images or graphics that must remain crystal clear.
  • Medium Compression (Balanced): Optimal balance between file size and quality. Recommended for most business documents, reports, and presentations.
  • High Compression (Smallest Size): Maximum size reduction for files that need to fit strict size limits. Ideal for email attachments and web uploads.

When to Use PDF Compression

  • Email attachments that exceed size limits
  • Web uploads with file size restrictions
  • Cloud storage optimization to save space
  • Faster document sharing and downloads
  • Mobile device storage conservation
  • Website loading speed optimization
  • Archival storage for long-term document management
  • Bandwidth-limited environments

Frequently Asked Questions

How much can I reduce my PDF file size?

Size reduction varies depending on your document content and chosen compression level. Typically, you can expect 30-90% reduction. Documents with many images compress more than text-only files.

Will compression affect document quality?

Our intelligent compression preserves text quality completely. Images may show minimal quality reduction depending on the compression level chosen. Text remains perfectly readable at all compression levels.

Is there a file size limit for compression?

No artificial limits are imposed. The only constraint is your device's available memory. Most standard business documents compress without issues.

Can I compress password-protected PDFs?

Yes, our tool can compress password-protected PDFs. The password protection will be maintained in the compressed file.

Which compression level should I choose?

Use low compression for documents with important graphics, medium for typical business documents, and high compression when you need the smallest possible file size for email or web uploads.

Does compression work on mobile devices?

Yes, our PDF compressor works perfectly on smartphones and tablets. The tool is optimized for mobile browsers and touch interfaces.

Can I compress multiple PDFs at once?

Currently, our tool processes one PDF at a time to ensure optimal compression quality. You can compress multiple files sequentially.

Are my files secure during compression?

Absolutely. All compression happens locally in your browser. Your PDF files are never uploaded to external servers, ensuring complete privacy and security.

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