Compress PDF Files and Reduce Size Online

Make your PDF files smaller for easy sharing and storage. Our free compressor reduces file size while maintaining the best possible quality, all securely in your browser.

Open Compressor How it works
Pro tip: Our tool uses smart compression to balance file size and quality, perfect for emailing or web uploads.
Processed
+1,300,000 files
Rating
4.8/5 (1300+)

Compress PDF — Tool

Upload your PDF to begin. The tool will automatically reduce its file size while optimizing for quality.

Your files are always private. The entire compression process runs securely in your browser.

How to Compress a PDF — Step by Step

Reduce the size of your PDF file in a few simple clicks.

  1. Open the widget — click “Open Compressor” or scroll to the tool on this page.
  2. Upload your PDF file — drag & drop your document or select it from your computer.
  3. Automatic Compression — the tool will instantly analyze and compress your file, intelligently reducing its size.
  4. Download Your Optimized PDF — click the download button to save your new, smaller PDF file.

Common use cases

  • Making large PDF files small enough to send as email attachments.
  • Reducing the size of documents for faster uploading to websites or cloud storage.
  • Optimizing PDFs for faster loading and viewing on mobile devices.
  • Saving disk space by shrinking large archives of documents.

Why Use Our Free PDF Compressor?

Our tool is designed to provide the best balance of size and quality, with a focus on privacy.

Privacy-First

All compression happens in your browser. Your confidential files are never uploaded to any server.

Smart Quality Optimization

Our tool intelligently reduces file size by optimizing images and removing redundant data without sacrificing readability.

Fast & Simple

No complex settings to worry about. Just upload your file and let our tool do the heavy lifting in seconds.

No Watermarks, No Limits

Compress as many PDFs as you like for free, with no software, sign-ups, or watermarks applied.

Tips & Best Practices for Compression

  • The most significant size reduction comes from compressing PDFs that contain large, high-resolution images.
  • If your PDF is mostly text, the size reduction will be less dramatic but still noticeable.
  • For maximum compression where quality is less of a concern, you can often choose a lower quality setting if the tool provides one.
  • Always check the compressed file to ensure the quality is still acceptable for your needs before deleting the original.

Frequently Asked Questions

Ready to make your PDF smaller?

Open the compressor, upload your file, and get an optimized, smaller PDF in seconds. It's fast, private, and completely free.

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