Central Tools

Free PDF Compressor

Compress PDF files online. Reduce PDF file size by removing metadata and optimizing structure.

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Advanced Feature Coming Soon

Effective PDF compression requires server-side processing to compress images and optimize content streams.

For now, try our other PDF tools: PDF Merger, PDF Splitter, or PDF Rotator.

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How to use Free PDF Compressor

1

Upload a PDF file.

2

The tool removes metadata and optimizes structure.

3

Download your compressed PDF.

Why use this tool?

Privacy

Removes hidden metadata from PDFs.

Smaller Files

Reduces file size for easier sharing.

Fast

Instant compression in your browser.

Free PDF Compressor - Reduce PDF File Size Online

Shrink large PDF documents to make them easier to email, upload, and share. Our PDF compressor uses smart optimization to reduce file size while maintaining the highest possible visual quality. All compression happens locally in your browser—no file uploads required, ensuring 100% privacy.

Quick How-To Guide

  1. 1Upload the large PDF file you want to compress
  2. 2Select your desired compression level (Balanced is recommended)
  3. 3Wait a few seconds for the tool to optimize the document structure
  4. 4View the reduction percentage and final file size
  5. 5Download the optimized PDF to your device

Why use our tool?

Smart optimization—reduces file size by optimizing images and removing redundant data
Multiple compression levels—choose between extreme, recommended, or low compression
100% client-side—processing happens on your device, so your data stays private
Maintain quality—advanced algorithms preserve text clarity and image resolution
Batch compression—optimize multiple PDF files simultaneously to save time
Instant preview—see the estimated final file size before downloading

Frequently Asked Questions

Find answers to common questions about using our tool, its features, and how it handles your data privacy.

Our "Recommended" setting is designed to significantly reduce file size without any noticeable loss in text quality. It primarily targets large images and invisible document metadata. If you choose "Extreme" compression, images might show slight artifacts, but text remains sharp and readable in all modes.
The reduction depends on the original content. PDFs with many high-resolution images can often be reduced by 50% to 90%. Documents that are primarily text will see smaller reductions (10-20%) as text is already very efficient. Our tool uses the latest compression standards to maximize savings.
Yes, it is the safest way to compress PDFs online. Unlike most "cloud" compressors that require you to upload your files to their servers, our tool works entirely in your browser. Your files never leave your computer, so your private data remains 100% secure.
Absolutely. Many email providers have a 20MB or 25MB limit. If your PDF is too large, our compressor is the perfect solution to get it under the limit while keeping it professional and high-quality for the recipient.
There are no hard limits. Since the compression happens on your computer, it depends on your device's performance. Most modern laptops can easily process PDFs up to 100MB or more. For exceptionally large files, ensure you have enough free RAM.
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