Compress PDF
Reduce file size significantly while maintaining quality.
Click to Upload PDF
or drag and drop file here
filename.pdf
0 MB
Max Compression
Best Quality
Note: To achieve maximum browser-based compression, this tool converts pages to optimized images. Text will no longer be selectable.
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Compress PDF Files Online – Reduce Size Free
Is your PDF too large to email or upload? Our Free PDF Compressor significantly reduces the file size of your documents directly in your browser.
Private & Secure
Processing happens locally. Your confidential documents never travel to a cloud server.
High Compression
Adjust compression levels to get the perfect balance between quality and file size.
Cross Platform
Works seamlessly on Windows, Mac, Linux, iOS, and Android browsers.
Frequently Asked Questions
This tool re-processes your PDF by optimizing the visual layers. It converts pages into high-efficiency images, removing hidden metadata and unused fonts to drastically lower the file size.
To achieve maximum compression purely in the browser (without a heavy server), we use a technique called "rasterization." This turns text into images. While this creates the smallest possible file, it does mean text selection is removed.
No artificial limits! However, because the processing is done by your computer's memory (RAM), very large files (e.g., 100+ pages) might take longer to process or require a more powerful device.