PDF Compressor Tool
PDF Compressor
Reduce the file size of your PDFs online for free, without sacrificing quality.
Drag & Drop a PDF here or Click to Upload
Why Use Our PDF Compressor?
Effective Compression
Our tool intelligently reduces file size by optimizing the PDF structure and content.
Completely Secure
Your files are processed directly in your browser. Nothing is ever uploaded to a server.
Incredibly Fast
No waiting in queues. Your PDF is compressed instantly, ready for download in seconds.
Always Free
Unlimited use without any cost, watermarks, or registration required.
Frequently Asked Questions
How do you compress the PDF without uploading it?
We use a powerful JavaScript library called `pdf-lib` that runs entirely in your web browser. It reads your PDF file, analyzes its structure, removes redundant data, and rebuilds an optimized version of the file, all on your own computer. Your data never leaves your device.
Will compressing my PDF reduce its quality?
Our "Recommended" compression setting focuses on reducing file size without affecting the visual quality of text and images. The "High Compression" setting may slightly lower the quality of embedded images to achieve a smaller file size, but text will remain sharp.
What kind of PDFs benefit most from compression?
PDFs with many high-resolution images, embedded fonts that aren't fully used, or those created by less-optimized software will see the biggest reduction in file size. Simple text-only documents may not see a significant change.