Compress PDF
Free online tool to compress pdf securely and instantly.
Compress PDF
Reduce the file size of your PDF document for easier sharing and faster uploads.
Drop your PDF here
or click to browse from your computer
Compression Level
Your Privacy & Data is 100% Safe
Your Privacy & Data is 100% Safe
All uploaded documents and input details are processed entirely within your browser. We do not store, copy, or transmit any of your data to our servers. Your information remains strictly confidential and secure.
Free Online PDF Compressor — Reduce PDF File Size
Compress PDF is an essential tool designed to drastically reduce the file size of your documents. Whether you need to meet a strict upload limit on a job portal, government website, or simply want to send a large report via email, this tool optimizes your PDF without ruining readability.
How to Compress a PDF
- Upload PDF: Drag and drop the heavy PDF file into the upload zone.
- Select Compression Level: Choose between 'Recommended' (perfect balance of quality and size) or 'Extreme' (strips out all hidden metadata for maximum reduction).
- Download: Click Compress to instantly optimize the document's internal structure and download the smaller file.
Does it ruin image quality?
Unlike basic image rasterizers, our client-side compressor uses advanced object streams and metadata stripping to reduce file size mathematically. It does not indiscriminately blur or downsample your critical vector charts or high-resolution text, meaning your documents remain crisp and professional.