Compress PDF is a free online tool that reduces the file size of your PDF documents while maintaining acceptable quality. Large PDFs are difficult to share via email, slow to download, and consume unnecessary storage space. This tool optimizes your PDFs to be significantly smaller.
The tool offers adjustable compression levels so you can find the right balance between file size and visual quality. Lower compression preserves more quality for documents with detailed images, while higher compression maximizes file size reduction for text-heavy documents.
All compression happens entirely in your browser. Your PDF files are never uploaded to any server, making this the safest option for compressing confidential documents. Simply upload, set your compression preference, and download the optimized file.
Drag and drop a PDF file or click to browse and select one from your device. The tool displays the current file size.
Select your preferred compression level: low compression for maximum quality, medium for balanced results, or high for maximum file size reduction.
Click the compress button to optimize your PDF. The tool shows the original and compressed file sizes for comparison.
Download the smaller PDF file. The compressed document is ready to share via email, upload to websites, or store efficiently.
Choose between low, medium, and high compression levels to balance file size and quality
See the original and compressed file sizes side by side to evaluate the compression results
Smart compression algorithms reduce file size while maintaining readable text and visible images
All compression happens in your browser. Your PDF files never leave your device
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