PDF Compressor
Reduce PDF file size for email and sharing. Compress PDFs directly in your browser — fast and private.
Compress PDF files
Upload or drag & drop PDF files to reduce file size while keeping documents readable
PDF · Up to 150 MB
Compress PDF online to reduce file size for email, upload and sharing. This free PDF compressor helps you shrink large PDF files while keeping text readable and pages clear. Choose compression level, optimize document size and download a lighter PDF in seconds. Works directly in your browser — no uploads, no limits, fully private.
How to compress a PDF file
- Upload your PDF file using drag & drop or file selection.
- Choose compression level (low, medium or high) depending on quality and file size needs.
- Compress the PDF to reduce file size for email, web upload or storage.
- Download the optimized PDF and compare file size reduction.
Why use this PDF Compressor
Compress large PDF files to smaller sizes for email attachments, websites, forms and faster sharing.
Choose between different compression levels to balance PDF quality and file size depending on your use case.
Make PDFs lightweight for faster uploads, quicker downloads and better performance across devices.
All PDF compression runs locally in your browser. Files are never uploaded or stored.
Supported formats
PDF documents
Compressed PDF file
Client-side processing (no uploads)
Frequently asked questions
Upload your PDF, choose compression level and reduce file size directly in your browser without installing software.
PDF size can typically be reduced by 30–80% depending on content, images and selected compression level.
Yes, higher compression reduces image resolution and quality. Medium compression is usually the best balance between size and readability.
Yes. This tool is ideal for reducing PDF size to meet email limits such as 10MB or 25MB.
Yes. Files are processed locally in your browser. Nothing is uploaded or stored on servers.
Large PDFs usually contain high-resolution images, embedded fonts or scanned pages. Compression reduces these elements to shrink file size.
Medium compression works best for most cases. Use high compression for maximum size reduction or low compression for better quality.