Compress PDF Online

Compress PDF files to reduce size while keeping them readable — perfect for email and uploads. Free, private, and processed in your browser.

Your files never leave your device. Free, no sign-up, no watermark.

Compress PDF online — reduce PDF file size free

Reduce your PDF file size with our free online PDF compressor. Large PDFs full of high-resolution scans and images can be too big to email or upload — this tool shrinks them down while keeping your document clear and readable.

Compression runs entirely in your browser, so your files stay private and nothing is sent to a server. It's the fast, secure way to make a PDF smaller for email attachments, web forms, and file-size limits.

Popular uses

• Make a PDF small enough to email
• Meet upload size limits on portals and forms
• Reduce scanned document file sizes
• Save storage space on large PDF archives

Also known as: reduce PDF size, shrink PDF, make PDF smaller, PDF compressor online free, lower PDF file size.