Compress PDF files online to reduce their size. Shrink large PDFs for email, web upload, or storage — free, local processing, no server upload.
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This utility is a high-performance node optimized for modern browser environments. All data processing is executed client-side, ensuring zero knowledge transfer to external servers.
Upload your PDF, select your compression level (screen, ebook, or print quality), and click Compress. Download the smaller file instantly — no signup, no watermark.
Compression varies by content: PDFs with photos typically compress 40-80%. Text-only PDFs may only compress 10-30%. Scanned document PDFs with high-res images can often be reduced by 60-90%.
It depends on the mode. 'High Fidelity' mode minimizes quality loss, keeping text sharp. 'Maximum Compression' reduces quality more to achieve the smallest file size. Choose based on your use case.
Gmail and Outlook support attachments up to 25MB. For sharing via email, aim to keep PDFs under 10MB. This tool can typically get most PDFs under that limit.
No. Compression runs entirely in your browser. Your PDF file never leaves your device — making it safe for compressing confidential or sensitive documents.