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Compress PDF

Reduce PDF file size client-side using pdf-lib. Works by re-serializing and optimizing the internal structure. Results vary by PDF.

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Max recommended ~50MB for browser performance

This tool uses pdf-lib to reload and re-save the PDF. It can help with bloated files but is not as aggressive as dedicated server-side compressors (which may use advanced techniques like image re-encoding).
All processing happens in your browser.