Reduce PDF file size — 100% private, all processing in your browser
Drop a PDF file here or click to browse
Single PDF file only
Compressing your PDF…
Upload your PDF, choose a compression level (low, medium, or high), and click Compress. The tool reduces file size by stripping unused data, metadata, and optimizing the PDF structure.
Yes, completely free with no file size limits, no signup required, and no watermarks.
Yes. All processing happens in your browser using pdf-lib. Your files are never uploaded to any server.
Results vary by file. Low compression typically saves 10-20%, medium saves 20-40%, and high saves 30-60%. PDFs with many unused objects see the biggest savings.
Low and medium compression preserve visual quality. High compression removes more unused data and may rarely affect embedded objects. Text content is always preserved.
The tool requires PDFs to be unlocked. Please remove password protection before compressing.
It removes unused objects, strips metadata, removes duplicate fonts, discards embedded thumbnails, and rewrites the PDF with optimized structure.
All modern browsers including Chrome, Firefox, Safari, and Edge are supported.