Compress PDF
Reduce PDF file size by removing unused objects and optimizing content streams.
Original size:
Compression complete!
Original: → Compressed: ( reduction)
How To Use
- Upload PDF — Select the PDF file to compress.
- Compress — Click the compress button to optimize the PDF.
- Download — Get your compressed PDF with reduced file size.
How to Compress a PDF
Compressing a PDF reduces its file size by removing unused objects, redundant data, and optimizing content streams. This makes the PDF easier to email, faster to upload, and more efficient to store. PDF compression is useful for reducing the size of scanned documents, presentation files, and image-heavy PDFs.
This tool uses pdf-lib to re-save the PDF with optimized objects and stream compression. The process removes orphaned objects, compresses content streams, and eliminates redundant data while preserving the visual quality and structure of the document. The compression ratio varies depending on the original file's content and structure.
All processing runs locally in your browser. Your document never leaves your device. No file size limits, no uploads, no registration. This is the most private way to compress your PDF files.