PDF Compress
Optimize PDF internal structure to reduce file size.
Upload the PDF to compress
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About PDF Compress
PDF Compress reduces the file size of your PDF documents, making them easier to email, upload, or share. Compression works by optimizing internal streams with no visible quality loss for most documents.
How to Compress a PDF
- 1Upload the PDF you want to compress.
- 2Select a compression level: standard or maximum.
- 3Click Compress and wait for processing to complete.
- 4Download the compressed PDF and compare the file sizes.
FAQ
How much smaller will my PDF get?
Results vary by content. PDFs with many images can be reduced by 50-80%. Text-only PDFs may see smaller reductions.
Will compression reduce image quality?
Standard compression optimizes file structure with minimal quality impact. Maximum compression may reduce image resolution slightly.
Is compression done on a server?
No. All compression happens locally in your browser using pdf-lib. Your files are never uploaded.
Can I compress a PDF multiple times?
You can, but successive compressions yield diminishing returns. The first pass typically achieves the greatest reduction.