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How to Use
- 1Upload your PDF file.
- 2Click Compress PDF to optimize the document.
- 3Download the compressed file instantly.
- 4Check before/after sizes to compare savings.
About Compress PDF
The Compress PDF tool rebuilds your document with optimized PDF object streams to reduce file size while preserving all pages and their content. The before/after size comparison lets you see exactly how much space you saved.
PDF compression is essential when you need to meet email attachment limits (typically 10–25 MB), upload documents to portals with file size caps, or speed up downloads for recipients with slower connections. Even modest reductions can make the difference between a file that sends and one that gets rejected.
Results vary depending on how the original PDF was created. Documents with embedded high-resolution images, unused fonts, or redundant object streams tend to compress significantly. PDFs that are already optimized may show little or no reduction — this is expected behavior, not a limitation.
All compression runs locally in your browser. Your PDF is never uploaded to any server, making this tool safe for tax documents, legal filings, medical records, and any file you would not want stored on a third-party service.
Frequently Asked Questions
Will quality change after compression?
Most documents keep visual quality, but final size reduction depends on how the original PDF was created.
Does this always reduce file size?
Not always. Some PDFs are already optimized and may show little or no reduction.
Is my PDF uploaded anywhere?
No. Compression runs locally in your browser.