Compress PDF Online
Compress PDF files online to reduce file size for email and web uploads. Real in-browser compression with before and after size stats.
Select or Drag & Drop File Here
Optimize and shrink bulky PDF documents for email attachments and web upload limits without sacrificing readability or compromising confidentiality.
How to Use Compress PDF (Step-by-Step Guide)
- 01 Select or drag & drop the PDF file you wish to compress.
- 02 Choose a compression profile: Extreme, Recommended, or Low.
- 03 Click "Compress PDF" and download the optimized file showing exact saved bytes.
How Compress PDF Works & Key Features
Optimize and shrink bulky PDF documents for email attachments and web upload limits without sacrificing readability or compromising confidentiality.
Built on a client-side first architecture, your documents and images are never transmitted across the network to third-party endpoints. All parsing, processing, and generation occur within your browser thread, eliminating upload waiting times while giving you complete privacy.
Privacy Guarantee
Compression executes locally via client-side canvas rasterization and PDF stream reconstruction. No documents are uploaded.
Technical Specifications & Limits
Text-only documents with no raster images are already at minimum size and will not shrink significantly.
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Open Tool →Frequently Asked Questions (FAQ)
Q. How much can I reduce my PDF size?
Image-heavy scanned PDFs and presentations can often be compressed by 40% to 80% without noticeable quality loss.
Q. Are my confidential documents safe?
Yes! Processing executes entirely inside your browser sandbox without server interaction.