Compress PDF Document Size Online

Shrink your large PDF documents to make them email-friendly and compliant with government upload portals. PDFMount optimizes image sizes and flattens redundant font headers.

How to use

  1. Choose the PDF file you wish to compress.
  2. Select your preferred compression level (Recommended, Extreme, or Less Compression).
  3. Click the 'Start' button to execute compression.
  4. Download your optimized PDF file.

Frequently Asked Questions

Does compressing a PDF ruin its image quality?

No. Our recommended setting uses a smart compression algorithm that reduces file size dramatically while maintaining high visual readability.

How can I reduce a PDF to under 100KB?

Try selecting the 'Extreme Compression' setting. This applies strong optimization suitable for basic text sheets and scanned forms.

Many government portals, job application forms, and email clients enforce strict size limits. PDFMount's compression tool uses advanced algorithms to compress embedded images, remove redundant metadata, and clean up orphan streams.

For professional portfolios and legal briefs, choose 'Less Compression' to keep image DPI high while stripping out underlying bloat.

Why use PDFMount?
  • 100% Free — no watermarks, no hidden fees
  • Secure — files auto-deleted after 60 minutes
  • No sign-up required — start immediately