Compress 20 Mo PDF
20 Mo PDF? Reduce it to ~4 Mo.
Drop your PDF here
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Latest update : February 13, 2026
How to compress a 20 Mo PDF?
Compressing a file of 20 Mo is simple and fast with FreeConversion. Our tool uses advanced compression algorithms to reduce the size of your scans, portfolios without sacrificing readability.
By reducing your 20 Mo file to 4 Mo, you consume less bandwidth when sharing it and save valuable storage space on your device or cloud.
How to compress a 20 Mo PDF
Drag and drop your PDF into the tool above
Choose the compression level adapted to your needs
Download your PDF reduced to around 4 Mo
What makes a PDF so large (20 Mo)?
A 20 Mo PDF typically contains high-resolution images, complex vector graphics, or embedded fonts. Scanned documents, presentations converted to PDF, and reports with many photos are the most common cases. The good news: these elements can be optimized without losing readability through smart compression.
Common document types
Professional reports
20 Mo reports with charts and tables compress very well.
PDF presentations
Slides converted to PDF often contain oversized images.
Scanned documents
Scans generate large files — compression can reduce by 70%+.
Forms with images
Illustrated forms benefit from targeted image compression.
Technical compression details
Our algorithm analyzes each component of your 20 Mo PDF: images (JPEG, PNG), fonts, metadata, and internal structure. Images are recompressed with an optimized ratio, fonts are subsetted (only used characters are kept), and redundant metadata is removed. Result: a reduction to approximately 4 Mo with no visible impact on document quality.
Best practices
- ✓Before compressing, check that your 20 Mo PDF doesn't contain duplicate pages
- ✓Use the "Medium" compression level for an optimal quality/size balance
- ✓For text-heavy documents, maximum compression gives excellent results
- ✓PDFs with many images benefit the most from compression
- ✓Test the result before sharing — visual quality is generally preserved
FAQ (20 Mo PDF)
Can I use FreeConversion for professional documents?
Absolutely! FreeConversion is perfect for professional documents. Since all processing happens locally in your browser, your confidential documents remain 100% private.
Can I compress scanned PDFs?
Yes! Scanned PDFs are often very large and benefit greatly from compression. You can typically reduce their size by 50-80%.
How does PDF compression work?
Our tool uses advanced algorithms to optimize images, remove unnecessary metadata, and reorganize the internal PDF structure for minimal size while preserving visual quality.
Will the compressed PDF be compatible everywhere?
Yes, compressed PDFs remain in standard PDF format and open in all PDF readers (Adobe Reader, browsers, mobile apps, etc.).