Compress for email
Input15MB PDF
Options
quality: Cân bằng
→Output~4MB PDF (-73%)
🎯Send email under 5MB
Compress PDF
Reduce PDF file size while preserving quality
Drag & drop files here
or click to choose files
How to compress pdf in 3 Steps
1
Upload the PDF file to compress
2
Choose the appropriate compression level
3
Click compress PDF and download the smaller file
About the Compress PDF Tool
Compress PDF online reduces file size by up to 80% while maintaining readable quality. BetaPDF offers 5 compression levels from lossless to maximum, plus custom DPI and JPEG quality settings for professionals.
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Up to 80% Size Reduction
"Maximum" compression reduces a 50MB scan to ~8MB. Perfect for email attachments and size-limited upload systems.
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5 Flexible Compression Levels
From lossless (100% quality preserved) to maximum (smallest size). "Custom" mode lets you choose DPI and JPEG quality.
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Smart Image Optimization
Automatically detects and compresses embedded images. Text and vectors remain crisp and sharp.
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Detailed Results Display
After compression, shows before/after file size and percentage reduction so you can evaluate the result.
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BetaPDF combines two compression techniques: embedded image optimization (DPI reduction, JPEG re-encoding) and file structure optimization (removing redundant data, linearization). Lossless mode only optimizes structure without touching images.
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Ideal for: email attachments under 5MB, uploading to document management systems, sharing via messaging apps. If the file is too large, try splitting the PDF into chapters first, then compress each part. After compressing, you can add a watermark to protect your document.
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Usage Examples
Maximum compression
Input50MB scanned PDF
Options
quality: Tối đa
→Output~8MB PDF (-84%)
🎯Save storage space
Lossless compression
Input20MB design PDF
Options
quality: Không mất chất lượng
→Output~15MB PDF (-25%)
🎯Send important files while preserving original quality
Frequently Asked Questions
Depends on file content. Average 40-80% reduction with "Maximum" level.
"Lossless" level preserves 100% image quality. "Light" has nearly no loss. "Maximum" reduces image DPI but remains readable.
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