How to Compress PDF to Exact File Size?

Oversized PDF files often cause transmission issues. Here are 3 professional solutions for precise size control:

Method 1: Smart Online Compression Tool

Try PDFSail for intelligent processing:

1. Upload document to the platform

2. Select "Precision Mode"

3. Set target size (MB/KB supported)

4. Download optimized file

The AI-powered system automatically balances image quality and text clarity, ideal for email attachments and cloud storage.

Method 2: Adobe Acrobat Pro Method

1. Go to "File › Save As Other › Optimized PDF"

2. Adjust compression settings

3. Use "Estimate Space Usage" for preview

Method 3: Built-in System Compression

For basic needs:

1. Right-click file › Compress (Mac/Windows)

2. Adjust resolution via Preview app

Pro Tips:

• Maintain 150+ dpi for mixed-content documents

• Use lossless compression for legal contracts

• Avoid multiple compression cycles