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:
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Upload document to the platform
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Select "Precision Mode"
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Set target size (MB/KB supported)
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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
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Go to "File › Save As Other › Optimized PDF"
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Adjust compression settings
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Use "Estimate Space Usage" for preview
Method 3: Built-in System Compression
For basic needs:
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Right-click file › Compress (Mac/Windows)
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Adjust resolution via Preview app
Pro Tips:
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Maintain 150+ dpi for mixed-content documents
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Use lossless compression for legal contracts
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Avoid multiple compression cycles