How to Make a PDF File Smaller on Mac

Mac's Preview app often creates massive PDFs. Learn how to shrink them down for email attachments.

The Mac Preview Problem

Mac users frequently rely on the built-in Preview app to merge or export PDFs. However, Preview is notorious for ballooning file sizes. A 2MB file can easily become 50MB after simple edits in Preview, making it impossible to send via Gmail (which has a 25MB limit).

Compressing the File

Instead of fighting with Mac's Quartz filters, use Tuko's compressor:

  • Upload the massive PDF generated by Mac Preview.
  • Tuko will analyze the embedded images and downsample them intelligently.
  • Choose "Smart Mode" to preserve text quality while heavily compressing images.
  • Download the optimized file—often 80-90% smaller than the original.

Ready to try it?

Use our free Compress PDF tool to get your task done instantly and securely.

Open Compress PDF Tool

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