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OSX Preview Bug: Shrink an Image to 16 Terabytes?

Apple Preview is a built-in application on macOS designed for viewing and interacting with various file types, primarily images and PDFs. It is a versatile tool offering features extending beyond simple file viewing, making it valuable for personal and professional use.

Preview Features

  • File Viewing: Supports multiple file types, including PDF, JPEG, PNG, TIFF, and more.
  • PDF Editing and Annotation: Highlight, underline, or strikethrough text; add text boxes, notes, and comments; fill out forms and sign documents using a trackpad, camera, or saved signatures.
  • Image Editing: Provides basic editing tools like cropping, resizing, rotating, and adjusting colors; annotate images with shapes, text, and lines.
  • Document Management: Merge multiple PDFs, extract specific pages, and rearrange pages in a PDF with drag-and-drop functionality.
  • Export and Conversion: Allows exporting files in different formats, such as saving an image as a PDF or converting between file types.
  • Integration: Works seamlessly with other macOS applications like Mail and Messages for document sharing and integrates with iCloud for synchronization across Apple devices.

Apple Preview is a robust and user-friendly tool for handling a wide range of tasks, offering efficiency and simplicity for professionals. But today, I ran into this pretty cool (and ridiculous) bug. I wanted to resize an image using preview from 140px wide to 100px wide. Preview wouldn’t ever save it when I clicked OK. I think I figured it out – look at the Resulting Size (TB).

mac tb

Doh!

Note: This bug has been fixed in new versions of OSX.

Douglas Karr

Douglas Karr is a fractional Chief Marketing Officer specializing in SaaS and AI companies, where he helps scale marketing operations, drive demand generation, and implement AI-powered strategies. He is the founder and publisher of Martech Zone, a leading publication in marketing technology, and a trusted advisor to startups and enterprises… More »
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