GrandPerspective is a small utility application for macOS that graphically shows the disk usage within a file system. It can help you to manage your disk, as you can easily spot which files and folders take up the most space. It uses a so called tree map for visualisation. Each file is shown as a rectangle with an area proportional to the file's size. Files in the same folder appear together, but their placement is otherwise arbitrary.

Features

• Disk usage visualisation by way of tree maps
• Configurable display of views:
  • Choice of color mapping schemes. Color files by their:
    • name,
    • extension,
    • file type,
    • parent folder,
    • top folder,
    • level in the folder hierarchy,
    • creation time,
    • modification time, or
    • last access time
  • Choice of color palettes
  • Configurable mapping by file type
  • Optionally view package contents
  • Optionally view the entire volume
• Convenient navigation of views:
  • Traverse up and down the folder hierarchy
  • Select files and folders in the view
• Open files with Finder
• Reveal files and folders in Finder
• Preview files and folders using Quick Look
• Delete files and folders from the view
• Search files by name
• Filter files and folders:
  • Construct advanced filter tests based an item's name, path, size, file type, hard-link status, and package status
  • Use these filters to:
    • Mask files in the view
    • Filter files from the view
    • Exclude files and folders when scanning a disk
  • Filters and filter tests are automatically stored in the user preferences
• Multiple view support:
  • Re-scan a view to compare results before and after clean-up
  • Twin or duplicate a view for different displays of the same data
• Support for special files and folders:
  • Hard-links: Analyse Time Machine back-ups
  • Remote iCloud files: Analyse your cloud storage
• Save results of disk scanning operations:
  • Reload and view again at any time
• Export scan results:
  • As Image
  • As Text
• Configurable user preferences
• Snappy and responsive GUI:
  • Optimized drawing of views
  • Drawing and scanning are carried out in background threads
• Small memory and disk footprint
• Fully internationalized:
  • Up-to-date localizations available in English, Chinese, German, French, Italian, Turkish, Portuguese and Dutch
  • Outdated localizations available in Japanese and Spanish