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Guides for messy Macs, full drives, and too many files.

Find duplicates, clean up folders, make sense of old drives, and figure out what’s actually taking up space. We start with what macOS can already do for free, then show you where other tools can help.

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Latest Folders
5 min read

How to batch rename files on a Mac

Rename multiple files at once on a Mac with Finder's built-in batch rename, a Terminal loop you preview first, or an app that names files by what's in them.

Questions it answers

  • How do I rename multiple files at once on a Mac?
  • How do I batch rename files on a Mac with numbers?
  • Can I undo a batch rename on a Mac?

More guides

  • Duplicates

    dupeGuru for Mac: what it does well, and when to use something else

    dupeGuru is a free, open source duplicate file finder. See what it does on a Mac, what to check before installing it, and when a different tool fits better.

    5 min read , published
  • Storage

    How to free up disk space on a Mac

    Your Mac already shows what's filling it up. Learn what's safe to clear, what macOS clears on its own, and where forgotten copies are taking up space.

    7 min read , published
  • Old drives

    How to get data off an old hard drive with a Mac

    Connect an old hard drive to a Mac, copy the files off before anything else, and know when to stop. Adapters, drive formats and what to do if it won't show up.

    5 min read , published
  • Folders

    How to organize digital photos on a Mac

    Organize digital photos in the right order: gather them, remove duplicates, cut the misses, then give the rest a structure, in the Photos app or in folders.

    6 min read , published
  • Folders

    How to organize files on a Mac

    Organize files on a Mac with a folder structure that survives a busy week, file names you can search, and built-in tools that sort for you.

    6 min read , published
  • Storage

    How to store photos on an external hard drive with a Mac

    Two ways to store photos on an external hard drive with a Mac: move the whole Photos library, or keep photos as folders. Plus the backup rule that matters.

    6 min read , published
  • Duplicates

    How to find and delete duplicate photos on a Mac

    The Photos app clears the duplicate photos in its own library. The copies in your camera roll, your downloads folder and an external drive need another fix.

    7 min read , published