Use Quick Look to Preview Files and Folders in the Finder, Spotlight, and Open Dialogs

ByEmily Dolloff

Finder icons sometimes hint at their file’s contents, but if you find yourself opening file after file to look at the contents quickly, the Mac has a little-known feature just for you: Quick Look. To give it a spin, select a file in the Finder and press the Space bar or Command-Y. If Quick Look supports that type of file, it instantly displays a standalone window showing the contents of the file without opening it in its native app. Press the Space bar again to close the window.

If the document you’re previewing has multiple pages, you’ll see thumbnails along the right side that you can scroll through using your mouse or trackpad, or by pressing the Page Up/Page Down keys. But you aren’t limited to just viewing a file: click the Open With button to open the file in its default app, or click the Share button in the upper right to send it to someone else via email, Messages, or another sharing service. PDFs and images will also show the Markup button that lets you annotate the file directly, and images have a Rotate button.

If you need to scan through a set of files in a folder, you can press the arrow keys while the Quick Look window remains open—how you move among the files depends on the Finder window’s view. In List view, for instance, using the Up and Down arrow keys can be a great way to browse through a collection of pictures. You can even interact with the Finder while using Quick Look, which means you can delete an unwanted photo by pressing Command-Delete while previewing it.

Quick Look works well for evaluating or comparing multiple files. Select a bunch of files and press the Space bar to open them all in Quick Look. The Left and Right arrow keys let you cycle through your selection; there are also Back and Forward arrow buttons at the top left of the Quick Look window. To the right, you’ll see a Thumbnail button that displays the selected files in a grid—click any thumbnail to focus on just that item.

To remove the distraction of your desktop, click the Zoom button in a Quick Look window. If you have multiple files selected, you can even start a simple slideshow from the zoomed Quick Look window—it’s a quick way to show off a folder of images. Another way to get to a zoomed Quick Look window is to select the files in the Finder and press Option-Space.

What file types does Quick Look work with? Not everything, but out of the box, Quick Look supports text files, RTF files, HTML files, images, audio, video, PDFs, iWork documents (Keynote, Numbers, and Pages), Microsoft Office files, fonts, and more. Third-party apps can extend Quick Look to support proprietary formats, and developers have released independent Quick Look extensions. Many people appreciate these three extensions:

  • Folder Preview (free) displays the contents of folders in Quick Look.
  • BetterZip (free for viewing) lets you look inside Zip archives and other compressed files.
  • Peek ($7.99) not only supports 530 file types but also lets you copy, search, navigate, and more directly within the Quick Look window.

Although it’s best known in the Finder, Quick Look is available elsewhere on the Mac, including the examples below, so it’s always worth selecting what you want to preview and pressing the Space bar to see if it works.

  • Spotlight: Preview search results to see if they’re what you want
  • Open dialogs: Preview files before you open them
  • Time Machine: Preview versions of files before restoring them
  • File transfer apps: Preview files on remote servers before downloading
  • Messages: Preview files added to conversations before opening them
  • Mail: Preview attachments to email messages

To manage your Quick Look extensions, open System Settings > General > Login Items & Extensions, scroll to the bottom, and click the ⓘ button next to Quick Look.

Finally, note that if your Mac has a trackpad, you can invoke Quick Look by force-touching a Finder icon (press deeply until you feel a click) instead of pressing the Space bar.

Quick Look takes just moments to learn, but it can save you hours of time poring through files on your Mac!

(Featured image by iStock.com/megaflopp)

Social Media: With a press of your Mac’s Space bar, you can use Quick Look to preview the contents of nearly any selected file, saving you time looking for the right file, comparing files, evaluating photos, and more. Try it in apps other than the Finder, too!

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  • Expand your mind…er..text

    Speed Up Your Fingers with Text Expansion

    With all the advances in computing and communications, it’s amazing that–after nearly 150 years!–we still use the keyboard layout from the world’s first practical typewriter for entering text into our Macs, iPhones, and iPads. Sure there are some improving dictation solutions out there but typing is by far how we input text. But we have not gotten that much better as typists, nor do we enjoy typing more–if anything, we increasingly abbreviate to avoid typing, hence “LOL, BRB, etc.” Text messaging aside, wouldn’t it be nice to be able to type less without compromising meaning or making your text look like it was composed by a trained monkey? Thanks to text expansion features built into OS X and iOS, and extended with third-party utilities, you can.

    For basic text expansion capabilities in OS X, look in System Preferences > Keyboard > Text, and in iOS 9, go to Settings > General > Keyboard > Text Replacement. For both, you can enter a phrase, and a shortcut that expands into that phrase when typed and followed by a space or punctuation character. (Tip: If text expansion doesn’t work in a Mac app like Mail or Safari, make sure Edit > Substitutions > Text Replacement is selected.)

    If you’re signed into the same iCloud account on both your Mac and your iPhone, for instance, the text expansions sync between them automatically. So, you can type “smh” and tap the Space bar to get “Shaking my head!” typed out for you, regardless of what device you’re using. (Another tip: don’t create abbreviations that you will also want to type normally. It might seem like a good idea to use “np” for “No Problem,” but that will get in the way of talking about Nurse Practitioners.)

    With such a useful feature built into OS X and iOS, why would you want to spend money on a third-party utility, like “**TextExpander**”:https://smilesoftware.com/textexpander (Mac and iOS), “**Typinator**”:http://www.ergonis.com/products/typinator/ (Mac), or “**TypeIt4Me**”:http://www.ettoresoftware.com/products/typeit4me/. Unfortunately, OS X’s text expansion feature doesn’t work in all apps (it likely won’t work if the app lacks the Edit > Substitutions > Text Replacement menu command). The interface for creating new substitutions is cramped and hard to work with, you can’t configure the trigger characters that cause abbreviations to expand, and you can’t include text with styles, variable text like the date, or even graphics.

    That’s where text expansion utilities shine. They can include styled text and graphics in expansions, insert the current date and time, respect case when expanding abbreviations, include the contents of the clipboard in expanded text, automatically fix common typos, create fill-in-the-blanks snippets that you customize on each expansion, and much more.

    Here are some ideas for the kinds of things you might want to turn over to your computer for typing:
    Long or complex words or phrases, such as scientific names. Aedes aegypti, anyone?

    *Your address, phone number, and email address. One of my favorites is “@d” which inserts my email address. I get real tired of typing email address, phone numbers, etc. Text expansion speeds that up!

    *Boilerplate text for common email replies.

    *The current date and/or time.

    *Special characters, so blb could expand to the British pound symbol £.

    *Unix commands for Terminal, such as using ssh to log in to a remote computer.

    I am sure you can come up with dozens that might work for you and speed up your typing. So think about what bit of text you might want expand automatically and give text expansion a try today!