In addition to this question I'd like to start a new question specifically for the new OS X Yosemite.

As I'm always curious about the announced items, there are many times hidden gems or nice tricks in new OS X versions.

Please share your hidden tricks (one per answer)! Please do not add "default" tricks which are available in all previous versions.

closed as too broad by Daniel Oct 17 '14 at 10:33

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    How come the reference question achieves community wiki status & this one is put on hold? Very inconsistent. – Tetsujin Oct 17 '14 at 10:40
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    Yes, what's different between this one and the older question? – Rnhmjoj Oct 17 '14 at 11:59
  • @Rnhmjoj This one is less broad than the other one, as this is only Yosemite. So I don't know - just waiting for it to be reopened. – Rob Oct 17 '14 at 12:05
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    @Rob Sorry, I think I haven't been clear. I think there is no reason why this should be on hold while the other is ok. – Rnhmjoj Oct 17 '14 at 13:50
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    @mbc I mean I don't understand why it is "too broad". I think this kind of question are really useful. – Rnhmjoj Oct 17 '14 at 15:14

Using currency calculator directly in Spotlight by typing in a number and a currency. Spotlight is automatically showing the most used conversions.

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  • This also works for the conversion of units like meters, yards, kg and pounds. – Volsk Oct 17 '14 at 10:18
  • If the currency you're interested in is not listed you can for example type "4 eur in aud" to get Australian Dollars. – root Nov 5 '14 at 11:55

Sign a PDF document with your Trackpad.

When you open up a PDF, you can click on the new Markup Icon, and then choose "Sign". You can choose between a file or create a new Signature. After you chose "New Signature", you can use your Trackpad to write your Signature.

enter image description here


Dark mode

Open system preferences, go to generals and tick use dark menu bar and dock

Now the dock, menu bar, spotlight and other UI elements are dark.

It's not a secret feature but not so easy to turn on.


Editing images directly in Mail

You don't have to edit images in Preview any more before you send them over to another person.

  1. Hover over the image which you included inside your E-Mail
  2. Klick on the arrow on the top right corner
  3. Click Markup

After that, you can use the same tools as in Preview:

enter image description here

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