Unicode is a massive, sprawling effort that pairs a number to every unique character in a language, every punctuation mark, every math symbol, and much more. And nearly all of it is available within macOS—but not always easy to find.
There’s a semi-hidden way to access special symbol sets in Unicode, and a somewhat obscure method of searching for specific symbols across all of macOS’s included Unicode characters.
First, open the Keyboard preference pane and make sure that “Show keyboard and emoji viewers in menu bar” is checked. Now, in the menu bar, click the tiny palette that has a command (⌘) key in it and select Show Emoji & Symbols. The Character Viewer that appears shows emoji by default, and with an input cursor in any app or form field that lets you type in text, you can double click emoji to insert them or drag them into a document.
But that’s not the semi-hidden part. Click the gear icon in the upper left and choose Customize List and expand the Symbols section. You can now check boxes next to any commonly used Unicode sets you might want to use in documents or email. This can be handy for dingbats (typographic frills and pre-emoji symbols), universal signs (like for plastics and recycling), or currency symbols.
Now the obscure part is even better. You might notice a Search field in the upper-right corner of the Character Viewer. It’s not immediately obvious what you can search for. The viewer lets you match against characters you type, but also against any part of any name of a Unicode entity.
For instance, type “recycling” and you’ll see all the recycling symbols; type “heart,” and the viewer matches all the emoji hearts, dingbat hearts, and hearts in playing card symbols. (You can also find all variants of h, e, a, r, and t across the written form of different languages.)
This can be particularly useful if you’re trying to find something slightly obscure or elegant, like a ½ mark (search on “half”), and don’t want to scroll through the endless Unicode set.
Note: If you’re sending files or email to other people who aren’t using a Mac or iOS, some of the symbols may not appear depending on the configuration of their system: they need a font installed that includes the special characters, or they may see what user-interface and type people call “tofu:” an unfilled upright rectangle that indicates no character in the font is available to display the symbol.
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