If you are anything like us, you may find it a bit frustrating having to constantly change the size of the columns in Finder in OS X on your Mac. You would think that Apple would have built in automatic sizing or resizing based on the length of the file names in the directory, but no. So here is how to resize to make the default column size (width) for your Finder wider (or, for that matter, narrower).
First, the problem: the default width of a directory column in Finder is too narrow, so that it does not display the full name of the files.
Default Finder Column Width Too Narrow
Here’s how to change it so that your default column width is wider.
With your Finder window open, press the “option” key on your keyboard:
Now, while holding down the “option” key, click and drag the column separator:
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You do this by clicking on the double hatch mark at the bottom of the column separator:
You will see that when you hover over the double-hatch on the column separator, you will get the resizing symbol:
Simply drag the column separator to whatever width you want, while holding down the option key; when you release the keys, the default column width will be set at wherever you have put it.
Ahhh, that’s better!