How to use hidden features and change hidden settings in OS X Yosemite with TinkerTool

BY Jason

Published 24 Nov 2014

TinkerTool is a Mac app that gives you access to a lot of hidden settings in OS X. In this post, we tell you how to customise and tweak OS X Yosemite with these hidden settings.

Install TinkerTool

The first step is to install TinkerTool. You can download it from this link, open the DMG file, and drag the app to the Applications folder. Now open the app. If you have GateKeeper enabled, you can right click and select open from the menu.


The Finder tab has several options to customise Finder, including disabling animations, adding a Quit menu, show hidden files, disable sound effects and more. Once you’ve set all the options, click on Relaunch Finder.

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You can toggle animations for the dock, tweak visual settings like transparency, stacked views etc., and choose from three different minimising effects.

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The General tab lets you tweak settings like rubber banding during scrolling, inertia, screenshot formats, window animations and more. It also lets you change the behavior of the power button.

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You can also tweak the behaviour of preinstalled apps like Terminal, Contacts, Disk Utility and more as well as system features like Spotlight, Mission Control and Quick Look.

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You can change the system font with TinkerTool, and customise the font size for text in window titles, labels, help tags and so on.

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There are a lot of other things you can customise as well, including Safari, iTunes, QuickTime and more. And the tool has a useful Reset feature, so that you can always revert back to the default settings, if you tinker around a bit too much.

Let us know what you think of TinkerTool in the comments below.