I’ve been using Preview as an Image Editor for sometimes. Though I said “Image Editor”, my requirement is quite simple, which are: size adjustment (in term of resolution and size of the file) and color adjustment – and Preview provides these tools which I noticed by accident.
Under the Tools Menu you can find Adjust Size and Adjust Color tools which provide simple, yet powerful, image editing, even for a newbie.
Size adjustment is very handy. Preview already provides you several standard image size / resolution starting from 320 x 240 pixels. But if you need a certain resolution for specific requirement (or perhaps you’re looking for an optimum size reduction), Preview enable you to enter specific width, height, and resolution with options of scaling the image. Simple is the word.
Simplicity doesn’t mean weak. Powerful is another word for color adjustment on Preview. Let’s keep in mind that we’re not talking about “Powerful” as Photoshop. Under the Adjust Color tool Preview provides flexibility for exposure, brightness, and contrast adjustment. You can add effects to your image by using the saturation, temperature, tint, and sepia adjustment or you can just let Preview do the magic by using Auto Level of black and white composition.
Simple, yet Powerful!
But then I realized that Preview always quit unexpectedly every time I use the Adjust Color under Tools Menu. I figured out that these error/bug will be fixed sooner of later since I found the same experience from other users on the Internet.
Two days ago I found out, by accident (again), that this bug has been fixed. It seems that the bug is fixed along with an update of either other Application or the Leopard itself. I’m not aware whether or not Preview has been updated so I put the above image to let you know my current version of Preview.





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