Power Preview!
In the last article, I outlined how you could use the program Preview (which is always found in your Applications folder (shortcut:
cmd + shift + a) to do simple editing to your photos. Now is time to turn it up a notch.
Colour Correction
Imagine somebody sends you a picture of a loved one, but it turns out that it’s a very dark picture. You open it up in Preview and can only look at it, wishing you could do something about it. Well you can.

Open your picture in Preview. Now go to Tools and choose Adjust Color. A small floating window will pop up, allowing you to now correct all the different elements of your photo. At first glance it can seem quite complicated. But don’t worry. You’ll see a “Reset All” button at the bottom. Click this at any time to get back to your original photo. A quick tip: Use your Exposure slider to correct dark pictures, and then use the contrast slider to put the finishing touch, but only slide this a small amount.
Converting
When somebody sends you a file, every so often you need to change it’s format. For example, you might get sent a poster by email. When you open it up it looks fine. But when you print it, it might get enlarged, or not look so great. It’s time to convert. Preview makes a great File converter. By far, the most often used conversion is saving things as PDF files. This is as simple as opening up your file, and choose Save As.

If you click on the Format button, you get a list of all the formats that Preview will save in. Your most common format will be PDF, and JPEG (this is the same format as your Digital Camera photos).
Print One Page
This is also a very often used feature on my computer. And incredibly useful as well! Let’s say you get sent a PDF file, a report or something similar. You need to send just the first page (the introduction let’s say) or the last page (the summary) to somebody, but you don’t really need to be sending the 240 page report. Open the PDF, and choose File and then Print. Now instead of pressing print, choose which page you want to print in the pages from and to choices. Next, go down the the bottom right to the PDF button, and choose “Save as PDF”. This is similar to our
Print as PDF article, but with a twist of coolness.