Macs don't have a PrintScreen button, and if we want to take a screen-capture, the default program we use is Grab. Grab is great in a few ways; you can choose to use a timer before a screen-capture is taken and it can be used to ensure only a certain area of the screen is captured. Unfortunately, after a screen capture has been taken, Grab lacks any features to edit it (eg cropping) and only lets you save it as a TIFF.
It can be somewhat cumbersome to capture a screenshot in Grab, and then have to move it into a program like Photoshop to manipulate it. And if you want to share the image, you have to change its format.
An alternative piece of software is Skitch, screen-capturing software for OS X (Update: now also available for Windows, as well as mobile Android and iOS devices). Skitch provides screen-capturing facilities similar to Grub, but integrates some editing tools and also provides tools to share the images.
Skitch allows users to draw on screenshots and annotate them, through placing arrows and text. One can also make images have a transparent background, crop images, add a drop shadow to them or rotate them.
One of the cooler features is the 'drag' feature. When a screenshot has been captured and edited, if you click 'drag me', you can drag the image to a folder, an email or to open in another program.
Skitch can export images as JPEGs, PNGs, PDFs, SVGs, TIFFs, GIFs and JPGs. It can also upload images to Flickr, FTP servers, WebDAV folders and skitch.com, their own image hosting service.
The software boasts many features and I find it much better to use than Grab, as there's no need to have to use other pieces of software.
Update 2: Skitch has been acquired by Evernote. You can still download a standalone version of the application and use it though, so nothing changed in this regard. You can however integrate it with your Evernote account so that you can save the shots directly to your storage there.
After you start Skitch for the first time, the program's functionality becomes available right away. You can create full screen screenshots if you like, or create a screenshot of part of the desktop only by drawing a rectangle around the area after you invoke the feature.
All in all it is a pretty solid program, albeit quite large on Windows with its 33 Megabytes. Still works fine and if you need to take screenshot and use some editing afterwards then this is a program you may want to consider for that.
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Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.