If your image is simple, you can just use the magic wand. If it has a complex background and you are hoping to cut out a particular element of the image, you'll want to use the Lasso tool. With this tool, you'll be tracing around the object you want to cut out manually. A great example of this type of use is cutting out a person completely from an image and pasting their likeness into an entirely different image. This is very doable, but it requires some skill and effort. You're going to need to take your time the first few times you tackle this process, but once you get the hang of it, it should become second nature.
Two lasso tool options
The *freehand* lasso tool can be used to draw around an area with your mouse. It can be difficult to do this with precision using a mouse. It's much easier to do if you're using a pen-and-tablet device (although of course most people do not use those). You may instead want to use the *polygonal* lasso tool. With the polygonal tool, click and click again and keep laying down straight lines, with Pixlr connecting your points along the way. In this way, you'll be able to have finer control over what you're cutting out. Your ultimate goal is to draw a point-by-point area that closes in on itself at the end — you end up where you started and have your area selected.
Step 1: Select the Lasso Tool From the Toolbar and Create a Path
Make a mistake? You can add to your path by holding down the Shift key. You'll see a small plus sign near your cursor, which means you can add to the selection with a few clicks. At this point, you can even switch to the freehand tool to carefully add to your selection. Place your pointer somewhere inside your selection and draw outside of the selection to choose the areas you want to add, ending your dragging back inside your selection at your starting point. You'll see that your selection has expanded to include the area you drew. This is great for capturing detail that may have been hard to capture with your first pass. You may even want to zoom in to do this kind of detail work.
Similarly, you can remove part of your path by holding down the Alt or Option key. You'll see a minus sign, and you can remove areas in much the same way by drawing inside and outside of the selection area. Again, I recommend using the freehand tool to do this kind of work. And again, draw your path and end up where you started, and you'll see that area has now been removed from the selection area.
Step 2: Finish Your Path at Your Destination to Create an Active Selection
I've included an image of her pasted it into a new document to show you what that looks like.
Step 3: An Example to Get You Started + a Few Tips
I bumped up the contrast of her layer and used the burn tool to add a little bit of shadow in there after pasting her in. I could do more to clean this up and make it look a little more professional, but it's fine for my purposes. You may want to more clean-up with your projects, but as always it depends on your goals and level of skill with some of the more advanced tools.
A few extra tips
- Feathering: If you want the "cuts" you're making to have a very hard outline, turn feathering off completely. If you want a soft, gradual edge, increase the feathering amount. The more you increase the feathering, the more blurred your edges will be. If you're using very high feathering, your cut-out may take on a "halo" like appearance.
- Anti-alias: Choosing the anti-alias option will smooth the jagged edges of your cut-out. Think of anti-aliasing as a piece of fine sandpaper that smooths out the pixels where you're cutting.
- Invert selection: If you've drawn a path around your object but want to delete everything outside of your closed path, use the "invert selection" command in the Edit menu to choose the area outside.
- Check your contrast: Once the image you've cut out has no background around it, it can sometimes look less vibrant. Try increasing the contrast and see how it looks.