Google has just added a new feature called Search by Image. This new feature is located in Google Images section, and in order to use it, you just need to click the camera that is located in the input field on that page.

After that, you'll get the ability to upload an image from your hard drive or to input use an image URL to conduct a search. Additionally, you can drag and drop an image into the input field and use that same image to perform a search. This is especially useful if you want to search something, for example, a certain location, and you don't know anything about it, and the only information that you have is the picture of it.

This is a useful feature, and if you want to make the most of it, you can try it out on Google Images, or you can download Firefox or Chrome extension and use this feature at any time instantly.

[via Ubergizmo]