If you’re confused about the title, let me explain: Search by image or reverse image search means to use an image to search for similar images or same image of different sizes, on Google. Simple as that. Although it sounds simple to use an image to search, but behind the scenes, there are very complex algorithms working. You see, Google’s crawlers which rank webpages as well as images are far from being human. They don’t have the same sense as we do. We can see, differentiate between colors, size and what not.
Since Google crawlers do not possesses senses like us, so they can’t see images and/or perceive colors. But they, with the help of complex algorithms and coding, have been made to “see” images. So they know what images you want when you search Brad Pitt or Angelina Jolie. Sure enough, alt=”keyword” tag and many other on page SEO factors help Google understand what you mean, in computational terms. So that’s how Google Image Search works.
Here’s how to search by image:
- Go to Google Images
- Click camera icon located to right side of search box
- Here you have two options: to either upload the image or provide image URL (you can get any image’s URL on web by right-clicking image and selecting Copy image URL
- Got the image URL? Paste it & click Search by Image
- If you want to upload image, select Upload an image tab and upload it