Not entirely. It depends on the type of image, how clear it is, and how much unique detail there is. The more unique the image, the more chance Google will find the exact one. But if it is a picture of a person with many things going on in the background, you may end up with hundreds of thousands of unrelated images that look vaguely similar.

There are many, although the results will vary. TinEye is probably the most well-known Google alternative, but a quick Google search will throw up dozens more.

Yes and no — there is a subtle difference. Google Lens will identify objects, read text, scan barcodes, and more if you photograph that object. You’ll then get search results based on what it thinks it is. But it also finds visually similar images and has some of the reverse image search features.