How Does Google Image Search Engine Work. You want the answer not billions of webpages so Googles ranking systems use a search algorithm to give you useful and relevant Google search results in a fraction of a second. In 2011 reverse image search functionality was added.
Google uses automated programs called spiders or crawlers just like most search engines to help generate its search results. 1 Indexing the text surrounding any image and matching it with the given query. Google uses software known as Web Crawlers to discover publicly available webpages.
Also like other search engines Google has a large index of keywords and where those words can be found.
Crawlers look at webpages and follow links on those pages and go from link to link and bring data about those webpages back to Googles servers. For example lets say you type in the word engineer salaries. This information is stored in the Google index a huge database that is stored on many. Prior to this addition to Googles repertoire Google.