First Contentful Paint

As the browser requests and receives the files needed for the webpage, it processes these files to extract the information it needs to begin building the webpage. The process of the browser building the webpage is known as rendering. During rendering, the browser converts all the files it has received and all the code it has processed into a functioning webpage. The last step of the rendering process is painting, or displaying, the webpage element by element. When the browser starts painting elements, visitors finally begin to see something on the website and are no longer looking at a blank screen.