On Desktop (ChromeOS, Windows, Mac, and Linux), there are multiple variants of the New Tab Page (NTP). The variant is selected according to the user’s Default Search Engine (DSE), profile, extensions and policies. This folder implements the backend of third-party instant NTPs for search engines such as Bing and Yandex. The full list is in [prepopulated_engines.json][engines], under the key "new_tab_url".
Instant NTPs are loaded at runtime from third-party servers and gain special privileges over regular web pages. For example, instant NTPs can embed up to 8 NTP Tiles. vie elements. Each NTP tile represents a site that Chrome believes the user is likely to want to visit. On Desktop, NTP tiles have a title, a large icon, and an “X” button so that the user can remove tiles that they don’t want.