DuckDuckGo Zero-click Info includes topic summaries, categories, disambiguation, official sites, !bang redirects, definitions and more. You can use this API for many things, e.g. define people, places, things, words and concepts; provides direct links to other services (via !bang syntax); list related topics; and gives official sites when available.
Screenshotlayer is a lighweight REST API built to deliver high quality PNG, JPEG & GIF website screenshots at unparalleled speeds and through a simple interface. Its architecture is focused on ease of use and integration, making for a high level of compatibility with any application, framework and programming language.