You can generate website thumbnails using Sitethumbshot. This tool is incredibly easy to use and does not require a lot of technical expertise. Sitethumbshot provides API which is easy to use. Using this API you can request new webpages for thumbnail generation, send refresh for existing webpages. You can insert screenshots in blogs, directories or forums. API is specifically design to be easy. This tool is easy to integrate into blogs, forum, directories or any other webpage. To start with you just need to open account and start submitting webpages. In terms of price, sitethumbshot is least costly and the most reliable tool available on the web.