Use the Thumbalizr API to submit URLs to automatically get a thumbnail image of that URL's web page contents. The thumbnails in JPG or PNG are sized according to the pixel size parameter (width) that you specify. You can also download a script to cache images locally with PHP. Also, specify the quality of the thumbnail to return, whether you want a screen or a page captured, and numerous other options. There are many options for API use: free option with no API key needed but limited features, free API key option for more features, API key paid for even more features, and API key paid with the most features.
The following is a list of libraries from ProgrammableWeb's Library Directory that matched your search term. Although there many different interpretations of the word "library" among software developers, ProgrammableWeb adheres to a specific definition so as to clearly distinguish libraries from SDKs and frameworks in a way that will facilitate clean search results. In ProgrammableWeb's parlance, the term "library" is strictly used to describe a platform-specific software tool that, when installed, results in the provisioning a specific API. Conversely, SDKs are exclusively for consuming APIs and Frameworks are agnostic to specific APIs. If you think a library, SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.