Picasa is an image-organizing application, acquired 12 years ago by Google. And now Google has decided to end support for it and transition all its users to Google Photos.
Picasa as a standalone application for desktop provided many features like sharing photos, auto-tagging friends, cloud backup of all photos and sync across all the devices connected.
Anil Sabharwal, Google Photos chief said, “We believe we can create a much better experience by focusing on one service that provides more functionality and works across mobile and desktop, rather than divide our efforts across two different products. We apologize for any inconvenience this transition causes, but we want to assure you that we are doing this with the aim of providing the best photos experience possible.”
Picasa will still continue to work as a standalone application for desktop but there won’t be any more updates for it and all photos stored with Picasa Web will be moved to Google Photos on May 1, 2016.
And for developers, Google will also be retiring some of the Picasa API, like Flash support, Community search, Mutation operations other than uploads, All support for tags, comments, and contacts. Read more
Source: Google Photos Blog