Google's popular image software Picasa has an open API that allows users to add their own buttons to the Picasa interface, according to Google Code blog.
These buttons can send files to other applications in your computer, and this sample file shows you how to send files to Adobe Photoshop CS3, but you can also choose to upload photos or videos to a website.
Also here is the Google Web Uploader API, which uses a few years ago to publish to the blogger image of the agreement, will be uploaded between the image of the preview, the use of the Web Uploader API, users can make the interface more like sending e-mail, For example, "Upload, please wait ...", Picasa can also adjust the picture size between sending pictures, so as to save time, there are some PHP demo code for reference.
The user adds a custom button to display the effect as shown in the following illustration.
Because these buttons can be made by anyone, it also means that the size of the Picasa button is fixed, you can make a button for your personal blog or your picture storage space, similar to the Picasa integrated Flickr application.