Simply drag the "Base64 To Bubble URL" element to the editor. Once you do that, you can implement the "Convert base64 to bubble url" action. The action requires 3 fields: 1. Base64 - The base64 content that will be converted to a url.
2. File extension - file extension of the base64 file e.g png, jpg, txt e.t.c (default is "png")
3. File name - The  name you want the file url to have e.g invoice , diary e.t.c (default is "sample")

The "Base64 To Bubble URL" element has two states:
1. Url - The generated Bubble Url
2. Conversion Failed: Returns "yes" if the conversion fails and "no" if it "doesn't"