i would like to know if thats possible to export a list of url from your dropbox image folder
No, it isn't Im afraid.
Richard's correct, the Dropbox API doesn't currently offer bulk/batch operations like this, but I'll be sure to pass this along as a feature request.
That being the case, you'd need to call the relevant method/endpoint, e.g., /files/get_temporary_link or /files/get_thumbnail, once for each desired file.
