Google Photos is a helpful tool from Google that allows users to view, edit and share photos stored on your system. Google Photos comes as a desktop tool as well as a website where you can upload and backup photos and videos. Here we will show you how easily you can migrate your Google Photos photos to your Flickr account.
Here is a small tutorial to show you how to upload photos from Google Photos to Flickr using PicbackMan:
Here’s the video tutorial you can refer to
PicBackMan is a free photo/video uploader that helps you to keep your memories backed up to your favorite online services.
Users in 130+ countries have backed up.
... an excellent job of uploading more then 300GB of photos to 2 different services