Zilla is a free photo/video backup assistant that helps you to keep your memories backed up to your Flickr account.
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Adding tags to Flickr images makes it easier for people to search for a specific picture. Once you finish uploading an image to Flickr, then Flickr will ask you if you want to add a description. Change the title of the image to what you like, add a description, and tags. Separate each tag with a comma. Note that you can add up to 75 tags per photo and if you have over 75 tags and wish to add more, you'll need to delete & replace some with previous tag names.
If you want to remove tags from an existing image, follow the process below: