After uploading files to Firebase Storage, you can also delete them.
Delete a File
To delete a file, first
create a reference
to that file. Then call the delete() method on that reference, which returns
a Promise that resolves, or an error if the Promise rejects.
// Create a reference to the file to delete
var desertRef = storageRef.child('images/desert.jpg');
// Delete the file
desertRef.delete().then(function() {
// File deleted successfully
}).catch(function(error) {
// Uh-oh, an error occurred!
});
Handle Errors
There are a number of reasons why errors may occur on file deletes, including the file not existing, or the user not having permission to delete the desired file. More information on errors can be found in the Handle Errors section of the docs.

