Upload File Firebase Storage

Hello, I am trying to make like a social media App where you upload files to firebase storage and the newest upload is shown on the screen but i can’t figure out how to upload a png to firebase storage. I need to type in something with base64 but when i select it it says (Firebase Storage: String does not match format ‘base64’:Invalid character found (storage/invalid-format). Please Help

You are putting a file path instead of a file content.

the file path leads to a png on my computer

yes that is the point of a file path. that action asks for the content of the file, not a path to a file to get content from.

oh thanks but how do i get the png file from my desktop?