Converting base 64 back to a file

I received my attachments via API in Base 64. Any idea how I can preview this file inside my app? I would like to convert email attachments from Base 64 to images, PDF files, text files etc.

This will only handle one file at a time, so create a recursive workflow (Search the forum here for tutorials) and have it loop through each attachment from Postmark, uploading and saving to your database.

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