Text message conversations may contain evidence of important memories, and if you’re like me, you probably want to download your iMessages, save your messages, print your messages, or do something, anything, to make those exchanges more secure and accessible. One useful trick to save those interactions is to use the Messages Mac application to download your message history as a PDF file. This will let you keep that conversation on your computer and share it as you like, whether it was a conversation with a friend who isn't around anymore, or with a landlord and you need a record. Read on to find out how to turn an Messages conversation into a document you can save on your computer, or print later.