Migration from SSRS 2012 to SSRS 2017

Our company is moving from SSRS 2012 to SSRS 2017. I would like to know if anyone has done a similar migration. If yes, could you please guide me through the steps? From what I read about the migration, it looks like its a very tiring process since I will have to download each report from 2012 server and upload it into 2017 server. or use PowerShell scripting to automate the same. If anyone knows a better way to do it, I am all ears. Thanks