Import JSON into Kraken or Metamask

I have an encrypted JSON file that I know the password to with a small amount of eth in it.

How can I open my wallet to send to an exchange such as kraken? Kraken doesn’t allow importing of json, and neither does Metamask (even though it says it does here https://support.metamask.io/managing-my-wallet/accounts-and-addresses/how-to-import-an-account/) so I presume I need to open using another wallet. But which ones can be trusted?