There's a nice website, Base64 Encode Decode (https://www.base64decode.org/) . This site allows you to cipher things. For example, if I had the spoiler:
Darth Vader is Luke's brother's uncle's godfather.
I would put that into the site and get
RGFydGggVmFkZXIgaXMgTHVrZSdzIGJyb3RoZXIncyB1bmNsZSdzIGdvZGZhdGhlci4g
I'm assuming that no person reads Base64, so unless someone wants to read the spoiler, they won't get the show ruined.
Also, remember to put where the spoiler is from. For example, if I read the Bible and got to the seventh day and I was very excited, I would say.
Bible:Genesis Day 7 Spoiler-R29kIHJlc3RzLg==
Safe surfing!
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