I made salsa and after all done realized I did not sterilize the jars? Is this safe or how can I fix?
It's a gamble. I would reseal the jars. Just remove the lids, and do the full boil and seal process. Nothing is lost.
As mentioned in a similar post, you really need to do the full boil process to ensure all the contents, including the salsa, are safe for storage.
One reason for that is, if you even breathe on the jars, bacteria and microorganisms could have landed inside. The full boil will sterilize all of that.