From my understanding pubkeys have 2 formats:
format1: npub1xchtl75ftt9s4f8v9ugetxcuyvawcgn47cdnhmhpnvdkujfwyuvs34sudw (63 characters aka Bech32)
format2: 362ebffa895acb0aa4ec2f11959b1c233aec2275f61b3beee19b1b6e492e2719 (64 characters aka Hex-Encoded)

If I had any programming skills, I would try to use https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki
to convert the hex-encoded public key into a word list, but that is as far as I can go ...