Bip39 Online. Whilst there are BIP39 wordlists in languages apart from English, it can be strongly not encouraged to implement non-English words for wallet backups. It'd make restoring the wallet complicated or unachievable. No, there isn't a technological limit towards the length of your respective passphrase. On the other hand, https://ilovebookmarking.com/story19019512/bip39-word-list-https-linktr-ee-bip39-the-basic-principles-of-bip39-mnemonic