Bip39 Mnemonic Code Converter Tool. Due to the cryptographic structure of BIP-39, a weak passphrase isn't going to lessen the protection of the other wallets or enable expose the seed words. What constitutes a "fantastic wallet" is one that has very clear, easy to access documentation on supported BIP standards, https://wiishlist.com/story20229392/bip39-mnemonic-https-linktr-ee-bip39-helping-the-others-realize-the-advantages-of-bip39