Bip39 offline https://www.tumblr.com/generalllamacolor/787594721599078400/can-you-depend-on-online-bip39-generators-a 3a43fced052690635cc9fdce418514528b000dff3eaa5b986ea7be809062e775f2fe99c76733ff200b56fb70cac7c6ac7818b1e8139192a70fe274f5bf57fa46 Some wallets can import different seed phrases plus some only have 1 standard. Bear in mind that not each individual seed phrase is the same... https://cruxbookmarks.com/story20870323/bip39-j-90-4g-c-new-step-by-step-map-for-bip39-github-https-dzen-ru-bip39-phrase-com