I hacked up a version of it that removes the checksum validation (Electrum uses a different system to BIP39 and I couldn't be bothered implementing it, so I just removed it
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)
Electrum appears to use a "BIP32 Derivation path" of m/0 for receive addresses and m/1 for change addresses...
Also, because of the tremendous amount of JavaScript contained within the page... it is something like 2.5megs! And runs a bit slow on my old Galaxy S5, but it works
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
I've put up a copy here: https://github.com/HardCorePawn/electrumBIP39
It's very rough, the links probably won't work, and half of it still references the iancoleman page, but I've put a test Electrum seed into it, and it generates the same receive and change addresses as the actual Electrum wallet.