So, today I've finished another part of my project...
this is a standalone BIP39 checksum finder.
part of the toolset.
(see the footer for the checksum tool, or directly at )
https://allesvoorbitcoin.be/bip39tool/checksum/
A few more tools are ready, or almost ready to be released.
If you want to support this work, please fund the geyserfund at https://geyser.fund/project/bip39tool2025