ConvertUUID is a tool for converting Minecraft usernames to Mojang account UUIDs in bulk. It outputs in a standard Java .properties file format, where username=uuid.
- Grab the latest tested AccountsClient source code from my fork here.
- Build AccountsClient.
- Build ConvertUUID.
Use --help for general usage help.
Using the -I command-line option, ConvertUUID will accept an input file of usernames seperated by a new line (one username per line).