I got tired of manually converting LTSpice schematics to QSPICE. It’s using Bordonynov’s symbol and model libraries to make a best-effort mapping of the LTSpice components. Another nice feature is that no files are ever written to disk, so your secrets are safe.
Unless you explicitly upload the schematic as part of a bug report, that is.
Here it is: https://lt2q.com
I’m sure there are bugs, especially in the symbol conversion. There’s a bug report form you can use. If you use the schematic upload option I can have closer look. Or just post feedback on this thread.
I hope you find it useful!