ChatGPT's translation features now have their own webpage at chatgpt.com/translate. The page is basic and it directs you to ChatGPT's main conversation tool once a translation is done.
You can use other file name or type, such as .json, .jl, .csv, etc. Use flag -s LOG_LEVEL=INFO to see logs in terminal for some log level. Also, you can use other log levels such as DEBUG, INFO, ...