skjain-dev/Param_file_tool — reverse-engineered prompt

I want a simple browser based parameter file tool that someone can open and use right away. Make a clean single page where I can paste in a parameter file or upload one, see the settings in an easy to read way, edit the values, and then download the updated file again.

Keep it friendly for non technical users, with clear labels, helpful error messages, and a tidy layout. It should handle a basic parameter file format like key and value pairs, preserve the original text as much as possible, and show a raw before and after view so it is easy to check what changed. Add a sample file, a reset option, and a small validation check for missing values or obvious formatting mistakes.

Please keep it lightweight and client side so it works just by opening the page in a browser. If the exact format is unclear, make sensible assumptions and keep the code easy to extend later. If you need ideas, look up current docs or examples online.