Here is a non-developer tool. We had a similar requirement and I wanted to have a stab at creating a Chrome extension. It's free and there are no ads. Above all it is cross-platform and requires no technical knowledge to install and run. https://chrome.google.com/webstore/detail/tidy-gherkin/nobemmencanophcnicjhfhnjiimegjeo
I know this is an old post, but I came across it when I was looking for a solution and I didn't think the answers fully addressed the OP's request for a non-dev tool (presumably aimed at a non-technical person).
It's a first attempt, so be kind! Hope someone finds it useful.