With other browsers, I’ve used plug-ins that format raw JSON data beautifully so it’s more readable. By default, it’s just plain text without line breaks, which makes it incredibly hard to read.
The best JSON formatter I’ve seen has a distinct color for data classes so you know what’s the key and what’s the data value, and, the indentation level tells you the data hierarchies.
I’m currently missing this feature for both, desktop and iOS (I’m not an Android user).
Perhaps there could be a button for easily toggling between the tidy vs. untouched version. In one plug-in that I saw, such button got always placed at the top in the page content, not in the browser frame where it might clutter it.