A Good JSON Viewer Saves Hours of API Debugging

Raw JSON from an API response is nearly unreadable. A 500-line JSON object on a single line, with no indentation and no syntax highlighting, is hostile to human eyes. You need to find one field in a response that might contain dozens of nested objects and arrays. Without a proper viewer, this means copying the JSON, pasting it into a formatter, visually scanning the formatted output, and repeating the process every time the response changes. A JSON viewer that parses, formats, syntax-highlights, and lets you collapse and expand sections transforms API debugging from an exercise in frustration to something manageable. What a good JSON viewer does Formatting. Takes minified JSON and adds proper indentation. This is the minimum bar -- most tools do this. Syntax highlighting. Colors strings differently from numbers, booleans, nulls, and keys. Makes the structure scannable at a glance. Collapsible sections. In a large JSON response, you want to collapse the sections you do not care about an