- • Use pretty mode for reading and review.
- • Use compact mode before pasting into configs when space matters.
- • Validation errors point to the parser message directly.
How it works
Result / output
{
"hello": "world"
}How to format and validate JSON in the browser without breaking payloads
A practical guide to browser-side JSON formatting: when to prettify, when to minify, and how to use validation safely before pasting payloads into real systems.
How to turn repeated tasks into small tools
A practical way to notice repeated chores, define input and output, and decide when one small tool is enough.
Does it support comments?
No. It validates strict JSON only.
Will keys be reordered?
No. It preserves the order of keys from the parsed payload.