How to use JSON Formatter Online
- 1. Paste JSON. Or load a public URL, open a file, or follow a share link with hash data.
- 2. Format or validate. Pretty print, minify, or read line/column errors when syntax fails.
- 3. Convert further. Jump to JSON → YAML, XML, CSV, or TypeScript from the links below the editor.
About this tool
“JSON formatter online” is the head term for this category. This landing page uses that phrase in the title while pointing at the same private, client-side engine as the hub JSON Formatter tool.
Why client-side matters
Server-side formatters can log pasted tokens even when they claim not to. PureDevKit never receives your document — formatting uses the browser’s built-in JSON engine.
More than formatting
Tree view, repair, URL load, share links, and one-click jumps to converters cover the workflow around formatting, not just whitespace.
Code examples
JavaScript
const payload = JSON.parse(raw);
console.log(JSON.stringify(payload, null, 2));Python
import json
print(json.dumps(json.loads(raw), indent=2, sort_keys=True))Go
var buf bytes.Buffer
if err := json.Indent(&buf, []byte(raw), "", " "); err != nil {
log.Fatal(err)
}