JSON Formatter / Validator

Format, minify, and validate JSON locally with a split view: original on the left, result on the right.

Beautify, minify, and validate JSON locally — original on the left, result on the right.

Indent spaces Sort object keys

Original Formatted output

Tab inserts indent spaces in the original pane (does not leave the editor). Processing stays in your browser.

Why Format JSON?

API payloads and log lines are often minified. Pretty-printing makes structure obvious; validation catches trailing commas and quote issues before they hit production.

Tips

Tab inserts indent spaces in the original pane (Shift+Tab unindents).
Use Validate when you only need a pass/fail with line/column.
Use Minify for compact transport or storage.
Sorting keys helps when comparing two documents visually (or use the JSON Comparer).