JSON Formatter

No. Formatting runs locally. The text you paste is processed in your browser only. Quick Tools does not send JSON to a server, save it, or keep a copy after you close the tab.

It flags parse errors with line hints. Auto-repair is best-effort only. Beautify and Minify may strip a leading BOM and trailing commas, then format the result. They will not invent missing keys, close unmatched brackets, or rewrite invalid structure. Use Validate to see the original error without changing your paste.

This page formats JSON. It pretty-prints, minifies, and validates JSON text. It does not export CSV, Excel, YAML, or tables.

Beautify pretty-prints with 2-space indentation so nested objects and arrays are readable. Minify removes extra whitespace and produces a single-line string, which is useful for payloads and config that must stay compact. Both require JSON that parses, or a successful best-effort repair.

When JSON.parse fails, the engine usually reports a character position and sometimes a line and column. This tool maps that position onto your paste (1-based line and column) so you can find the unexpected token, trailing comma, or truncated value.

Strict JSON does not allow comments or trailing commas. Validate reports those as parse errors. Beautify and Minify may remove trailing commas as a convenience; comments are not stripped. The output is always standard JSON.