JSON Formatter

Validate, pretty-print or minify JSON, with the line and column of any error. Runs in your browser.

Paste JSON from an API response, a log line or a config file to check that it's valid and make it readable, or minify it to one line for a request body or an environment variable. Errors show the exact line and column. Comments and trailing commas (common in hand-edited files) are accepted and removed, and sorting keys makes two versions easy to compare in the Text Diff.