Validate and format JSON
Prettify JSON parses input, reports syntax errors, and formats valid JSON with readable indentation or minified output for API payloads and config files.
Tool workspace
Format, minify, validate, sort keys, copy, and download JSON in a clean browser-based editor.
Account required
OmniToolbox is free to use right now, but processing tools require an account so usage stays protected and abuse-resistant.
Prettify JSON parses input, reports syntax errors, and formats valid JSON with readable indentation or minified output for API payloads and config files.
Optional recursive key sorting makes JSON easier to compare, while copy and download actions help move the formatted output into code, docs, or debugging tools.