Paste JSON and every problem is highlighted, explained in plain English and fixable in one click: missing brackets, stray commas, bad quotes, comments, and an error at character 1234 from another parser.
Our own hand-written parser, no JSON libraries. It finds every error in one pass.
Missing commas, trailing commas, single or smart quotes, comments, bad escapes and leading zeros, each with a why and a fix.
Unclosed and mismatched brackets, where each one opened, and where the missing one most likely belongs.
Paste an error from JavaScript, Perl, Python, PHP or jq and jump straight to that exact character.
Click any value to get its path in Perl, JavaScript, Python, PHP, jq or JSONPath, with a step-by-step breakdown.
Pretty-print, minify and sort keys. Convert to and from Perl, CSV, YAML and Python, and diff two documents.
Add keys and values with type pickers in a builder that stays in sync with the text.