DEVELOPMENT & DATA
Check the structure of your JSON and locate syntax errors with diagnostics inside the editor. The content never leaves your browser.
JSON EDITOR
Local diagnostics · exact position · your code is never sent
Paste the JSON into the editor. If the structure is wrong, the editor keeps your content, underlines it and points to the line and column you need to review.
Validate API payloads, configurations, fixtures, deployment files and exported data before adding them to a project.
FREQUENTLY ASKED QUESTIONS
Trailing commas, unclosed braces or brackets, unquoted keys and malformed values, with the location of the problem.
No. It only validates and highlights; it never rewrites your content automatically.