JSON Validator
Check whether JSON is valid and see parse errors.
Runs in your browser · no upload
JSON validator
Paste JSON and check whether it parses correctly.
Questions
Does this JSON validator upload my data?
No. Validation runs directly in your browser.
Does it format JSON too?
This page validates JSON. Use JSON Formatter when you also want pretty formatting.
What does invalid JSON mean?
It means the text cannot be parsed as JSON, often because of missing quotes, commas, braces, or brackets.