Check and validate inputs with clear, explainable rules.
Validation tools answer a single question cleanly: is this value structurally valid, and if not, why?
They are useful in forms, data cleanup, API debugging and QA.
Email Validator checks local-part and domain syntax without sending mail. URL Validator confirms scheme, host and path shape. JSON Validator reports the exact position of the first syntax error. Schema Validator checks JSON against a schema. Regex Tester shows live matches and groups for JavaScript regular expressions.
None of these prove that a mailbox exists or a URL is safe — they check structure. Pair them with confirmation flows or live checks when existence matters.
Validation runs in the browser so sample data and test credentials stay private.
2 tools