JSON Validator (with Line & Column Errors) — Free & Private
Validate JSON and get the exact line and column of any error, right in your browser. No upload, no signup. Free and unlimited.
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How to use JSON Validator
- 1Paste your JSON into the input box.
- 2If it is invalid, the exact line and column of the error is shown.
- 3Fix the highlighted issue and the validator updates live.
- 4A green check confirms valid JSON — no upload required.
JSON Validator FAQ
- Does it show where the error is?
- Yes — the validator reports the exact line and column of the problem so you can jump straight to it. All local, no upload.