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CSV validator

Check structure (ragged rows, empty/duplicate headers) and optional per-column rules.

Result

Run the tool to see results here.

About CSV validator

CSV validator is a free online data tool. Check structure (ragged rows, empty/duplicate headers) and optional per-column rules.

Enter your input, adjust the options (data, delimiter and schema) and run it. The result appears right next to the form, is never stored, and you can copy or save it in one click. No account is needed.

How to use CSV validator

  1. Type or paste your input into the form.
  2. Choose the options you need: data, delimiter and schema.
  3. Press Run, or use Ctrl/⌘ + Enter.
  4. Copy or save the result from the panel on the right.

CSV validator FAQ

What does CSV validator do?

Check structure (ragged rows, empty/duplicate headers) and optional per-column rules.

Is CSV validator free to use?

Yes. CSV validator is free, with no sign-up or account required.

Is my data safe?

Results are never stored. See our privacy policy for details.

What options does CSV validator have?

You can set: Data, Delimiter and Schema.

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