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CSV Validator

Validate CSV files for structural issues, delimiter problems, and inconsistent row lengths before importing them into databases or analytics pipelines.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

CSV samples

Loaded sample: Default sample

CSV data

Supports header rows, quoted values, and multi-line fields.

Delimiter

Use first row as headers

Add secondary CSV

Jump to helper sections

What does this CSV validator check?

The validator ensures each row has the same number of columns, flags delimiter issues, and surfaces parse errors such as unmatched quotes or malformed rows.

Can I validate TSV or pipe-delimited files?

Yes. Use the delimiter selector above the input to switch between comma, semicolon, tab, or pipe separated values before running validation.

Is my data uploaded anywhere?

No. All validation happens entirely in your browser using WebAssembly-powered parsing, so your data never leaves your device.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.