CSV/TSV validation
Parse CSV or TSV locally, check quotes, column widths, duplicate headers, and formula injection risks, then export safely.
How to use CSV/TSV for validation
CSV/TSV validation processes input only in the current browser; it does not upload, access the internet, or save user data.
Input content
Paste or load CSV/TSV, then choose comma- or tab-delimited.
Select a processing method
Checks quotation marks, line breaks, column-count consistency, duplicate headers, and dangerous formula prefixes.
Check and export
View row and column errors and warnings, choose whether to add a security prefix to formula fields, then export.
Limitations and Notes
- No type inference or silent data conversion is performed; processing is rejected when row, column, or field limits are exceeded.
- The exported security prefix may change how downstream software displays the content. Confirm the target system’s requirements before use.
- The tool only provides locally processed results; important configurations, secrets, documents, and published content must still be reviewed in the target environment.
FAQ
Will the input be uploaded to a server?
No. The page only uses browser memory, the local file API, and local resources already provided with the site.
Why are fields beginning with = flagged as risky?
Some spreadsheet software may execute these fields as formulas; the tool displays the risk and provides a safe export option.
Why do the results still require manual review?
Edge-case syntax, regional standards, third-party readers, and target runtime environments may differ; the tool does not replace final validation.