CSV inspector
See where a spreadsheet’s rows disagree with each other before you rely on it. Your original data isn’t changed.
Your entries stay in this browser. We don’t receive them. Clear removes them from this page. There is no automatic save; downloads are created on your device.
Inspect a CSV
Up to 2 MB, 10,000 records, 150 columns. Comma-separated UTF-8 CSV with a header row. Other encodings and delimiters need conversion first.
Quoted commas and line breaks are supported. Checks look at the table’s structure; they can’t tell whether a value is true for your business.
Report & export ↓Issues to resolve
Load your CSV or the synthetic example to see a report.
Report format & export notes
Record 1 is the header. Source line counts physical lines, including quoted line breaks. The report lists issues and flagged cell values only; your original data is not included in full. Exported report cells are quoted; formula-like values receive a leading apostrophe for safer spreadsheet opening.