CSV Validator & Viewer
Paste or upload CSV data to validate structure, detect delimiter issues, and preview in a formatted table. Analyze column counts and data consistency. All processing happens in your browser.
What is CSV?
CSV (Comma-Separated Values) is a plain text format for storing tabular data. Each line represents a row, and values within a row are separated by commas (or other delimiters like tabs or semicolons). CSV is widely used for data exchange between spreadsheets, databases, and applications.
Learn more about CSV format →Common CSV Issues
- • Inconsistent column counts across rows
- • Unescaped commas within quoted fields
- • Missing closing quotes on fields
- • Mixed line endings (CRLF vs LF)
- • BOM (Byte Order Mark) at start of file
- • Empty rows or trailing delimiters