Check
Find and list problem cells before you submit or import a table. You can also download the table with the problems marked.
- Hidden characters
Free tool that lists Excel and CSV cells with non-breaking spaces, zero-width characters, line breaks and stray spaces that TRIM can't remove. Files are not uploaded.
- Spelling variants
Free tool that finds values in a column that differ only by case, width or spacing, and gives you the table with each written the same way.
- Character count
Free tool that counts characters or bytes in every Excel or CSV cell, shows the longest value per column and lists cells over a limit.
- Missing numbers
Free tool that finds missing, repeated and out-of-order numbers in an Excel or CSV column, including numbers with a prefix like INV-0001.
- Validate data
Free online CSV and Excel validator: set rules per column and list every cell that is blank, the wrong type, too long or not allowed. Nothing is uploaded.
- Check digits
Free check digit calculator for a whole column: validates EAN, UPC, ISBN and IBAN numbers from Excel or CSV and lists the invalid ones.
- Find personal data
Free tool that finds cells with email addresses, phone numbers, card numbers and national IDs in Excel or CSV before you share it.
- Column profile
Free tool that summarizes every column of an Excel or CSV file: value types, blanks, distinct values, min, max and the most common values.