Zovo Spreadsheet Checker

Use this when the user wants to check a spreadsheet for errors or validate data before importing or sending it: "check spreadsheet for errors", "data validation excel", "find duplicates in excel", "check this csv for errors", "find invalid dates", "are there bad emails in this list". Attach a CSV, TSV or .xlsx file or paste the table. With no rules it detects column types from the values and checks impossible, ambiguous and mixed-format dates, invalid emails and email typos, phone digit counts, duplicate IDs and duplicate rows, blank cells in mostly filled columns, text in number columns, numbers stored as text, mixed decimal marks, leading/trailing spaces, IDs that lost leading zeros or became 1.2E+15, formula errors and row totals that do not add up. Optional rules: required_columns, unique_columns, allowed_values, ranges, total_rules. Returns each issue with row, column and cell value, counts per check, a column health score, an Excel copy with problem cells highlighted plus an Issues sheet, and an issues CSV. Does not edit or clean the data, does not verify that mailboxes or phone lines exist, and does not compare two files (use a comparison tool for that).

Use this when the user wants to see what is in a spreadsheet before validating it, or asks which columns, types or values it has: "what columns are in this file", "profile this csv", "which column is the ID", "suggest validation rules". Attach a CSV, TSV or .xlsx file or paste the table. Returns each column's letter, name, detected type (date, email, phone, ID, ZIP, number, money, percent, text), filled and blank counts, unique values, examples, min/max for numbers, short value lists, and suggested rules to pass to check_spreadsheet. Does not report errors (use check_spreadsheet) and does not change the file.