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CSV Import Validator

Upload a CSV file, map columns to expected fields, validate types and formats, then export only the clean rows.

Upload CSV

How It Works

  1. Upload — Drop or select any CSV, TSV, or delimited text file. The delimiter is auto-detected from the first line.
  2. Map columns — Each detected column appears in the mapping table. Give it a field name and pick a validation type (text, number, integer, email, URL, date, boolean, phone, or a custom regex).
  3. Validate — Click Validate to check every cell against its rule. Errors are highlighted in red; passing cells stay neutral.
  4. Export — Download only the valid rows as a clean CSV, or download a full error report with an extra "errors" column describing each problem.
Supported Validation Types
  • Text — Any non-empty string (when required)
  • Number — Any finite decimal or integer
  • Integer — Whole numbers only
  • Email — Standard email address format
  • URL — http/https URL
  • Date — ISO 8601 or common date formats
  • Boolean — true/false, yes/no, 1/0
  • Phone — International or local phone number
  • Regex — Custom regular expression you supply
  • Skip — Column is ignored

Embed This Util

You can embed this util on your own site as a widget. Adding ?embed=1 to the URL loads a compact version with just the tool itself; no header, menu, or documentation. Paste this snippet into your HTML: 


    

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