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Free & Anonymous CSV Validation

Validate Your CSV Files Instantly

Upload any CSV file to check its structure, encoding, delimiters, data types, and quality. Get instant results with a shareable report.

  • Uploads discarded after processing
  • Instant results
  • 100% free
  • No signup needed

What We Check

What We Check

1

File Structure

Rows, columns, and format validation

2

Character Encoding

UTF-8, Latin-1, and BOM detection

3

Column Consistency

Ensures all rows have the same columns

4

Data Type Analysis

Detects integers, dates, emails, URLs

5

Duplicate Detection

Finds duplicate and empty rows

6

Quality Score

Overall quality rating from 0 to 100

Your Privacy Matters

Validation runs on our server. The platform may use temporary storage during upload; the uploaded file is discarded after processing, and shareable validation metadata expires after 24 hours.

Free Online Tool

All CSV Tools

Validate your CSV files instantly. Check encoding, delimiters, structure, data types, and get a quality score. No signup or registration required.

CSV Linter Upload a CSV file to check for syntax errors, inconsistent columns, encoding issues, and other data quality problems. CSV Delimiter Converter Convert CSV delimiters online between comma, semicolon, tab, and pipe. Upload files up to 10 MB, download the converted CSV, and skip signup. CSV to Excel Converter Upload a CSV file and download it as an Excel (.xlsx) spreadsheet. Preserves all your data, headers, and structure. CSV Remove Duplicates Upload a CSV file and automatically remove duplicate rows. Keep only unique data for cleaner datasets. CSV to JSON Converter Upload a CSV file and convert it to structured JSON. Uses headers as keys for clean, ready-to-use JSON output. JSON to CSV Converter Upload a JSON file and convert it to a clean CSV spreadsheet. Extracts keys as headers for structured data output.

How It Works

Three simple steps to validate your CSV file

1. Upload Your File

Drag and drop or click to select your CSV, TSV, or TXT file. Files up to 10MB are supported.

2. Automatic Validation

Our engine checks encoding, delimiters, structure, data types, duplicates, and more in seconds.

3. Get Your Report

View detailed results with a quality score, issues list, and column analysis. Share with a link.

Resources

How We Validate CSVs

How to Fix CSV Import Errors

Step-by-step guide to diagnosing and fixing the most common CSV import errors: encoding, delimiters, inconsistent columns, and special characters.

How to Change the CSV Delimiter

Learn how to change a CSV delimiter from semicolon to comma, or from comma to tab. Step-by-step guide using our free online delimiter converter.

How

Frequently Asked Questions

Common questions about CSV validation

CSV validation checks your file for common issues like inconsistent column counts, encoding problems, duplicate rows, and data type mismatches. It helps ensure your data is clean and ready for import or analysis.

The platform may use temporary storage while your CSV file is uploaded for server-side validation. The uploaded file is discarded after processing; only validation metadata is retained, and its share link expires after 24 hours.

We support CSV (comma-separated), TSV (tab-separated), and TXT files with common delimiters including commas, semicolons, tabs, and pipes. The delimiter is auto-detected.

We detect UTF-8 (with and without BOM), Latin-1 (ISO-8859-1), Windows-1252, and other common encodings. Files are automatically converted to UTF-8 for analysis.

Yes! We offer a REST API and MCP (Model Context Protocol) server for programmatic access. Check our API documentation for details on authentication and endpoints.

The quality score (0-100) is based on multiple factors including column consistency, header quality, duplicate percentage, empty row count, encoding, and data type uniformity. Each issue reduces the score based on severity.