Free CSV Validator — Find Errors Before They Break Your Import

Upload your CSV and get a complete error report in seconds. Catch encoding problems, missing headers, malformed rows and structural issues before they cause import failures in Shopify, WooCommerce or your database.

Private & secure Supports up to 50MB Instant processing

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Encoding Correction

Auto-detects non-standard character sets and converts them to clean UTF-8 without changing your data.

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Structure Normalization

Repairs delimiters, line endings and malformed headers so every column imports predictably.

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Data-Safe Repair

Preserves your content while removing structural errors, empty rows and duplicate records.

How to use CSV Utility

Upload CSV

Select the CSV that is failing to import.

Auto-Repair

CSVFixer detects and repairs common format problems.

Download & Import

Download the clean file and import it immediately.

What gets repaired

What this CSV tool checks and repairs

CSV import failures usually come from a file's encoding or structure, not the visible values. This tool corrects those hidden issues while keeping your records intact.

check_circle Clean UTF-8 output without a BOM
check_circle Consistent comma-separated columns
check_circle Normalized headers and line endings

Frequently Asked Questions

What does a CSV validator check?expand_more

A CSV validator checks encoding, delimiter consistency, header completeness, row structure, empty rows, duplicate columns, unclosed quotes and BOM markers.

Why does my CSV fail to import even though it opens in Excel?expand_more

Excel is tolerant of CSV errors and auto-corrects many issues. Import tools like Shopify and WooCommerce are strict — they reject files that Excel would open fine.

Is this CSV validator free?expand_more

Yes. The Free tier includes five successful repairs per IP address in a rolling 24-hour window, with no account or credit card required. Files can be up to 50MB.

Can it validate CSVs for Shopify?expand_more

Yes. CSVFixer validates against the most common Shopify CSV requirements including UTF-8 encoding, required headers and delimiter format.

What is a BOM marker and why is it a problem?expand_more

A BOM (Byte Order Mark) is a hidden character Excel adds to CSV files. Most import tools treat it as part of the first column name, causing header validation failures.