⚡ Instant CSV cleaning

Fix CSV Files Online — Free CSV Repair Tool

Repair encoding errors, remove duplicates, fix delimiters. No signup. No data stored.

Repair messy CSV files without installing software. Detect encoding and delimiters, clean common data problems, and download a corrected file.

No signupStart immediately

Up to 50 MBPer file

No data storedPrivacy first

5 free repairsEvery 24 hours

5 of 5 free repairs remaining Rolling 24-hour allowance · Go unlimited for ~~$39~~ $9.99 (Ends July 31st)

Private and secure Instant results No data stored

Popular CSV tools

Purpose-built tools for viewing, cleaning, validating, converting, and repairing CSV files.

CSV Viewer

Open and inspect CSV files directly in your browser.

CSV Cleaner

Remove empty rows, normalize content, and clean common formatting problems.

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CSV Validator

Find malformed rows, inconsistent columns, encoding problems, and syntax errors.

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CSV to JSON

Convert CSV records into structured JSON for APIs and applications.

Shopify CSV Fixer

Prepare product CSV files for smoother Shopify imports.

Remove UTF-8 BOM

Remove hidden BOM bytes that can break imports and parsing.

How it works

Three steps from a broken CSV to a clean, usable file.

Upload

Select a CSV file from your device.

Auto-fix

CSVFixer analyzes encoding, delimiters, rows, headers, and common data problems.

Download

Review the result and download the corrected UTF-8 CSV.

What CSVFixer repairs

CSV files often look normal in a spreadsheet but fail when another system reads their underlying bytes, separators, or row structure. CSVFixer targets those hidden problems without asking you to install software or create an account.

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Encoding and strange characters

Excel and supplier exports may use Windows-1252, Latin-1, UTF-16, or a hidden byte-order mark. CSVFixer detects common encodings and writes clean UTF-8 so accented product names, symbols, and international text survive an import.

Repair CSV encoding

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Delimiter and row structure

A file can use commas, semicolons, tabs, or pipes while still being called a CSV. The repair engine checks the separator, normalizes line endings, and fixes common structural inconsistencies that shift values into the wrong columns.

Fix delimiter errors

Duplicates, blanks, and headers

Repeated exports and merged supplier feeds often introduce duplicate rows, empty records, whitespace, and repeated column names. Cleaning these issues produces a smaller, predictable file that is easier to validate and import.

Remove duplicate rows

Built for ecommerce imports and data operations

CSVFixer is useful when Shopify, WooCommerce, Amazon Seller Central, a CRM, or a database rejects a file that opens correctly in Excel. Start with the automatic repair tool, inspect the result, and download a normalized CSV. For platform-specific help, read the Shopify CSV import guide or the CSV encoding guide.

Uploads are processed in application memory rather than written to persistent file storage. You should still avoid uploading sensitive data that is not needed for the repair and review the privacy policy for details.

Frequently asked questions

Is CSVFixer free?

Free for occasional use — up to 5 repairs per day. Founder Pass removes the daily limit permanently.

Does CSVFixer store uploaded files?

CSVFixer processes uploads in application memory and does not write them to persistent file storage. Avoid uploading sensitive columns that are not needed for the repair.

Which CSV problems can it fix?

Common workflows include encoding repair, delimiter normalization, malformed-row detection, duplicate cleanup, header repair, and format conversion.

Can I use it for Shopify or WooCommerce?

CSVFixer includes dedicated workflows and guidance for common ecommerce import problems.