For Shopify agencies, freelancers, and migration teams

Turn “the client’s CSV is broken” into a five-minute diagnosis.

Use CommaFix before migrations, bulk product updates, or handoff. The file stays on your device, safe mechanical repairs are downloadable, and risky catalog decisions remain visible.

Test it with a file →
01Client-safe by design

The CSV is parsed inside the browser and is not uploaded to ThorntonAI.

02Useful before billable cleanup

Get exact rows, repairable mechanics, and issues that require human judgment.

03Easy to pass forward

Send clients the public checker so they can diagnose a rejected export before your team touches it.

A practical referral motion

Use the tool free. Share it when it saves a rescue call.

CommaFix is in founding beta. There is no contract, seat license, or forced signup. If it becomes part of your workflow, ThorntonAI wants the feedback—and a voluntary payment if the saved time earns one.

BEFORE MIGRATIONScreen supplier and platform exports

Catch incompatible headers, row-shape problems, and encoding issues before the first Shopify import.

BEFORE HANDOFFGive the client a readable report

Replace “bad CSV” with exact lines and a clear separation between automatic repairs and decisions.

Have a client file causing trouble? Put it through CommaFix.

Run the browser-only check →

Built by ThorntonAI for the repeated CSV cleanup work around Shopify migrations and catalog operations. CommaFix is independent and not affiliated with Shopify.