CatalogWash

Shopify Supplier CSV Cleaner

See exactly how Shopify will read your products, variants, and images. Free report and preview. $9 per cleanup session — re-export the same file as many times as needed for 24 hours.

Export format tested with Shopify product CSV import.

CatalogWash helps reduce import errors, but you should review business-critical product data before importing.

Free report and preview. $9 per cleanup session with 24-hour re-exports. No Shopify login required.

Local-first parsing

How it works

1. Upload supplier file

2. Map columns

3. Fix import blockers

4. Export Shopify-ready CSV

Your file stays in your browser unless you use AI mapping or save your session.

Your product data stays yours.

We do not store your product list by default. Your CSV/XLSX is processed in your browser. Only mapping/report metadata is saved if you choose to save a session. AI mapping sends only headers and a small sample after you ask for it.

Browser-first processingNo Shopify login requiredNo product data stored by defaultAI only when requested

Beta pricing

Free report and preview. $9 per cleanup session — re-export the same file as many times as needed for 24 hours.

Free: Upload, map, report, preview

$9 per cleanup session: re-export the same file for 24 hours

Later: VA/Agency packs

Public beta

If CatalogWash cannot fix your CSV, send us the Shopify error message and we will use it to improve the rules.

Send feedback

Drop or choose a supplier CSV/XLSX fileSupports CSV, XLSX, and XLS files. Your file is processed locally in your browser unless you explicitly use AI mapping or save your session.

Recover saved session

For privacy, we email a one-time recovery link instead of listing sessions from an email address. We saved your mapping and report summary only, so please re-upload the original file to re-run validation and export.

Built for messy supplier files

Detect duplicate SKUs and handles

Preview product to variant to image hierarchy

Auto-fix safe whitespace, quote, handle, and price issues

Download sample CSV

Found a CSV this tool could not fix? Send feedback.

CatalogWash links

Tool Fix Shopify CSV import errors Convert supplier CSV to Shopify Shopify variant CSV errors Fix Shopify duplicate SKU error Shopify invalid inventory quantity fix Shopify image URL CSV error Privacy Terms Refund Policy Contact

Export format tested with Shopify product CSV import. Not affiliated with Shopify. CatalogWash helps reduce import errors, but you should review business-critical product data before importing.