Schema drift
Stops a feed when columns, formats, or product structure change unexpectedly.
Managed supplier feeds for Shopify
Make any supplier file
safer for Shopify.
CatalogSteward analyzes supplier CSV and Excel files, detects risky catalog data, and prepares a reviewable path to Shopify—before anything can reach your store.
No blind imports.
No surprise deletions.
No spreadsheet wrestling.
Free file diagnostic
Check your catalog before you import it.
CSV and XLSX files stay in your browser during analysis. Nothing is uploaded or retained.
Drop a supplier file hereor click to browse · CSV or XLSX · up to 25 MB
01Detect structure
02Flag dangerous changes
03Approve a safe result
What CatalogSteward does
Convert the catalog.
Control the changes.
A Shopify supplier feed conversion maps a vendor's products, variants, SKUs, prices, inventory, images, and options into a structure Shopify can accept. CatalogSteward adds the missing safety layer: it diagnoses the source, documents supplier-specific rules, and makes uncertain or destructive changes visible for review.
Margin protection
Flags prices below cost and blocks changes outside your approved pricing rules.
Catalog diff
Shows every new, changed, missing, or potentially destructive item before import.
Human review
Routes uncertain mappings to a catalog specialist instead of guessing silently.
From ugly file to approved feedOne setup.
One setup.
Every update handled.
Start with a browser-only diagnostic. When you are ready, a catalog specialist turns your business rules into a monitored supplier recipe.
- 1Send the source
Upload a CSV or Excel file. Recurring plans can retrieve a supplier URL, sheet, or SFTP feed.
- 2Approve a representative sample
Confirm how products group, variants behave, prices calculate, and existing content is preserved.
- 3Review the complete change set
See new products, price movements, inventory changes, missing records, and exceptions.
- 4Deliver or synchronize
Download a Shopify-ready file or approve draft changes through a managed connection.
Founding customer pilot
Start with one supplier.
The diagnostic is free. Managed onboarding begins only after we inspect the real file and confirm the scope.
Free
Understand the structure and risks without uploading your data.
- CSV and XLSX analysis
- Detected field mapping
- Safety findings
- Downloadable report
from $499
A reviewed Shopify-ready catalog plus a reusable supplier recipe.
- Up to 10,000 variants
- Sample approval
- Pricing and inventory rules
- Validation and delivery
from $149/mo
Recurring updates with change detection and supervised approval.
- Scheduled retrieval
- Schema-drift alerts
- Catalog change report
- Human exception review
Website prices are starting estimates. Scope, currency, applicable taxes, and final fees are confirmed in writing before paid work begins.
Frequently asked questions
Shopify supplier feeds, answered.
Direct answers about converting, diagnosing, and managing supplier catalog files.
What is a Shopify supplier feed?
A Shopify supplier feed is a CSV, Excel, XML, JSON, API, or other product-data source supplied by a vendor. It usually contains SKUs, product names, variants, prices, inventory, barcodes, and image links that must be mapped and normalized before Shopify can use it safely.
How do I convert a supplier CSV or Excel file for Shopify?
First identify the product, variant, SKU, price, inventory, image, and option columns. Then group variants, normalize values, validate identifiers, and review the proposed changes before creating a Shopify-compatible file. CatalogSteward diagnoses the source structure and risks before a managed conversion begins.
Does CatalogSteward upload or store my supplier file?
Not when you use the free file diagnostic. CSV and XLSX analysis runs locally in your browser, so the file contents are not uploaded to CatalogSteward or retained by us. If you choose managed onboarding, we process only the files you deliberately provide for that service.
Does the free diagnostic change my Shopify store?
No. The diagnostic has no connection to your Shopify store and cannot create, update, or delete products. It reads a file in your browser and produces a risk report that you can review and download.
What catalog problems does the diagnostic detect?
It detects likely Shopify field mappings and flags duplicate SKUs or barcodes, missing identifiers or prices, prices below detected supplier cost, invalid image links, negative inventory, and uncertain product or variant grouping. Results are diagnostic findings, not a guarantee that a file is import-ready.
Can CatalogSteward handle products with variants?
Yes. CatalogSteward looks for style, parent, model, colour, and size fields to estimate how source rows should be grouped into Shopify products and variants. A managed onboarding includes a representative sample so you can approve grouping and option behavior before delivery.
Why use CatalogSteward instead of asking an AI assistant to transform the file?
An AI assistant can help write a one-time transformation, but the operational risk remains with you. CatalogSteward focuses on repeatable supplier rules, reviewable changes, safety checks, and human handling of uncertain mappings so a silent source change does not become a destructive store update.
How much does CatalogSteward cost?
The browser-based diagnostic is free. Founding-customer supplier onboarding currently starts at $499, and recurring managed feeds start at $149 per month. Final scope, currency, taxes, and fees are confirmed in writing after we inspect the source file.
Is CatalogSteward affiliated with Shopify?
No. CatalogSteward is an independent product operated by Homie Lab Inc. Shopify is a trademark of Shopify Inc.; CatalogSteward is not endorsed by, sponsored by, or affiliated with Shopify Inc.
Accountable operator
Built and operated by Homie Lab Inc.
CatalogSteward is a focused software product from Toronto-based technology company Homie Lab Inc.. Questions about a file, a pilot, privacy, or support go to a real business at support@catalogsteward.com.