Messy SKU matching
Case, spaces, slashes, and dashes no longer break a straightforward comparison.
Built for catalog and purchasing teams
Turn two catalog files into a clean update file.
Upload your current catalog and a supplier's new list. SupplyDiff matches messy SKUs, catches price and pack-size changes, and creates a review-ready CSV in minutes.
Files stay in your browserNo account requiredEvery match is reviewable
Free beta · no card
Compare two catalogs
1
Current catalogYour source of truth
2
Supplier updateThe new price file
3
Review & exportApprove the changes
Private by design. Your files are parsed and compared on this device. SupplyDiff does not upload or store them.Current CSV sample · Update CSV sample
01Upload two catalog files
02Inspect flagged changes
03Download the review CSV
Guardrails built in
Useful automation without silent guesses.
Exact product identifiers win. Formatting-only SKU differences are normalized. Ambiguous rows remain visible for customer review.
True unit-cost changes
When pack size changes, SupplyDiff compares normalized unit cost instead of claiming a false saving.
Reviewable exceptions
Duplicate SKUs, invalid prices, currency changes, and fuzzy description matches are never silently merged.
Safer spreadsheet export
The result preserves source rows, match method, confidence, and formula-safe cell values.
Built around the actual spreadsheet job
One tool, three high-friction workflows.
Use SupplyDiff when a new supplier file arrives, before a price increase reaches purchasing, quoting, or your product catalog.
Purchasing teams
Compare supplier price lists
Find changed prices, new SKUs, discontinued items, and rows that need a person to review.
See the workflow →Margin protectionAudit a supplier price increase
Separate real unit-cost increases from pack-size changes before accepting an updated list.
See the audit guide →Agencies & consultantsUse SupplyDiff with client catalogs
Bring a recurring supplier-file workflow and help shape the export your clients actually need.
Start a partner conversation →Common questions
Before you compare a real supplier file.
How do I compare two supplier price lists?
Upload the catalog you use today, then the supplier's updated CSV or XLSX. SupplyDiff matches rows, flags changes and exceptions, and prepares a review CSV.
Do my files leave my computer?
No. SupplyDiff parses and compares both files in your browser. The public tool does not upload or store your catalog data.
What changes does SupplyDiff detect?
It identifies price changes, pack or unit-of-measure changes, new products, discontinued products, duplicates, invalid prices, and ambiguous matches that need review.
Does SupplyDiff update my ERP or store automatically?
No. Nothing is written to an ERP, PIM, or ecommerce platform. You review the output and decide what to import.
Free tool + design partner program
Prove the workflow before buying anything.
Use the full beta free. If the output solves a real supplier-update problem, bring one sanitized workflow and help shape the paid review service.