Catalogue Check — Offline CSV Checker for Product Sellers

Catch duplicate SKUs, missing product details and malformed CSV rows before your next catalogue import.

Catalogue Check is a small offline browser tool for sellers who keep a simple product catalogue in CSV format. Open the included HTML file, load your catalogue, choose the columns to check and download a clear review report. Your original file stays unchanged.

CHECKS INCLUDED

• Duplicate SKUs, with optional case-insensitive comparison

• Missing values in selected SKU, title and price columns

• Leading or trailing whitespace and your chosen title-length limit

• Simple price formatting, missing or repeated headers, inconsistent row widths and blank records

• Some formula-like text that merits care when opening in a spreadsheet

WHAT YOU RECEIVE

• Catalogue Check 1.0.0: a standalone HTML tool

• Built-in fictional sample catalogue

• Printable HTML and JSON report exports

• Quick-start guide and permission for your own personal or internal business use

REQUIREMENTS AND LIMITS

Use a current desktop Chrome or Edge browser. No Excel licence, installation, subscription or API key is required. Supports UTF-8 comma-, semicolon- and tab-separated files up to 2 MB, 10,000 data records and 250 columns. The screen shows up to 200 issues; reports hold up to 20,000, with a warning if that cap is reached.

Designed for one product or variant per row. It does not read XLSX, modify your data, connect to your shop or validate every rule of a marketplace. Repeated SKUs may be intentional. No flags means only that the selected checks passed. Use your destination platform’s own checks before importing.

PRIVACY AND SUPPORT

The tool makes no network requests and keeps no saved catalogue history. Processing happens in the current browser tab. Saved reports remain on your device. Support covers using the supplied tool; custom cleaning and integrations are not included. Contact Donato Goods through the store contact page with a fictional example rather than private catalogue data.

Created with AI assistance and functionally tested. Digital download; no physical item is shipped. Your statutory rights remain unaffected.