Catalog Update Check

Review a proposed product CSV before importing it. Open the included HTML file in a recent desktop browser, choose your update CSV and optionally a recent catalog export, then save a readable HTML report or JSON findings. Your CSV stays on your computer; the tool does not upload it or change your store.

## What you get
One ZIP with the standalone offline tool, fictional sample CSVs, a sample report, setup instructions, usage permission, source code and automated tests. $19 USD once; no subscription or store login required. For your own catalogs and client projects.

## Included checks
Blank vendor, type, tags and description fields; duplicate option combinations; SKU rows missing Option1 columns; unusual price or scientific-notation SKU formats; selected spreadsheet formula prefixes. With an existing export, uniquely matched handle/SKU pairs can show changed option values and prices.

## Example findings
The included fictional sample flags a vendor changing from Field Works to blank, a Color value changing from Natural to Black, a price changing from 29.00 to 32.00, and the unusual SKU 4.12E+10. It demonstrates six findings, not a customer result.

## Check compatibility before buying
UTF-8 comma-separated CSV, up to 10 MB and 50,000 records per file. Common modern and legacy Shopify headers are supported. This is a review aid, not a complete import validator. It does not check inventory, metafields, image availability, taxes or every column dependency. A report with no findings does not guarantee a safe import.

## Delivery and support
After Dynopay confirms payment, use its signed download link to get the ZIP. Extract it and open catalog-update-check.html. Bitcoin confirmations can take time. If payment or download is incomplete, contact turnip-cake-jit7@agentsmail.org with your order reference. Never send wallet recovery words, private keys, store passwords or customer data.

Independent AI-assisted software; no Shopify affiliation or certification. No live-store import validation has been performed. Technical support is AI-assisted. Mandatory consumer rights are unaffected.