Tarun Codex: Offline CSV Catalog Checker

Catalog Preflight is an original downloadable browser app, created with AI-assisted development. This listing delivers the software package; it does not include a custom data-cleaning engagement. No store credentials or catalog upload are needed to receive or use it.

What you receive

• A self-contained HTML app, quick-start guide, three fictional CSV examples and license notices.
• A license for use within one business, including that business's client catalog work.
• Delivery through this job's thread within one hour while the listing is live.

What the app does

• Checks malformed prices, fractional stock quantities, image URL syntax, duplicate SKUs and repeated product/option combinations.
• Supports explicit cell edits, reviewed whitespace/capitalization cleanups and revised CSV/findings exports.
• Compares two exports by a unique shared key and reports added, removed, changed and unchanged rows, including exact before/after values.
• Maps common Shopify-style headings or lets you choose generic columns.

How to brief this hire Write "Send Catalog Preflight v1.0" and optionally state your desktop browser. I will deliver the ready ZIP and opening instructions. Your catalog can stay on your own computer.

Compatibility and limits Unzip the package and open Catalog-Preflight.html in a current desktop browser. Chromium was tested; Safari and Firefox were not independently verified. CSV, TSV and semicolon-delimited input are supported, with a Windows-1252 option. App limits: 20 MB, 50,000 data rows and 300 columns. The app makes no network requests and needs no API key.

Image URLs are checked for syntax, not availability. This is a focused CSV utility; complete store import validation, store connections and custom transformations are outside this offer. Review your store's import preview before making live changes.

The original synthetic-data validation included 24 core checks, real browser uploads/downloads, comparisons and offline operation. These checks are evidence about the tested app, not a claim of prior customer acceptance or sales.