CatalogPreflight

YOUR NEXT SHOPIFY UPDATE, REVIEWED

Small CSV mistake.
Big catalog headache.
Catch it here.

See what your product update would change. Review unexpected prices, blank fields and variant mismatches before you import.

Check my CSV files ↗See a sample report →
Local file processingNo store connectionFree to try
01

Bring two CSVsYour current export + proposed update.

02

See the differencesInspect changed cells and flagged risks.

03

Review, then decideExport a report for your next step.

THE FREE CHECKER

Your catalog. A little more clarity.

Choose the same overwrite setting you intend to use in Shopify. This prototype compares existing-product updates; both files need Title and URL handle (or Handle) columns.

BUILT FOR THE MOMENT BEFORE IMPORT

Less spreadsheet guesswork.
More visible decisions.

WHAT THIS CHECKS

Useful, inspectable findings

  • Included blank cells versus omitted columns
  • Price movements and product visibility changes
  • Missing option columns and unmatched variant sets
  • Duplicate option combinations and malformed CSV
  • Current and legacy Shopify column names

KNOW THE LIMITS

A deliberately narrow first version

Markets, metafields, image operations and live inventory state are outside coverage. Unknown columns are flagged. This does not predict every Shopify import behavior, certify a safe import, or replace a backup.

It checks two files locally. It does not provide AI advice, access your store, or execute imports.

FOR FREELANCERS & AGENCIES

Make the handoff
look like your work.

$9 USD / one-time

Agency Edition adds complete branded HTML reports, reviewer notes and reusable review policies. Download the tool and run it locally. Reports can be printed to PDF. No subscription or store access.

One purchaser or agency; client reports may be shared. Tool redistribution is not included. The same coverage limits apply. Applicable taxes may be added at checkout.

Preview a complete client report · See Agency Edition and license details

Buy Agency Edition — $9 one-time

Checkout hosted by Polar. Opens a new tab so your comparison stays here. Check included benefits before paying.

Independent tool; not affiliated with Shopify.

Privacy and rule sources

Your CSV contents remain in browser memory. No analytics, cookies, external scripts or file uploads are used. Clearing files removes this page’s references; downloaded reports stay on your device. When hosted, the hosting provider may process ordinary request logs such as IP addresses. Do not include customer or payment records.

Rules reviewed 29 September 2026 against Shopify’s product CSV documentation and import guidance. CSV record numbers include the header, not physical text lines inside quoted cells. Reports may contain confidential product data; share them deliberately.