GTIN and duplicate barcode validator
Paste up to 5,000 barcode values. Check lengths, check digits, Google prefix rules, and duplicates locally.
Open GTIN validatorMerchant resource center
Practical Shopify product-data guides for enriching catalog fields, improving product data for Google Shopping, validating identifiers, and preparing cleaner feeds without giving write access.
Free browser tools
Paste up to 5,000 barcode values. Check lengths, check digits, Google prefix rules, and duplicates locally.
Open GTIN validatorCheck up to 250 public image URLs against Google's upcoming 500 x 500 requirement and export the evidence.
Open image checkerPaste common issue messages and get source-backed Shopify fix locations and verification steps locally.
Diagnose an error15-minute catalog preflight
A practical Shopify catalog checklist for titles, descriptions, taxonomy, identifiers, variants, media, SEO fields, and policy clarity.
7 min read
Open guideFrom thin listings to useful product records
A practical Shopify product data enrichment workflow for categories, attributes, metafields, identifiers, variants, images, price, and availability.
8 min read
Open guideIdentifier cleanup without guesswork
Understand the difference between GTINs, barcodes, SKUs, MPNs, and brands before cleaning up Shopify product identifiers.
8 min read
Open guideFree downloadable preflight
Use this free Shopify checklist to verify Google Shopping IDs, GTINs, titles, images, price, availability, variants, and structured data before feed debugging.
8 min read
Open guideGoogle image deadline preflight
Find Shopify product images that may be affected by Google's 500 x 500 minimum-resolution enforcement beginning January 31, 2027.
6 min read
Open guideUse the source-backed Shopify fix library for GTIN, price, availability, crawl, and image errors.
The guides help you inspect a few products manually. FeedSnapshot applies the same practical discipline across a Shopify sample and turns repeated gaps into a prioritized report.