How this free tool works
The checker parses user-supplied rendered HTML locally, extracts title, canonical, product structured-data presence, description metadata and buying controls. It flags missing signals with specific remediation. This is a single-page content inspection, not a site-wide crawl.
Worked example
Paste a product page without a canonical element or Product JSON-LD. The report lists both gaps and notes that actual checkout completion was not tested.
Limitations and data quality
Only pasted content is examined. Theme scripts can render extra elements after loading. This tool does not log into Shopify, verify checkout, inspect conversions, inventory or Merchant Center, or claim a real-time website scan.