PRIVACY & MEASUREMENT

What happens when you use this site

The free CSV demonstration runs locally in your browser. The text you paste is processed there; this site has no CSV upload endpoint. Do not paste customer, order or sensitive data. The paid ZIP is a separate offline download sold and delivered by Gumroad.

Current site measurement

Cloudflare Web Analytics injects a browser beacon on this Pages site to measure aggregate page views and performance. It does not use analytics cookies or collect the CSV text you paste into the checker. Cloudflare processes these analytics signals under its privacy policy as well as ordinary hosting requests. Page-view counts can include our own tests and automated traffic; we do not call those customer visits. We have not established a reliable outbound purchase-click count.

Product links and third parties

Links from this site to our Gumroad product contain campaign parameters so a resulting order can sometimes be attributed to this site. We do not currently have a reliable count of outbound clicks merely from those links. Once you leave for Gumroad, its own checkout and privacy terms apply. Links to Shopify Help Center point to external documentation; Catalog Preflight is independent and not affiliated with Shopify.

Questions

For product or privacy questions, use the seller contact route on the Catalog Preflight Gumroad page. Do not send product CSV files or personal information through unsolicited messages.

Last updated 19 October 2026. Measurement began when the Cloudflare beacon appeared on the production response; dashboard counts and human-visitor attribution remain unverified.