What broke in the move?
Paste the old address and the new one. Both are crawled from outside the network with the same checks, then compared as before and after, so the regressions that a migration introduces are named instead of buried in a side-by-side.
How this works
Both addresses get the same bounded audit, then each check is compared as before versus after. A check that was clean before and is worse now is a regression and is listed first; a check that improved is listed second; ties are counted. It does not invent competitor data or claim a full crawl of either site, so a regression it names is one it actually saw.
Questions
- What counts as a regression?
- A check that was clean on the old site and is worse on the new one: more errors, more warnings, or a check that stopped passing. Those are listed first, because a move should not quietly make the site worse.
- What is a "move"?
- A platform migration (Woo to Shopify, a custom stack to a new CMS), a host or CDN change, or a redesign that rebuilt the templates. Anything where the same pages answer from a new setup.
- Does it crawl the whole old and new site?
- No. It checks a bounded set of pages on each, the same way for both. That is enough to catch a template or routing break, which is what most migrations introduce, without spending minutes crawling a full catalogue.
- Does it change or store anything?
- No. Both sites are read from outside the network, compared in memory, and the result is returned to the page. Nothing is saved.