We publish a substitute list only where a record says what kind of product it is. gtmetrix.com's does not yet, so this page names none. The Code Quality category lists every offer we track alongside it.
Current gtmetrix.com Situation
Risk Level:source unconfirmed
Why: When we last read the page we cite for gtmetrix.com, on 2026-10-28, we found a change we could not reconcile with the terms we publish for it. We are not publishing a stability judgement for it until that is fixed.