Our standard
We write to help you choose a method, understand a result and decide what to do next. Pages should answer a distinct question. Related questions link to one another rather than repeat the same article with a different keyword.
Sources and authorship
This library was developed with AI assistance. It is published by Trace; it is not presented as independent research or a credentialed expert’s review. We link to primary provider documentation and relevant public guidance where they support specific claims. We do not claim hands-on benchmarking of tools unless a page describes the actual test and its limitations.
Claims we avoid
We do not invent success rates, index coverage, testimonials or search-volume statistics. We distinguish image copies from facial similarity and identity evidence. Product pages disclose the current restricted test mode rather than imply a production search service.
Updates
Guides show their last substantive update date. Provider interfaces and policies can change, so follow the linked source for its current requirements. A date is not a guarantee of continuous review. We consolidate overlapping topics and update affected pages when the product changes.
Boundaries
These guides are educational. They are not formal background checks, legal advice or proof about an individual. Start with the guide library, and use the relevant platform or official process for a consequential decision.