A decision-stage post comparing generic image captioning with commercial prompt workflows.
compare image to prompt generators by output usefulness: browser privacy, prompt formats, negative prompts, product photo workflow, ad creative workflow, image-to-video prompt support, saved briefs, templates, batch variants, API readiness, pricing clarity
generic caption only, no copy action, no commercial examples, vague AI claims, no privacy note, no pricing path
This teardown gives BOFU readers a buyer checklist rather than a generic "best tools" article.
A useful image-to-prompt generator is not the one that writes the longest caption. It is the one that gives you copy-ready outputs for the tool you actually use.