Thumbnail Generator
Derive a consistent set of thumbnails or responsive size-variants from a folder of source images — square crops for grids, srcset widths for the web, smart-cropped to keep the subject centered — and emit them with predictable names. Scope the target sizes, crop strategy, and naming convention FIRST so the output plugs straight into a gallery or srcset, then build every variant and confirm the matrix is complete. Covers thumbnails, responsive images, srcset, image variants, gallery tiles, and preview generation.
How it runs
| # | Step | Who runs it | What happens |
|---|---|---|---|
| 1 | Scope the variants | Planner | lock sizes, crop strategy, format, and naming |
| 2 | Build the variants | Developer | generate every variant per source with the naming convention |
| 3 | Evaluate | Reviewer | Grade the deliverable against every acceptance criterion. All pass → finish; any fail → loop back and fix the gap. |
| 4 | Finish | Developer | All acceptance criteria met. Stamp a short summary and report DONE. |
Say something like "generate thumbnails" or "make responsive image variants" or "create srcset images" or "thumbnail a folder" or "gallery thumbnails" in chat to start it.