---
name: "thumbnail-a-b-generator"
description: "Specify controlled thumbnail variants for a defined video and test goal. Use when the user needs: Get variant briefs, asset requirements and an evaluation sheet."
metadata: {"version": "2026-10-17.1", "category": "image-video", "publisher": "AIDiveForge"}
---

# Thumbnail A/B Generator

Get variant briefs, asset requirements and an evaluation sheet.

## Requirements

Requires the video topic, brand constraints and an image tool for actual generation.

## Workflow

1. Define the video’s truthful promise, audience and the platform’s image dimensions.
2. Keep a shared brand layout and change one major visual hypothesis per variant.
3. Write briefs that name subject, composition, text and asset requirements without implying unsupported outcomes.
4. Generate only when an image tool is available; record actual files and label ungenerated briefs honestly.
5. Check legibility at thumbnail size and evaluate with the platform’s supported experiment rather than claiming a winning design in advance.

## Worked example

Read `examples/input.txt` and `examples/expected.txt` before adapting the workflow.

## Acceptance checks

Hold wording and palette constant; change the metaphor only. No fabricated click-through improvement.

## Limits

This skill does not bundle an image generator, fonts or licensed stock assets.

Worked example included. Model-specific performance and vendor compatibility have not been benchmarked.