thumbnail-ab-tester — independently scanned and version-tracked by SaferSkills.
SaferSkills independently audited thumbnail-ab-tester (Agent Skill) and scored it 100/100 (green). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 0 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.
Findings & checks · 0 flagged
Every scanned point with the score it earned and what moved between them.
First recorded scan — no prior version to compare against.
The primary manifest — the file an agent reads to learn what this artifact does.
Generate 3-5 thumbnail concepts, score them, ship the winner.
For one clip, produce variants across these axes:
| Axis | Option A | Option B | Option C |
|---|---|---|---|
| Frame | Hook moment (start) | Climax (mid) | Payoff (end) |
| Text | One word | Short phrase | None (visual only) |
| Face | Tight crop (eyes visible) | Medium shot | Object only |
| Contrast | Dark bg + bright subject | Inverted | High saturation |
Pick one option per axis → 3-5 thumbnails total. Don't generate 30 — too much noise.
| Factor | What to check |
|---|---|
| Hook clarity | Can a viewer read the story in < 1 sec? |
| Face / emotion | If a face: is the emotion strong & specific? |
| Text legibility | Readable at 320px wide (IG feed size)? |
| Contrast | Subject pops from background? |
Variant A — score 32/40
Frame: t=2.4s (climax)
Text: "₹4,300 in 14 min"
Notes: high contrast, specific number, face in lower third
Strongest factor: hook clarity
Variant B — score 28/40
...
Winner: A
Why: specific number + face emotion drives the highest CTR pattern.~30 seconds. Free. No account. Every finding cites a rule and a line of evidence.