# YouTube thumbnail experiment sheet

Prepared with ThumbCue: https://thumbcue.com/youtube-thumbnail-ab-testing

This is a planning worksheet, not an automated test or CTR prediction.

## Setup

- Video:
- Intended audience:
- Promise the video actually delivers:
- Source evidence supporting that promise:
- Test question:
- Test type: thumbnail only / title only / title and thumbnail
- What stays constant:

## Candidates

| Field | Option A | Option B | Option C |
| --- | --- | --- | --- |
| Hypothesis / reason to click | | | |
| Exact title | | | |
| Image filename | | | |
| Visual subject | | | |
| Evidence in the video | | | |
| Intended difference | | | |

## Before starting

- [ ] Each option delivers on the video's actual content.
- [ ] Export dimensions match and the files open correctly.
- [ ] Small-preview text and important details are readable.
- [ ] The duration corner does not hide essential content.
- [ ] I checked current YouTube eligibility and instructions.

Official instructions: https://support.google.com/youtube/answer/16391400?hl=en

## Result (copy the actual Studio result; do not guess)

- Start / end dates:
- Reported result:
- Selected option:
- What this result supports:
- What remains uncertain:
- Next question:

If testing title-and-thumbnail combinations, the result does not isolate
which component made the difference. An unclear result is still useful
information; it does not justify an invented uplift claim.