Use case
Make YouTube thumbnails that get clicked with AI
A thumbnail has about a second to win the click, so the job is simple: one clear subject, one emotion and enough contrast to read at the size of a postage stamp. Generation lets you build several competing versions of the same idea in minutes, which matters because the winning thumbnail is rarely the first one you imagined.
Why this approach works
- Thumbnails reward simple compositions, which models handle best: one subject, a plain background and strong light.
- You can generate the background and subject separately, then composite and add real text in a design tool for pixel-sharp type.
- Cheap, fast variants make A/B testing practical, and YouTube lets you swap thumbnails after publishing.
Step-by-step workflow
- 1
Write the promise in four words
Decide what the viewer gets and compress it. The thumbnail text, the title and the image should add up to one idea, not repeat each other.
- 2
Generate the subject and scene
Describe one large subject with a clear emotion, a simple background in a contrasting colour and dramatic side lighting. Leave a clean zone for text on one side.
- 3
Make three to five variants
Change one variable at a time: expression, background colour or framing. Use a fast model for the exploration and a stronger one only for the finalist.
- 4
Add text and polish
Place the text in a design tool with a thick font, high contrast and an outline. Check the result at 160 pixels wide, since most viewers see it that small.
- 5
Test and keep the winner
Publish with the strongest variant and compare click-through after a few days against the others. Keep a library of winners to learn what your audience responds to.
Recommended models
| Model | Role | Credits |
|---|---|---|
| Nano Banana 2 | Fast, expressive subjects for variant testing. | 3 / image |
| Gemini 3 Pro | Finalist renders with stronger detail and lighting. | 5 / image |
| SeedDream v4.5 | Punchy colour and bold compositions. | 1 / image |
| FLUX Schnell | Near-instant layout sketches. | 1 / image |
Example prompts
Close-up of a young man with a shocked, wide-eyed expression, looking at the camera, bright yellow background, strong rim light in magenta, sharp focus, empty space on the left third, high contrast, no text.
A matte black wireless headphone floating at a slight angle, glowing cyan edge light, dark gradient background with soft particles, dramatic shadows, ultra sharp product render, space on the right for a headline.
Split-screen composition: left half a messy cramped room in dull grey tones, right half the same room tidy and bright with warm light, clean vertical divide in the middle, strong colour contrast between the halves.
What thumbnails cost per video
Per video: four quick sketches, four variants of the best idea and one finalist at higher quality.
| Item | Model | Qty | Credits each | Subtotal |
|---|---|---|---|---|
| Layout sketches | FLUX Schnell | 4 | 1 | 4 |
| Variants | Nano Banana 2 | 4 | 3 | 12 |
| Finalist render | Gemini 3 Pro | 1 | 5 | 5 |
| Total per video | 21 credits |
| Plan | Allowance | Per video | Of monthly credits |
|---|---|---|---|
| Starter (€15) | 100 credits | €3.15 | 21% |
| Pro (€35) | 300 credits | €2.45 | 7% |
| Business (€89) | 900 credits | €2.08 | 2% |
Most of the cost is exploration. Once you know your channel’s winning pattern, you can skip the sketches. Price your own mix with the video cost calculator.
Frequently asked questions
What size should a YouTube thumbnail be?
- Use 16:9, ideally 1280 by 720 pixels or larger, under the platform file size limit. Generate in 16:9 so you do not need to crop.
Why not put the text in the prompt?
- Generated lettering often contains small errors and cannot be edited. Real text added afterwards stays sharp, editable and brand-consistent.
Can I use my own face?
- Yes, a real photo of you often performs better than a generated face. Use generation for backgrounds and objects and composite your photo on top.
Related use cases
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- A week of social media contentPlan and generate seven days of posts, stories and short clips for a brand in a single sitting.
- Podcast covers and video clipsBuild podcast cover art, episode graphics and animated audiograms that stand out in the feed.
- Course and ebook visualsCreate covers, lesson illustrations and promo clips for online courses, ebooks and digital products.
Start your YouTube thumbnails workflow
Subscribe, open the studio and run the first step of this workflow with the recommended model.
Start creatingA subscription is required before generating. Plans from €15/month, cancel anytime.