AI thumbnail maker
Write what the cover should show, pick a model, get a 16:9 picture. Nano Banana 2 also edits a cover you upload: change the background, the colours or an object. The credit price is shown before you generate; a failed image is refunded.
- 16:9 default
- Text-to-image or edit
- From 12 credits
- Failed images refunded
Checking that generation is available.
"3 HEARTS" in the picture · Ideogram 4.516:9 · medium2026-10-30
Three covers, three models
Each was made from one prompt on this page, at 16:9 and about 1K wide, on 2026-10-30. Open one to read its prompt, its model and what it cost.
Scene 01
"3 HEARTS" in the picture · Ideogram 4.5
The prompt asked for the words "3 HEARTS" in huge white letters; Ideogram spelled them right on the first try. The octopus came out as a cartoon, not a photo: say "photograph" if you want one. 1280×720.
Prompt
YouTube thumbnail: a red octopus on dark blue water, three glowing hearts drawn inside its body, and the words "3 HEARTS" in huge bold white letters on the left. High contrast, clean, flat background.
- Model
- Ideogram 4.5
- Settings
- 16:9 · medium · 1280×720
- Generated
- 2026-10-30
- Took
- 16 s
- Provider cost
- $0.06
- Here
- 15 credits
- Request
- 01a18d5f-2d03-7d51-9da8-41981fb51928
Scene 02
Cracked phone on a desk · Nano Banana 2
Asked for a cracked phone filling the right two thirds, a screwdriver, side light and a blue glow, with no text. All of it came through; the phone sits a little lower and further right than asked. 1376×768.
Prompt
YouTube thumbnail: a close-up of a smartphone with a badly cracked screen lying on a dark wooden desk, a small screwdriver beside it, dramatic side light, deep blue background glow, bold and simple composition with the phone filling the right two thirds. No text, no logos.
- Model
- Nano Banana 2
- Settings
- 16:9 · 1K · 1376×768
- Generated
- 2026-10-30
- Took
- 18 s
- Provider cost
- $0.08
- Here
- 20 credits
- Request
- 01a18d5e-d6d5-7300-9027-6705f7e7d13c
Scene 03
Messy desk, tidy desk · FLUX 3
Asked for a before and after of one desk, split by a thin white line. Both halves show the same desk, monitor and chair; the tidy side gained a lamp. The slowest of the three to come back. 1360×768.
Prompt
YouTube thumbnail: a split picture of the same small home office desk, messy with cables and papers on the left half, perfectly tidy with a plant and a lamp on the right half, warm daylight, clean flat look, a thin white line down the middle. No text, no logos.
- Model
- FLUX 3
- Settings
- 16:9 · 1k · 1360×768
- Generated
- 2026-10-30
- Took
- 58 s
- Provider cost
- $0.05
- Here
- 12 credits
- Request
- 01a18d5f-795f-79e3-9c24-3232b4abde95
What is this AI thumbnail maker?
ClipScript's thumbnail maker sends your words to one of three image models and returns a 16:9 picture sized for a YouTube cover: Google's Nano Banana 2, Ideogram 4.5 (the one for readable words in the picture) or Black Forest Labs' FLUX 3. Upload a cover and Nano Banana 2 edits it instead. You pay per image in credits, 12 to 20 at 1K, shown before you generate; a failed or refused image is refunded. The three covers on this page were made here, one per model, each with its prompt and price.
- Models
- Nano Banana 2, Ideogram 4.5, FLUX 3
- Size
- 16:9, about 1K wide
- Price
- 12 to 20 credits an image
- Edit an upload
- Nano Banana 2
How to make a thumbnail
Describe the picture
One subject in the middle, a plain background, strong colours. Say “no text” unless you want words; for words, pick Ideogram 4.5 and put the words in quotes.
Pick the model and generate
The credit cost of your exact choice is shown before you press the button. One request is one image.
Test it, then upload
Open the result in the thumbnail tester beside other cards before you put it on the video.
What a thumbnail costs here
Credits per image for each model, computed from the catalog. 1 credit is $0.01 with the smallest pack. Packs are on the pricing page.
| Model | Size or quality | Credits per image | With the smallest pack |
|---|---|---|---|
| Nano Banana 2 | 1K | 20 | $0.20 |
| Ideogram 4.5 | low | 8 | $0.08 |
| Ideogram 4.5 | medium | 15 | $0.15 |
| Ideogram 4.5 | high | 55 | $0.55 |
| FLUX 3 | 1k | 12 | $0.12 |
AI thumbnail questions
Is the AI thumbnail maker free?
No. You buy credits and pay per image, 12 to 20 credits at 1K depending on the model; 1,500 credits are $15. A failed or refused image is refunded. The downloader, the tester and the transcript tools on this site are free.
Can it put my face on the thumbnail?
Upload your own photo and ask Nano Banana 2 to change the background or add an object around it. Not allowed: public figures, swapping a face into another picture, undressing or sexual edits. The provider's safety filter can refuse a request; a refused image is refunded.
Will the words in the picture be spelled right?
Ideogram 4.5 is the model built for text in pictures; the others often misspell. We have not recorded examples on this site yet, so we make no promise. Check before you upload.
What size is the result?
About 1K on the long side in 16:9, which YouTube accepts and scales. For a sharper 1280×720, run the result through an upscaler.
Can I use the picture commercially?
Each model's provider sets the terms for its output; this site passes them through and adds no restriction of its own. Read the provider's terms for the model you pick.
Is this the official tool of any of these models?
No. ClipScript is an independent site and is not affiliated with Google, Ideogram or Black Forest Labs.
Make a thumbnail
Describe the cover and pick a model. The credit cost is shown before you generate.
More tools
Explore each tool’s instructions, output limits and available recorded examples.