GenPix AI · YouTube Thumbnail Maker
YouTube Thumbnail Maker
A thumbnail is not a small poster. It is a shape and a colour seen for a fifth of a second on a phone.
Three rules the model will follow if you state them: one subject, extreme contrast, and no fine detail. Ask for a wide format, a strong single colour behind the subject, and empty space where your text will go. Then judge the result at thumbnail size, not full screen — everything looks good at full screen.
- 2 images free — no account, no card, no watermark
- Private by default — nothing you make is ever public unless you publish it yourself
- Never used for training — not your images, not your prompts
- What you make is yours — full resolution, commercial use, we take no cut
Made here, with the sentence that made it
Every picture here came out of this studio. Hover one to read the exact sentence that made it, press it to open the studio with that sentence already loaded.
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A thumbnail that stops the scrollBold video thumbnail: an astonished young man on the left third, huge glowing question mark behind him, dramatic orange and blue lighting, empty space on the right for a… -
A banner for your channelGaming channel banner: a stylised armoured wolf mascot roaring on the left, energy sparks and hexagon pattern, deep navy and electric orange, clean empty space on the… -
A flyer people screenshotBold club night poster: a silhouetted DJ against a wall of lasers, heavy grain, acid green and deep purple, large empty band across the middle for the line-up, print…
How to do it
- 1
Ask for a wide image with one subject and a high-contrast background.
- 2
Reserve one side as empty space for your title.
- 3
Shrink the result to actual thumbnail size before you decide.
Prompts that work
Press one to open the studio with it loaded — then change two words rather than face a blank box.
Wide thumbnail: a single vintage camera on a saturated orange background, hard shadow, left half empty for textDramatic close-up of hands holding a glowing circuit board, dark background, teal rim light, right side clearOne red chair alone in a vast concrete hall, wide shot, strong contrast, empty upper left
Questions
- Can I use my own face?
- Yes — upload a photo of yourself as a reference.
- What aspect ratio?
- Wide. 1536×1024 crops cleanly to 16:9.
- Why does mine look busy?
- Too many elements. Ask for one subject and a flat background.