Thumbforge — Roblox Thumbnail Studio

00 · API key

Stored only in this browser, sent only to Google. Get one at aistudio.google.com/app/apikey.

01 · Concept

02 · Title text

Optional. Rendered as bold 3D text — leave empty to keep clean dead space for your own text.

03 · Output

Model

Aspect

Size

Variants

04 · References

Click or drop images — avatars, old thumbnails, style refs

Style rules (system prompt)

Results

Generated thumbnails land here. Describe a concept on the left — or start from a preset — then hit Generate.