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🖼️ Thumbnail Prompting
This page documents how thumbnail prompts are constructed, formatted, and passed to the generation engine to produce YouTube-ready thumbnails.
🧠 Prompt Rules
Thumbnail prompts are built from:
The clip category (montage, hit, miss, etc.)
The tone and style keywords derived from tags or folder context
The clip date, rendered in Mon DD YYYY format
A visual signature (always includes the “brand llama”)
🖼️ Default Prompt Composition
For standard highlight thumbnails:
1280×720 canvas, Fortnite branding, vibrant color
- Top left: YouTube logo
- Center left (stacked): “FORTNITE” / “LIVE STREAM!” / “with Gramps!”
- Bottom right: Date (“Aug 03 2025”)
- Right side: Stylized purple llama (brand mascot)
Use Fortnite-style font and colors: #f7338f (main), #10abba (shadow), #1c0c38 (stroke)
📁 Output Rules
File size must be < 2MB
Vertical and horizontal thumbnails may vary in layout
If output fails validation (e.g. wrong size or file type), regenerate silently