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THUMBSTUDIO AI
World-Class Thumbnail Generator
FREE · No API Key
Choose Your AI Engine
All options work. The built-in engine needs no key and works offline.
Built-In Engine
Smart design algorithm — no API key, no internet required, instant generation
100% FREE · No Limits
Google Gemini
Free tier from Google AI Studio. Get your free key at aistudio.google.com
FREE Tier Available
Claude (Anthropic)
Most creative output. Premium quality designs. Get key at console.anthropic.com
Paid · $5/mo minimum
✦ Generate
⊞ Batch Mode
Style Preset
🤖 Auto
🎮 Gaming
💻 Tech
💰 Money
😱 Drama
👑 Luxury
🍔 Food
⚽ Sports
📚 Edu
📰 News
⬜ Minimal
💜 Neon
📺 Retro
🎬 Cinema
Mood / Energy
🔥 High Energy
🌑 Mysterious
🌊 Calm
⚡ Urgent
😊 Happy
💀 Dark
Color Scheme Override
Auto
🔴 Red/Black
🟡 Gold/Black
🔵 Blue/White
🟢 Green/Dark
🟠 Orange/Dark
💜 Purple/Black
⬜ Clean White
🩵 Cyan/Dark
🩷 Pink/Dark
Add Sticker / Emoji
⚡ Built-In Engine
Press Generate or Ctrl+Enter
Designing Thumbnails
Analysing your concept...
Detecting style & keywords
Selecting color palettes
Composing layouts
Rendering at full resolution
Applying professional effects
Describe your video concept above and hit Generate. No API key needed!
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Selected Thumbnail
Generate a thumbnail and click it to edit properties here.