PromptCanvas — AI Image Prompts for ChatGPT

About

Better AI images from ChatGPT — without writing perfect prompts.
PromptCanvas adds a clean prompt-builder bar right above ChatGPT's composer. Type a short idea, pick your style, ratio and quality, and PromptCanvas expands it into a rich, detailed prompt and sends it straight to ChatGPT for image generation.
Most people don't know how to write good image prompts. PromptCanvas does it for you.
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WHAT IT DOES

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• Prompt-builder bar inside ChatGPT — no new tabs, no copy-paste

• Pick a style (Cinematic, Anime, Photoreal, Oil painting & more)

• Choose aspect ratio (16:9, 1:1, 9:16…) and quality

• Attach a reference image for style or composition

• One click expands your idea and auto-sends it to ChatGPT
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PRO FEATURES

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• AI Expansion — use your own OpenAI or Gemini key for smarter prompts

• Detail levels — Short, Rich or Ultra

• Negative prompts — exclude what you don't want

• Story Mode — keep the same character, style & palette across an image series

• 5 premium themes (Porcelain, Obsidian, Midnight, Emerald, Sand) in light + dark

• Saved presets + prompt history

• Unlimited generations
Free version includes the full bar, built-in prompt expansion, and 10 generations per day.
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PRIVATE BY DESIGN

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Your settings and API keys are stored locally in your browser (chrome.storage.local) and never touch our servers. Bring your own key — your data stays yours.
Pro is a one-time purchase — $29 lifetime, no subscription.
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Questions or feedback? [email protected]