PromptCanvas — AI Image Prompts for ChatGPT

Turn short ideas into rich, styled image prompts for ChatGPT. Pick a style, ratio & quality — PromptCanvas expands and sends it.

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. ━━━━━━━━━━━━━━━ WHAT IT DOES ━━━━━━━━━━━━━━━ • 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 ━━━━━━━━━━━━━━━ PRO FEATURES ━━━━━━━━━━━━━━━ • 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. ━━━━━━━━━━━━━━━ PRIVATE BY DESIGN ━━━━━━━━━━━━━━━ 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. ━━━━━━━━━━━━━━━ Questions or feedback? aadarshraj380@gmail.com