Generate
ad creatives
in seconds.
Describe your idea. Prism uses Google Gemini to generate the background, write the copy, and place the text — giving you a pixel-perfect creative you can customize and export.
What Prism does
Everything you need to
ship creatives faster
Six tightly integrated capabilities — from AI ideation to pixel-perfect export — in a single browser tab.
AI Layout Generation
Describe your campaign idea in plain language. Gemini 2.0 Flash analyzes your prompt and produces a structured layout: background scene concept, headline, subheadline, and CTA copy — all tailored to your chosen canvas format.
Photorealistic Background Generation
Gemini's image model renders a clean, text-free background at the correct aspect ratio. Whether you need a mountain vista, a sleek product shot, or an abstract gradient — you get a production-ready image, not a stock photo placeholder.
Drag-and-Drop Text Composer
Every text element lives on its own Konva.js canvas layer. Drag to reposition, use the transform handles to resize, and dial in font family, size, weight, color, alignment, shadow, and opacity — without touching any code.
AI-Integrated Poster Mode
Prefer typography that feels like part of the art? Switch to AI-Integrated mode: the model generates a full poster with text naturally embedded in the scene. Gemini Vision then detects every text zone so you can fine-tune placement and style as editable layers on top.
Inpainting & Text Removal
When the AI bakes typography into an image but you want a cleaner base, Prism can re-generate the image instructing the model to remove the detected text — producing a clean background canvas ready for your own layered text.
Client-Side PNG Export
Export merges the background image and all text layers into a single flat PNG directly in the browser — no round-trip to the server, no file size limits, no data retained. Click export, get your file.
Simple by design
From blank to export
in three steps
Choose your format
Select the canvas that matches your placement: Instagram Post (1080×1080), Instagram Story (1080×1920), or Landscape Ad (1920×1080). Prism applies the correct aspect ratio to every generation call automatically.
Describe your creative
Type a prompt like "luxury watch brand, midnight blue background, stars, premium feel". Prism asks Gemini to write the copy and the background scene description, then renders the image — all in one click.
Customize and export
Drag text layers to the perfect position. Adjust the font, size, color, and weight. When you're happy, hit Export PNG — the final file downloads directly to your device at full resolution.
Two creative approaches
Pick the mode that fits
your workflow
Both modes use the same Gemini backbone. The difference is how much control you want at the typography stage.
Layered Composer
The background is generated text-free. Your copy is placed as independent, fully editable canvas layers that you control completely.
- Clean, text-free AI background at full resolution
- AI-suggested copy pre-loaded as draggable layers
- Pixel-perfect control over every character's position and style
- Ideal when your brand has strict typography guidelines
- Works best with photography-style and abstract backgrounds
Brand-consistent ads, product launches, campaign creatives where typography needs to match existing brand identity.
AI-Integrated
Gemini generates the entire poster — background and typography — as a single cohesive image. Vision AI then extracts the text zones so you can still tweak them.
- Full poster rendered in a single generation pass
- Typography is baked into the image as artistic design
- Gemini Vision detects and maps every text element automatically
- Detected zones become editable overlay layers for fine-tuning
- Inpainting removes baked text if you prefer clean separation
Posters, editorial content, artistic social creatives where the typographic treatment is itself a visual statement.
Platform-ready dimensions
Every format,
perfectly sized
Instagram Post
1080 × 1080 px
Square format — the gold standard for feed posts. High visual impact, equal weight in both portrait and landscape feeds.
Instagram Story
1080 × 1920 px
Full-screen vertical format that takes over the entire display. Maximum immersion, perfect for limited-time offers and announcements.
Landscape Ad
1920 × 1080 px
Cinema-wide format built for YouTube pre-rolls, LinkedIn feed ads, Google Display, and desktop banner placements.
Under the hood
Built on
best-in-class AI
Prism uses Google Gemini models at every stage of the creative pipeline — choosing the right model for each task to balance speed, quality, and cost.
gemini-2.0-flash
Layout planning, copy generation, text zone detection via Vision. Fast, cheap, and razor-sharp at structured reasoning.
gemini-3.1-flash-image-preview
Background and full-poster image generation. Native multi-modal output delivers high-fidelity images from text prompts.
Konva.js · Intervention Image
HTML5 canvas layer compositing for text, transforms, and export. PHP-side image resizing ensures pixel-perfect dimensions.
Your API Key, Your Data
Prism uses your own Google Gemini API key — stored for the session only and never persisted to a database. All generation calls go directly from the server to Gemini using your key.
HOW TO GET A GEMINI KEY
Create a free API key at aistudio.google.com. The free tier includes generous image generation quota — enough for dozens of creative sessions per day.
Common questions
FAQ
Ready to create your
first AI creative?
Grab a free Gemini API key, open Prism Studio, and go from prompt to export in under a minute.
FREE TO USE · BRING YOUR OWN API KEY · NO ACCOUNT REQUIRED