Geno is an AI image to prompt generator that reverse-engineers any reference image into a structured, editable image prompt — as full text, assembled, or JSON. So you match the style on the first try, not the 31st. Then generate images from it, crop to every social post and ad creative size, and keep the whole library tagged and searchable.
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One workspace for the whole process — image analysis, image generation, editing, ad and social creatives, and the library that keeps them.
Reference · Cinematic
Generated from prompt
Reference · Product
Generated from prompt
Reference · Fashion
Generated from promptOne decode. First-try match. No prompt guessing.
Original
SwapThen swap one attribute — same light, new wardrobe.
Drop in any image. Get a structured breakdown — subject, lighting, composition, palette, medium, mood — not a wall of text.
Toggle attributes like building blocks. Keep the lighting, swap the subject. Export as full text, assembled, or JSON.
Generate images from that prompt on nine models, or edit an existing shot by feeding it back in as a reference. Pick the right model per job.
Crop to every social post format — Instagram, TikTok, YouTube, LinkedIn — and every Google Ads and IAB ad creative size, in seconds. Tag, favourite and find everything again next month.
All plans start with free trial credits — sign in with Google, no card.
Every plan includes all models — Nano Banana Pro, GPT-5 Image & more.
Image counts shown are for Nano Banana 2.
Try it first — free trial credits, no card.
Top up anytime; annual plans get two months free.
It reads a picture and writes the prompt that would recreate it — naming the subject, lighting, composition, palette, medium and mood instead of leaving you to guess at adjectives. Geno goes further than a one-shot description: every attribute comes back as a separate field you can toggle, edit and reuse, and you can export the result as full text, an assembled prompt, or JSON.
A JSON prompt is the same instruction as a written one, with the parts named. Instead of a paragraph where subject, lighting, lens and palette are tangled into prose, each is its own field. That matters the moment you need a second image to match the first, because you can hold every field constant and change exactly one. Geno returns a JSON prompt from any reference image, alongside the plain-text and assembled forms — one analysis, three presentations, and nothing is regenerated when you switch between them.
Because turning an image into a prompt is one step out of five, and it is the only step those tools do — they hand you a caption and stop. Geno decodes the image into named, editable attributes, gives you the prompt as text, assembled or JSON, generates from it on nine models, crops the result to every social and ad size, and keeps the library tagged and searchable. Generation runs on paid models and every image is stored for you; that is what the subscription pays for. The free trial exists so you can prove the whole chain works on your own style before paying for any of it.
Your images and prompts live in your own private, per-user storage. Nobody else — including admins — can read your work.
Each plan includes a monthly pool of credits that every image generation and analysis draws from. Run out and you can top up anytime; plan credits reset each month, top-ups never expire. Start with free trial credits, no card required.