Duolingo Style OG Image: Image Skill for Claude Code

White Duolingo share card with the green owl Duo flying at the center between a flaming streak calendar, an ice crystal and a purple feather gem

Runs in

Install guides

Claude Code Cursor

Generates with

Host Agent LLM

Uses tools

FAL

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Off-white share card for Duskleaf with a phone lying at an angle at lower left, a crescent moon sticker and a headline at top right

FREE

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What you get

A single 16:9 WebP with the leaping mascot at center and your brand and headline spelled correctly
The exact prompt it sent plus the saved FAL task file; rerunning resumes that request rather than buying a new one
A review of spelling, the 6% safe margin and the 16:9 frame before the card reaches you

Good fit

Language, kids and habit apps
Streak, milestone and launch posts
Playful brands, with or without a mascot

Not for

Explanations or long passages of text
Dense interfaces, charts or tables
Recreating a real mascot or campaign

Social mediaProduct launchMake an OG imageog imagesocial cardlearningmascotplayful illustration

Good forMake an OG image

About this Skill

You say/ours-duolingo-style-og Share card for Pianobird, a piano practice app for kids. Headline: "Scales every day". Mascot idea: a round little songbird.

Learning and habit apps run on milestones, and this pick among Fable 5 skills for designers turns one into a share card. On a plain white ground, one flat, cheerful cartoon mascot jumps mid-frame, ringed by three or four chunky badges in sweet-shop colors, with tiny pale diamonds of confetti between. Mascot and badges are invented for your product; one request goes to GPT Image 2 on FAL, and every letter is read before the file is yours.

How it works

Agree on the name, one headline and one picture idea; drop anything that blurs at thumbnail size
Lay out the card from references/visual-system.md and fit your colors to its four style anchors
Strip out outside names, marks, faces, screens and slogans, then invent the mascot and its badges for your brand
Write a prompt about visible things only: frame, layout, light, palette, subject and type position
Send one request with the bundled FAL helper and keep the task file it writes
Read each letter, check the 6% margins and the 16:9 frame, and only then run validate-output.mjs
If a flaw remains, propose one prompt change and wait for your OK before a second paid request

Checked before delivery

validate-output.mjs passes with --require-format webp --require-16-9, and the prompt file has no emoji, arrows or symbol characters
Brand and headline read correctly letter by letter, with key text and faces inside a 6% margin on every side
Every source name, logo, slogan, person, interface and watermark is replaced by the user's own identity or a new one, and the layout is new for this subject
Exactly one paid request per approved generation

What you need before you start

You bring: Brand or project name, spelled as it should appear on the card · One short headline · What the page, product or audience is · Optional: brand colors, a logo the user may use, a mood, owned reference images, a platform safe zone
Dependencies: Node.js 20+ to run the included FAL script · Your own FAL API key, set as FAL_KEY; FAL charges for each image
Outside costs: FAL_KEY
Last tested: v0.1.0 — Claude Code / Codex / Cursor

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FAQ

I already have a mascot. Can the card use it?

Yes, if it is yours to use: give it alongside your name, headline, colors and logo, and the layout is rebuilt around them. With no mascot supplied, the agent invents one; it never borrows another brand's character.

Can it work from an image I already have?

If the image is yours or you may use it, yes. Hand it over with --reference and GPT Image 2 runs in edit mode instead. Only mood, color and layout are taken from the picture; nothing in it is reproduced on the card.

Is there a cost beyond the Skill?

Yes: FAL bills every image to your own account. The helper never retries by itself, and running the same command again only picks up the saved request, so checking on a slow job never pays for a second one.

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