Slack Style OG Imagev0.1.0
Use this Skill to make an OG image.
Launch cards made with Claude Fable 5: a phone leans over a desktop app window on two-shade plum, the screens crowded with white panels, little avatars and pops of bright color.
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Updated Oct 26, 2026
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What you get
- One 16:9 WebP card with a phone over a desktop window on plum, your brand and headline exact
- 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
- Team chat, workplace and collaboration software
- Feature releases shown on both desktop and phone
- Headlines of three to five words
Not for
- Brands without an app or screen
- Long copy or dense charts
- Copying an app screen that exists
About this Skill
When a team tool should be seen on desktop and phone at once, this is the layout. The background is deep plum in two shades. A wide desktop window fills the right, a phone overlaps its left edge, and your logo and name hold the top left, with a short two-line headline if you want one. The screens are designed new for your product, down to believable names, times and labels inside the panels. GPT Image 2 on FAL renders the 16:9 WebP, and each letter is checked.
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 screens, names and labels 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
Will the screens contain readable text?
Small labels, names and times inside the panels are fine and should read as plain, correctly spelled English. The large words are your name and headline only, and the screens are drawn new around your colors.
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.