og-images SKILL.md skillA
og-images from karero/croftweaver is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add karero/croftweaver/og-images@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- karero/croftweaver
- Path
skills/og-images/SKILL.md- Versions recorded
- 5
- Latest version
- v1.0.0, committed Jul 9, 2026
- First version recorded
- Jun 20, 2026
- Size
- 6,784 bytes
- Repository stars
- 8
- License
- MIT
Generate branded per-page Open Graph (social share) cards for a website: a 1200×630 JPEG ≤300 KB for every page, rendered by a committed Python+Pillow script and wired so each page sets its own `image=` (with a default fallback) and the test suite proves the card exists at the right size. Use when building or auditing a site's share previews — "OG image", "og:image", "social share image", "share card", "WhatsApp/Slack/LinkedIn preview", "Twitter card image…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# OG images — per-page share cards When a URL is shared (WhatsApp, Slack, iMessage, X, LinkedIn, Discord), the `og:image` is the preview. Get it wrong and the link shares with **no picture** or a badly cropped one — a silent conversion leak. This skill makes every page render a consistent, on-brand **1200×630 JPEG ≤300 KB**, generated by a committed script and enforced by the test gate. ## The three hard rules (messengers enforce them) 1. **1200×630, exactly** (1.91:1). Square images get cropped on X/Teams; off-ratio ones letterbox. The starter's `Base.astro` already emits `og:image:width/height` = 1200×630. 2. **≤300 KB.** WhatsApp silently **drops** previews heavier than ~300 KB — the link then shares with no image at all. Encode JPEG and compress to fit. 3. **Extension matches the bytes.** A PNG renamed `.jpg` trips strict scrapers. Use JPEG for photographic cards, PNG only for flat logo/gradient cards that still come ≤300 KB. ## How it's wired in the Astro starter - **`scripts/generate_og_cards.py`** — the generator. Renders one card per page you list, plus a `default.jpg`. Run it with **`npm run og`**. Idempotent; commit the output. …
Read the whole file at its exact version.
How to install
mdr add karero/croftweaver/og-images@sha256:3db04b919fa705eaThe line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_degbu4ktt3zuwuq6)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jun 20, 2026 and Jul 9, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-07-09 | 85a2747 | 6,784 B | A | view · diff |
| v1.0.0 | 2026-07-09 | fe3a67e | 6,601 B | A | view · diff |
| v1.0.0 | 2026-06-20 | 386c3d6 | 5,843 B | A | view · diff |
| v1.0.0 | 2026-06-20 | df09428 | 5,555 B | A | view · diff |
| v1.0.0 | 2026-06-20 | 1d83cb8 | 5,354 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6784 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
karero/croftweaver · 8 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_degbu4ktt3zuwuq6 GET https://markdownregistry.com/api/v1/resolve?ref=karero/croftweaver/og-images GET https://markdownregistry.com/api/v1/blob/3db04b919fa705ea1db96faf72d20afd597250f6a506f6fda538e689d2d2c383
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.