Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/slogsdon/skills-designnpx agentmods add skills/slogsdon/skills-design/screenshot-htmlWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/slogsdon/skills-design/screenshot-html)<a href="https://agentmods.dev/skills/slogsdon/skills-design/screenshot-html"><img src="https://agentmods.dev/badge/skills/slogsdon/skills-design/screenshot-html/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/slogsdon/skills-design/screenshot-html"><img src="https://agentmods.dev/badge/skills/slogsdon/skills-design/screenshot-html.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00075 | $0.02254 |
| Opus 5 | $0.00037 | $0.01127 |
| Sonnet 5 | $0.00015 | $0.00451 |
| Haiku 4.5 | $0.00007 | $0.00225 |
Grade A, and why
screenshot-html scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 134 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Skill: screenshot-html
Targeted artifact-node screenshots via headless Chromium. Skips browser chrome and page background — captures just the design canvas.
When to use
- After running any
design-*skill that produces artifact HTML (LinkedIn post, Instagram card, YouTube thumbnail, Twitter card, blog hero, podcast cover, quote card, carousel, business card, speaker bio, Twitch panels, OBS scene pack, stream overlay, newsletter header, OG/hero pair, talk slides, etc.) and you want PNG exports of each artifact. - When you need a clean image asset to attach to a post, deck, or PR — without the surrounding page padding the artifact HTML uses for preview backdrop.
Skip if:
- The HTML is a deliverable page (e.g.
design-landing-page,design-link-in-bio) — the page IS the artifact, not a.canvasinside it. Use--full-pagefor those. - The user wants browser-rendered review (open in a browser instead).
What it targets
The script queries for these conventions used by design-* skills:
.canvas— the primary fixed-size artifact wrapper (most skills).[class*="canvas-"]— modifier variants:canvas-front/canvas-back(business card),canvas-main/canvas-compact(speaker bio),canvas-full/canvas-safe(YouTube channel art),canvas-og/canvas-hero(blog hero),canvas-square/canvas-story(quote card),canvas-offline(Twitch offline banner),canvas-panel(Twitch info panels)..scene— hash-routed scenes inside stream-overlay and OBS scene-pack files (<section id="scene-starting" class="scene">etc.). The script navigates each scene's hash before capture so the.is-activetoggle applies.
Nested matches are deduped — only top-level artifact containers are screenshotted.
If a file has no matches, the script falls back to a full-page screenshot. --full-page forces fallback for every file.
How to run
From the project root where the design HTML lives (Playwright must resolve there):
node skills/screenshot-html/scripts/screenshot-html.mjs <dir> [--output <dir>] [--width <px>] [--height <px>] [--full-page]
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 134 lines · 75 tokens per session scan A 088b50351160
screenshot-html is a skill published in the GitHub repository slogsdon/skills-design (3 stars, last pushed 25d ago), licensed MIT. It adds 75 tokens to every session and 2,254 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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