Generate Image

Generate a PNG image from HTML content or a public URL using headless Chromium. Supports custom dimensions, retina quality, full-page screenshots, cookie con...

Security Scan

The skill is an instruction-only wrapper for a third‑party image-generation HTTP API (pdfapihub.com); its requirements and instructions align with that purpose, but it will send whatever HTML/URL you provide to an external service so you should not submit sensitive content or credentials you don't want shared.

Purpose & Capability

The name/description match an HTTP-based HTML->PNG screenshot service. The skill declares the API endpoint and an API-key header (CLIENT-API-KEY) which is appropriate for this purpose. No unrelated binaries, config paths, or credentials are requested.

Instruction Scope

SKILL.md instructs the agent to POST HTML or a URL to https://pdfapihub.com/api/v1/generateImage with the CLIENT-API-KEY header — this is consistent with the stated purpose. Note: user-supplied HTML, URLs, and dynamic parameters will be transmitted to a third party; the instructions do not attempt to read local files or other system state.

Install Mechanism

There is no install spec and no code files to execute locally (instruction-only). This minimizes local install risk.

Credentials

The skill does not request host environment variables, filesystem paths, or unrelated secrets. Authentication is handled via an API key header for the external service, which is proportional to the task.

Persistence & Privilege

always is false and the skill does not request persistent/privileged system modifications. It is an agent-invocable skill that makes outbound API requests — normal for this category.

Assessment

This skill is a coherent wrapper around a third-party API (pdfapihub.com) and appears to do what it says: POST your HTML or a public URL to that service to receive an image. Before installing or using it, consider: (1) Any HTML, URLs, or dynamic data you send will be transmitted to and processed by pdfapihub.com — do not include passwords, private tokens, or other sensitive data. (2) Obtain and treat the CLIENT-API-KEY like any API secret; check where the agent will store it and revoke it if compromised. (3) Confirm the service’s privacy/retention policy (SKILL.md says files are deleted after 30 days) and any cost or rate-limit implications. (4) If you require full control over sensitive rendering, consider a self-hosted rendering solution (headless Chromium) instead of a third-party API. Otherwise, this skill’s scope and requirements are proportionate and expected.

What It Does

Renders a webpage or HTML content to a PNG image using headless Chromium. Supports URL screenshots and HTML-to-image rendering with full customization.

When to Use

• Take a screenshot of a live webpage
• Render HTML/CSS to a PNG image (social cards, banners, certificates)
• Generate full-page scrollable screenshots
• Create retina-quality images with custom dimensions

Required Inputs

You must provide one of:

• html_content — raw HTML string to render
• url — a public URL to screenshot

Authentication

Send your API key in the CLIENT-API-KEY header.

Get your free API key at https://pdfapihub.com. Full API documentation is available at https://pdfapihub.com/docs.

Use Cases

• Social Media Cards — Generate OG images, Twitter cards, or Instagram story images from HTML templates
• Email Banners — Create personalized email header images with dynamic content
• Website Screenshots — Capture full-page or viewport screenshots of live websites for monitoring or previews
• Certificate Images — Render certificates as PNG images for sharing on social media
• Product Mockups — Generate product images with dynamic text overlays
• Thumbnail Generation — Create consistent thumbnail images for blog posts or video previews
• QR Code Cards — Render HTML with embedded QR codes as shareable images

Key Options

Parameter	Description
output_format	url (default), base64, both, image/png/binary/file
width / height	Output image dimensions in pixels
deviceScaleFactor	1 (default), 2 for retina quality
full_page	true for full scrollable screenshot (URL mode)
wait_until	load, domcontentloaded, networkidle, commit
cookie_accept_text	Auto-click cookie consent before screenshot
font	Google Font names, pipe-separated
dynamic_params	Key-value object for {{placeholder}} replacement

Rate Limits

Tier	Requests/min
Free/Basic/Pro	10
Enterprise	30
Business	100

Example Usage

curl -X POST https://pdfapihub.com/api/v1/generateImage \
  -H "CLIENT-API-KEY: your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "html_content": "<div style=\"padding:40px;background:#4F46E5;color:white;\"><h1>Hello {{name}}</h1></div>",
    "dynamic_params": { "name": "World" },
    "width": 800,
    "height": 400,
    "output_format": "url"
  }'

Notes

• Files are automatically deleted after 30 days
• Maximum output file size depends on your plan tier