PDF to PNG — OpenClaw Plugin

Convert PDF pages to PNG, JPG, or WebP images using the PDFAPIHub API. This OpenClaw plugin renders PDF pages as images with full control over DPI, dimensions, and format — plus quick presets for thumbnails and social media previews.

What It Does

Render any PDF page as an image — perfect for thumbnails, social previews, print-ready exports, and document previews without embedding a PDF viewer.

Features

PNG/JPG/WebP Output — Choose the best format for your use case
Configurable DPI — 72 (fast) to 300 (print quality)
Page Selection — Convert specific pages or ranges (e.g. 1-5, 1,3,5)
Resize — Set custom width/height for thumbnails or social media
Background Color — Fill transparent PDF backgrounds with any hex color
Thumbnail Preset — One-command first-page thumbnail at 200px
OG Image Preset — One-command 1200x630 social media preview
Image to PDF — Reverse: combine images into a PDF with page layout
Page Size Control — A4, Letter, original for image-to-PDF
Fit Modes — fit, fill, stretch, original for image-to-PDF layout

Tools

Tool	Description
`pdf_to_png`	Convert PDF pages to PNG/JPG/WebP with full control
`pdf_thumbnail`	Quick first-page thumbnail (200px width)
`pdf_to_og_image`	1200x630 social media preview from first page
`images_to_pdf`	Combine images into a PDF with page layout
`pdf_info`	Check page count before converting

Installation

openclaw plugins install clawhub:pdf-to-png

Configuration

Add your API key in ~/.openclaw/openclaw.json:

{
  "plugins": {
    "entries": {
      "pdf-to-png": {
        "enabled": true,
        "env": {
          "PDFAPIHUB_API_KEY": "your-api-key-here"
        }
      }
    }
  }
}

Get your free API key at https://pdfapihub.com.

Usage Examples

Just ask your OpenClaw agent:

"Convert this PDF to PNG images"
"Render pages 1-5 at 300 DPI as JPGs"
"Generate a thumbnail of this PDF"
"Create an OG image from this PDF for social media"
"Combine these scanned images into one PDF"

Use Cases

Document Thumbnails — Preview images for file managers and document lists
Social Media Previews — OG images for link sharing on Twitter/Facebook/LinkedIn
Print-Ready Exports — High-DPI renders for print workflows
E-commerce — Convert product PDF spec sheets into gallery images
Slide Extraction — Pull individual slides from PDF presentations as images
Document Previews — Show PDF content without embedding a PDF viewer
Scanned Document Assembly — Combine scanned page images into one PDF

Limits

Max 100 pages per request
DPI range: 72–300
Max resize dimension: 10000 px
Max 100 images for image-to-PDF

API Documentation

Full API docs: https://pdfapihub.com/docs

License

MIT

PDF to PNG