PDF Merge & Split — OpenClaw Plugin

Merge and split PDF documents using the PDFAPIHub API. This OpenClaw plugin gives your AI agent the ability to combine multiple PDFs, extract specific pages, split documents into parts, and compress the results.

What It Does

Combine multiple PDF files into a single document, split large PDFs into smaller parts, and compress the output — perfect for invoice bundling, report assembly, chapter extraction, and document management.

Features

Merge PDFs — Combine 2-25 PDFs by URL or base64 into a single document
Custom Metadata — Set title, author, subject, and keywords on merged PDFs
Google Drive Support — Share links auto-converted to direct downloads
Split by Pages — Extract specific pages or ranges (e.g. 1-3,5,8-10)
Split Each Page — One PDF per page for batch processing
Split into Chunks — Divide into N roughly equal parts
Open-Ended Ranges — 5- means page 5 to the end
PDF Compression — Reduce file size with low/medium/high/max compression
Compression Stats — Original size, compressed size, ratio, bytes saved
PDF Info — Check page count, file size, encryption, and metadata
Multiple Output Formats — Download URL, base64 string, or raw file

Tools

Tool	Description
`merge_pdfs`	Combine 2-25 PDFs into a single document with optional metadata
`split_pdf`	Split a PDF by page ranges, per-page, or fixed chunks
`pdf_info`	Check page count, encryption, and metadata before processing
`compress_pdf`	Compress merged/split results to reduce file size

Installation

openclaw plugins install clawhub:pdf-merge

Configuration

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

{
  "plugins": {
    "entries": {
      "pdf-merge": {
        "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:

"Merge these three invoices into one PDF"
"Extract pages 1-5 from this report"
"Split this 50-page document into 5 equal parts"
"Split every page into a separate PDF"
"How many pages does this PDF have?"
"Merge these PDFs and compress the result"

Use Cases

Invoice Bundling — Combine monthly invoices into a single PDF for clients
Report Assembly — Merge cover page, table of contents, and chapters
Legal Document Packets — Bundle contracts, appendices, and exhibits
Chapter Extraction — Extract specific chapters from a book PDF
Selective Sharing — Share only relevant pages from a large document
Batch Processing — Split scanned documents into individual page files
Storage Optimization — Compress merged PDFs to reduce file size

Limits

Constraint	Value
Max input files (merge)	25
Max pages per document	200
Max total pages (merge)	500
Max input file size	50 MB
Max chunks (split)	100

API Documentation

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

License

MIT

PDF Merge & Split