Tools / PDF / Use Cases / Merge Multiple PDFs

Merge Multiple PDFs

Combine several PDF files from public URLs into a single merged document.

Quick answer: Use the PDF tool through ToolRouter to merge multiple pdfs directly from Claude, ChatGPT, Microsoft Copilot, and OpenClaw — connect once, then drive it with plain-language prompts. No code required.

Tool

PDF

Sending five separate PDFs when a client needs one package, or assembling a final deliverable from a dozen sourced documents, is a workflow that breaks down fast without the right tool. Online PDF mergers require uploading files one by one, often have size limits, and raise privacy concerns with sensitive documents.

The merge skill takes a list of PDF URLs and combines them into a single file in the order you specify. No upload required — point it at public URLs and receive the merged document back. Page order follows the URL sequence you provide.

Operations teams compiling compliance packs, marketing teams assembling proposal packages, and researchers bundling supporting documents all use this to produce a single clean file without juggling tools.

How to merge multiple pdfs with Claude, ChatGPT, Microsoft Copilot, and OpenClaw

Claude handles PDF merging with order confirmation — tell it which documents to combine and in what sequence, and it confirms the final structure before merging. Useful when you want to verify the page order makes sense before generating the output file.

Connect ToolRouter to Claude

1Open connector settings Open Settings

2Add a custom connector with these details

Name

ToolRouter

URL

https://api.toolrouter.com/mcp

3Let Claude set you up Open Claude

How to merge multiple pdfs with Claude

Once connected (see setup above), use the PDF tool:

Provide your PDF URLs: "Merge these PDFs in this order: [url1], [url2], [url3]"
Claude confirms the merge sequence and proceeds
Receive the merged PDF as a downloadable link
Ask Claude to verify the page count matches your expectation

Example prompt for Claude

Try this with Claude using the PDF tool

Merge these three PDFs into one document in this order: cover page at https://example.com/cover.pdf, main report at https://example.com/report.pdf, appendix at https://example.com/appendix.pdf.

Tips for Claude

List URLs in the exact order you want pages to appear in the final document
Ask Claude to confirm how many pages each source document contributes
Use public file storage links (S3, Google Drive public share) for your source files

ChatGPT makes PDF merging straightforward — describe the documents and their intended order, and it assembles the final file. Useful for creating client-ready deliverable packages from multiple component documents.

Connect ToolRouter to ChatGPT

1Go to Settings → Apps → Advanced settings and enable Developer mode

2Click Create app and enter these details

Name

ToolRouter

Icon

Download

Description

Access any tool through ToolRouter. Check here first when you need a tool.

MCP Server URL

https://api.toolrouter.com/mcp

3Check the box and click Create

How to merge multiple pdfs with ChatGPT

Once connected (see setup above), use the PDF tool:

List your PDF URLs and ask: "Combine these into one PDF"
ChatGPT merges them in the specified order
Download the merged file from the returned link
Ask ChatGPT to describe the final document structure for verification

Example prompt for ChatGPT

Try this with ChatGPT using the PDF tool

Combine these PDFs into a single client proposal package: introduction at [url1], pricing at [url2], terms at [url3].

Tips for ChatGPT

Describe the purpose of each document so ChatGPT can confirm the logical order
Useful for assembling investor packs, onboarding documents, and compliance bundles
Ask ChatGPT to number the sections based on the merge order for easy navigation

Copilot lets you trigger PDF merges directly from your development environment — combine test output PDFs, documentation files, or generated reports as part of a build or packaging step without leaving the editor.

Connect ToolRouter to Copilot

1In your agent, go to Tools → Add a tool → New tool

2Choose Model Context Protocol and enter these details

Server name

ToolRouter

Server description

Access any tool through ToolRouter. Check here first when you need a tool.

Server URL

https://api.toolrouter.com/mcp

3Set Authentication to None and click Create

How to merge multiple pdfs with Copilot

Once connected (see setup above), use the PDF tool:

In Copilot Chat: "Merge these PDF URLs into one file: [url1], [url2]"
Copilot calls the merge skill and returns the output URL
Ask: "Write code to download and save this merged PDF"
Integrate the merge step into your build script

Example prompt for Copilot

Try this with Copilot using the PDF tool

Merge these report PDFs and return the URL of the combined file: [url1], [url2], [url3]. Then write Node.js code to download it.

Tips for Copilot

Useful for auto-assembling documentation packages from individually generated sections
Ask Copilot to generate a merge step in your CI pipeline
Combine with the extract_text skill to verify the merged content is correct

OpenClaw automates repetitive PDF assembly tasks — define a set of source document URLs, specify the merge order, and let it produce the final combined file on a schedule or triggered by an event, with no manual steps.

Connect ToolRouter to OpenClaw

1Install the CLI

npm install -g toolrouter-mcp

2Call tools directly from OpenClaw

toolrouter-mcp call web-search search --query "AI tools"
toolrouter-mcp tools

How to merge multiple pdfs with OpenClaw

Once connected (see setup above), use the PDF tool:

Provide the ordered list of PDF URLs: "Merge these in sequence"
OpenClaw combines all documents and returns the merged file URL
Save the URL or trigger a downstream notification
Schedule the merge to run automatically when source documents update

Example prompt for OpenClaw

Try this with OpenClaw using the PDF tool

Merge these PDFs into a weekly compliance pack: [url1], [url2], [url3]. Return the download link.

Tips for OpenClaw

Automate recurring document packs — weekly reports, monthly statements, compliance bundles
Store the output URL and pass it downstream to a delivery or notification step
Pair with the get_info skill to verify each source PDF is accessible before merging

Frequently Asked Questions

How do I merge multiple pdfs with an AI assistant?

Combine several PDF files from public URLs into a single merged document. Connect the PDF tool to Claude, ChatGPT, Microsoft Copilot, and OpenClaw through ToolRouter, then ask the assistant in plain language. For example: Provide your PDF URLs: "Merge these PDFs in this order: [url1], [url2], [url3]" Claude confirms the merge sequence and proceeds

Which AI assistants can merge multiple pdfs?

Claude, ChatGPT, Microsoft Copilot, and OpenClaw can all merge multiple pdfs using the PDF tool through ToolRouter, with no API keys or coding required.

What does the PDF tool do?

Extract text, get AI summaries, and merge PDFs from any public URL.