What is an API Key? How to Use DocMake's API

An API key is a password for your code. It lets your app use DocMake's document processing tools — convert, merge, summarize, and more — without opening a browser.

What is an API?

API stands for Application Programming Interface. It's a way for two apps to talk to each other. When you use DocMake in your browser, the browser is the "client" and DocMake is the "server." An API lets your own code be the client instead.

What is an API Key?

An API key is a unique code that identifies you. It's like a password, but for your code instead of a login form. Every request your code sends includes this key so DocMake knows who's asking.

How to Get a DocMake API Key

1. Sign up at docmake.online
2. Go to API Keys in your account
3. Click Generate Key
4. Copy the key — it's shown only once

How to Use It

Here's how to convert a PDF to Word using the API:

curl -X POST https://docmake.online/api/convert \
  -H "X-API-Key: your_api_key_here" \
  -F "file=@document.pdf" \
  -F "target_format=docx"

The API returns a download URL for your converted file.

What You Can Do

• Convert between formats (PDF, Word, Excel, images)
• Combine multiple files into one
• Compress files to reduce size
• Add watermarks and passwords
• Summarize documents with AI
• Analyze data with AI
• Generate documents from scratch

Limits

• Free — 10 API calls per day
• Pro — 500 API calls per day
• API keys can expire after 1 day, 7 days, 30 days, 90 days, or never

MCP Support

DocMake also supports MCP (Model Context Protocol) — connect your AI assistant directly. Works with Claude Desktop, Cursor, and VS Code.

Read the API Docs