Free tool

Merge PDFs into one file

Pick two or more PDFs — they're combined in order, in seconds. No watermarks.

Do this from code or an AI agent

The same engine powers the API: this operation plus scrape, watermark, HTML→PDF and more, over HTTP or MCP. Free tier of 500 units a month, no card.

curl https://api.preteworks.com/v1/pdf/merge \\
  -H "Authorization: Bearer YOUR_API_KEY" \\
  -F files=@a.pdf -F files=@b.pdf -o merged.pdf