Office to PDF API — DOCX, XLSX, PPTX via LibreOffice

Server-side LibreOffice, no Microsoft licence, no client install. DOCX, DOC, XLSX, XLS, PPTX, PPT, ODT, ODS, ODP, RTF, CSV, TXT in – PDF out. Billed per page.

Quick start (curl)

Get a key first – no signup: curl -X POST https://api.bigapi.dev/v1/keys (100 free operations, 7 days).

curl -X POST https://api.bigapi.dev/v1/office/pdf -H 'Authorization: Bearer $KEY' -F 'file=@report.docx' -o report.pdf

Give it to your agent (MCP)

Add BiGapi to Claude Desktop, Cursor or any MCP client – the server fetches its own key on first use:

{
  "mcpServers": {
    "bigapi": { "command": "npx", "args": ["-y", "@bigapi/mcp"] }
  }
}

Then simply ask: “Convert this DOCX to PDF.” – the model calls the office_to_pdf tool.

When your agent needs this

• Convert user-supplied Office files for a model to read (via pdf → images or text)
• Turn agent-filled DOCX templates into final PDFs
• Normalize mixed uploads to one format

Parameters

Pricing

Every response carries X-BigAPI-Cost, X-BigAPI-Balance and X-BigAPI-Free-Ops – your agent can budget on its own; X-BigAPI-Pages reports the page count.

Errors your agent can handle

FAQ