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spoolpdf is a hosted Chromium pipe. You send HTML or a public URL; you get a PDF. You do not operate Gotenberg.

Quickstart

Sign in, create a spool_live_… key, render a first PDF.

POST /v1/render

Full request body, including sandbox, waits, cookies, and inject.

Node and PHP SDKs

Official clients for POST /v1/render.

MCP

ChatGPT, Claude, or Cursor without pasting an API key.

Environments

What you can pass

Exactly one of html or url. Optional Chromium controls:
  • Paper: format (A0–A6, Letter, Legal, Tabloid, Ledger, {width}x{height}, {width}xauto), paper_width / paper_height, landscape, single_page
  • Chrome: margin, header, footer (page number placeholders only)
  • SPA waits: wait_delay, wait_for_selector, wait_for_expression, wait_for_network_idle
  • Page load: extra_http_headers, cookies, auth, raise_for_status, emulate_media, lazy_load_images
  • Inject: css, javascript (inline or public http(s) URL)
  • Output: pages, metadata, sandbox (watermarked, does not increment usage)
See Render PDF and the API overview.