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PDF UA API

HTML to PDF

POST /convert takes a JSON body { "html": "..." } and returns a PDF/A-3a document with PDF/UA accessibility.

Terminal window
curl -X POST http://localhost:8080/convert \
  -H "Content-Type: application/json" \
  -d '{"html":"<html lang=\"en\"><head><title>Doc</title></head><body><h1>Hi</h1></body></html>"}' \
  --output out.pdf

Set a lang attribute and a <title> — both are required for accessible output. Bundled fonts are available by font-family (no system fonts needed), and wide tables paginate automatically.

HTML & CSS support

Section titled “HTML & CSS support”

Rendering uses OpenHTMLToPDF, a static renderer. It supports:

  • CSS 2.1 (the box model, tables, floats) and a subset of CSS3 (colors, backgrounds, borders)
  • @page for page size/margins and page-break-before/after/inside
  • @font-face and the bundled font families
  • Inline SVG and raster images

It does not support:

  • JavaScript (no scripts run)
  • CSS Flexbox or Grid
  • CSS transitions/animations and most modern dynamic layout

Design documents with classic block/table/float layout. See the openhtmltopdf docs for the authoritative feature list.

Try it

Section titled “Try it”

Edit the HTML and click Render PDF. The live render calls the API at PUBLIC_API_URL (default http://localhost:8080); the API must allow this site’s origin via CORS_ALLOWED_ORIGINS.