# Rendlet PDF API > HTML or JSON+template to PDF over one HTTP endpoint. Free plan: 100 documents/month. Paid plans: $7 (1,000 docs), $19 (5,000) and $59 (25,000) per month. Each plan has a hard monthly cap with no overage billing; at the cap the API returns 429 with upgrade_url. Docs last checked 2026-10-18. - POST https://rendlet.com/v1/pdf with header "Authorization: Bearer sandbox" and JSON {"html": "..."} or {"template": "invoice"|"itinerary", "data": {...}}. Add "response":"base64" to get JSON instead of binary. - GET https://rendlet.com/v1/templates returns example payloads. ## Docs - [Full docs (Markdown)](https://rendlet.com/docs.md) - [OpenAPI 3.1](https://rendlet.com/openapi.json) - [Comparison with PDFShift, Api2Pdf, DocRaptor (Markdown)](https://rendlet.com/compare.md)