> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blinkpdf.io/llms.txt
> Use this file to discover all available pages before exploring further.
# Blink PDF: Markdown to PDF API 😘
> Convert Markdown to professional, accessible PDFs via a single REST endpoint. No Chromium; your Markdown input is never persisted.
Blink PDF is a high-performance REST API that converts Markdown into polished, production-ready PDFs without a browser.
Send a `POST` request with your Markdown content, receive a binary PDF in response — no headless browser, no stored data. Whether you're generating invoices, reports, or AI-authored documents, Blink PDF slots into any stack in minutes.
Make your first API call and download a PDF in under five minutes.
Full reference for the `POST /v1/render` endpoint, request body, and response headers.
Pipe OpenAI or Claude output directly into Blink PDF for instant document generation.
From a free tier (250 render units/month) to Pro, Business, and dedicated Enterprise plans.
## Why Blink PDF
Blink PDF uses a purpose-built render engine — there is no Chromium anywhere in the pipeline. That design unlocks a set of properties that browser-based renderers simply cannot offer:
* **Low-latency Markdown rendering.** No browser launch, no page load, no layout thrash.
* **No browser startup overhead.** The render engine avoids spawning Chromium for each document.
* **15 curated themes.** Pick a design preset with one field, then override anything per request. See [Themes](/configuration/themes).
* **Input never persisted.** Your Markdown is processed in memory and never stored; generated PDFs and staged assets are purged within 24 hours. See [Zero Retention](/concepts/zero-retention).
* **Reusable image assets.** Stage images once and reference them anywhere as `blink://asset/` handles — they don't count toward your request size.
* **PDF/UA-1 accessibility.** Every PDF Blink generates is tagged for screen readers and passes accessibility audits out of the box.
* **Full Unicode and color emoji support.** Font subsetting ensures compact file sizes without sacrificing character coverage.
## Make your first API call
Send a `POST` request to `https://api.blinkpdf.io/v1/render` with your Markdown in the request body. The response is a raw PDF binary you can stream directly to your users or save to disk.
```bash theme={null}
curl https://api.blinkpdf.io/v1/render \
--request POST \
--header 'Accept: application/pdf' \
--header 'Content-Type: application/json' \
--header 'x-api-key: bp_xxxxxxxxxxxxxxxxxxxx' \
--data '{
"markdown": "# Invoice 0042\n\nHi Jane, thanks for your business!\n\n## What'\''s included\n\n- **Pro plan** subscription\n- Priority support\n\n**Total: $39** — paid on May 23, 2026.",
"metadata": { "title": "Invoice 0042" }
}' \
--output invoice.pdf
```
The response arrives with `Content-Type: application/pdf` plus render-status and usage headers — `X-Request-Id` (include it when emailing [support@blinkpdf.io](mailto:support@blinkpdf.io)), `X-Render-Status` (`ok` or `degraded`), `X-Render-Rendered-As-Requested`, optional `X-Render-Diagnostics` (base64url-encoded JSON when the renderer raised issues), `X-BlinkPDF-Billing` (whether the render was billed) with `X-BlinkPDF-Usage-Event-Id`, and `X-BlinkPDF-Usage-*` (your render-unit usage against the plan). See the [API reference](/api-reference/overview#response-headers) for the full list.
Ready to get your API key and try it live? Head to the [Quickstart](/quickstart) to be up and running in under five minutes.
## Integrations
Blink PDF works wherever HTTP works. First-class integration guides are available for **OpenAI**, **Claude**, **n8n**, **Make**, **Zapier**, **Notion**, **Obsidian**, and **Tiptap** — so you can add PDF generation to your existing automation or content workflow without writing infrastructure code.