Markdown in, beautifully typeset PDFs out
Serifmark is a cloud rendering engine built for AI agents: one REST API and a remote MCP entry point. Math and flowcharts are rendered server-side into the final PDF, and CJK typesetting is a quality promise, not an afterthought. Documents are delivered via short-lived signed links and never stored long-term.
Render the official sample in one click
No signup, nothing stored, no billing, no quota — judge the typesetting quality in 30 seconds.
Why Serifmark
- Chinese typesetting, promisedNoto Sans SC ships in the runtime image and the CJK font stack is the default — not a fallback you fight with.
- Math & diagrams, done server-sideKaTeX formulas and Mermaid flowcharts are rendered in a single server-side pass, degrading gracefully on timeout so delivery never blocks.
- Agent-nativePoint a remote MCP at us with an API key and your agent gets a render_pdf tool. Zero install.
- Layout, not stylingBuilt-in Templates plus Front-matter brand controls — structured fields, no CSS to write.
- Private by defaultDocuments ship as short-lived signed links and are deleted after expiry, never kept on the platform.
- Free tier20 renders every month, reset monthly, just for signing up.
Get started in three steps
1. Sign up and verify your email (free tier: 20 renders per month).
2. Paste your Markdown on the render page and get a PDF.
3. Create an API key and wire your agent via REST or MCP.