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ON AIR2026formatex.io

FORMATEX

LaTeX-to-PDF as a service

VISIT LIVE ↗BUILD SOMETHING SIMILAR →
formatex.ioPGM
EDITOR1 / 7
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// THE PROBLEM & THE PRODUCT

Overleaf has 12 million users and no public API — FormaTeX is the answer. A modern browser editor with real-time collaboration, a production REST API across four LaTeX engines, and Smart Compile that silently fixes AI-generated LaTeX errors before they ever reach the user. Ships with SDKs for five platforms, an MCP server so any AI agent can compile documents directly, and a free tier. No TeX Live, no setup.

// WHAT I BUILT
  • Browser editor with split-pane PDF preview — CodeMirror 6, multi-file projects, no install
  • Smart Compile — auto-detects engine from preamble, auto-fixes LLM-generated LaTeX before failing
  • AI assistant — Fix, Explain, Generate, and Chat with full project file context
  • Real-time collaboration — presence indicators, editor/viewer roles, WebSocket-powered
  • Production REST API — four engines, sync/stream/async compilation modes, full OpenAPI docs
  • LaTeX templates with variable substitution — send JSON, receive a typeset PDF
  • Webhooks with HMAC signing — event delivery with automatic retry backoff
  • MCP server — compile LaTeX directly from Claude Code, Cursor, or Windsurf
  • SDKs for Python, TypeScript, GitHub Actions, Zapier, and n8n
  • DOCX export — convert LaTeX to Word format via Pandoc