Typster

Typster is an Elixir wrapper for Typst, providing ergonomic functions for rendering Typst templates to PDF, SVG, and PNG formats. Powered by Rust via NIFs for high performance.

Key Features

Multiple output formats - render to PDF, SVG, or PNG
Variable binding - inject Elixir data into templates with deep nesting support (maps, lists, nested structures)
Package support - use Typst packages from the official registry with automatic download and local caching
PDF metadata - embed title, author, keywords, and more
Fast - Rust-powered NIFs; typical invoice rendering in under 50ms
Fully thread-safe - designed for concurrent use in Phoenix applications, tested with 100 concurrent renders

Example

template = """
= Invoice for #customer_name

*Date:* #invoice_date
*Amount:* \\$#amount
"""

variables = %{
  customer_name: "Acme Corp",
  invoice_date: "2025-10-03",
  amount: 1234.56
}

{:ok, pdf} = Typster.render_pdf(template, variables: variables)