Supported Formats & Pipelines

Source Files

Any supported format

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Unified Tree

Lambda / Mark

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Operations

Transform · Validate · Render

Input Formats

Lightweight Markup Languages

All markup flavors are parsed into the same Mark Doc schema — an element tree rooted at <doc>, with HTML-compatible element names.

Format	Input Type	Notes
CommonMark / GFM Markdown	`markdown`	100% CommonMark pass rate
reStructuredText	`rst`
MediaWiki / DokuWiki	`wiki`
AsciiDoc	`asciidoc`
Emacs Org-mode	`org`
Textile	`textile`
troff / man pages	`man`
MDX (Markdown + JSX)	`mdx`	Inline React/JSX components
HTML5	`html`	100% html5lib pass rate
LaTeX	`latex`

Data Interchange Formats

Format	Input Type	Notes
JSON	`json`	Maps to Lambda maps/arrays
YAML	`yaml`	100% YAML 1.2 pass rate
TOML	`toml`
CSV	`csv`
INI	`ini`
XML	`xml`	Maps to Lambda elements
Mark Notation	`mark`	Native Lambda/Mark format

Other Formats

Format	Input Type	Notes
PDF	`pdf`	Text extraction and structure
RTF	`rtf`
Email (EML)	`eml`	Built-in schema available
Calendar (ICS)	`ics`	Built-in schema available
vCard (VCF)	`vcf`	Built-in schema available
CSS	`css`
Mermaid diagrams	`mermaid`
D2 diagrams	`d2`
GraphViz DOT	`dot`

Output Formats

Conversion Output (`lambda convert -t <format>`)

mark json xml html yaml toml ini css jsx mdx latex rst org wiki textile text markdown properties

Render Output (`lambda render -o <file>`)

SVG PDF PNG JPEG

The Unified Mark Doc Schema

All lightweight markup parsers produce the same element-tree shape, aligned with HTML element names:

Category	Mark Element(s)
Document root	`<doc>`
Metadata	`<meta title: … author: … date: …>`
Headings	`<h1>` … `<h6>`
Paragraph	`<p>`
Block quote	`<blockquote>`
Code block	`<pre><code>`
Lists	`<ul>` / `<ol>` / `<li>`
Tables	`<table>` / `<thead>` / `<tbody>` / `<tr>` / `<th>` / `<td>`
Strong / Emphasis	`<strong>` / `<em>`
Links / Images	`<a href:…>` / `<img src:…>`
Math	`<math mode:'inline'>` / `<math mode:'display'>`
Footnotes	`<footnote id:…>`

How Parsing Works

In Lambda scripts, load any format with input():

let md   = input("readme.md",    'markdown')
let html = input("page.html",    'html')
let json = input("data.json",    'json')
let yaml = input("config.yaml",  'yaml')
let csv  = input("data.csv",     'csv')
let tex  = input("paper.tex",    'latex')
let pdf  = input("report.pdf",   'pdf')

From the CLI, convert directly:

lambda convert input.json -t yaml -o output.yaml
lambda convert doc.md -t html -o doc.html

See Recipes → CLI Convert Reference

One Tree, Many Formats