The Markdown Document Generator builds a complete sample Markdown document that touches every common element in one go. It is the fastest way to smoke-test a Markdown renderer, an editor preview pane, or a static-site pipeline, because a single document reveals which features parse correctly and which do not.
How it works
Each generated document assembles a predictable structure from randomised filler text. It always includes:
- A top-level heading and several second- and third-level headings.
- Paragraphs with bold, italic, and inline code spans, plus inline links.
- An unordered list with a nested sub-item and a separate ordered list.
- A three-column table with header and divider rows.
- A fenced code block tagged as TypeScript.
- A blockquote, an image, and a horizontal rule.
The filler sentences are drawn at random from a small bank, so pressing Generate gives you fresh prose while keeping the same full coverage of elements.
Coverage checklist
The document is designed so a developer can run through this mental checklist in under a minute:
| Element | What to look for |
|---|---|
| H1 / H2 / H3 headings | Correct size hierarchy, no runaway styles |
| Bold and italic | Correctly rendered inside a paragraph |
| Inline code | Monospace font, distinct background |
| Unordered list + nesting | Sub-item indented one level, bullet style correct |
| Ordered list | Numbered correctly, not misnumbered from 1/1/1 |
| Table | Aligned columns, visible divider row |
| Fenced code block | Language label, syntax highlighting if supported |
| Blockquote | Left bar or indentation, no raw > character leaking |
| Image | Loads from placeholder service, alt text visible if broken |
| Horizontal rule | Renders as a visual divider, not as three dashes |
Why these elements break most often
Tables and fenced code blocks are the two elements most likely to be parsed incorrectly by custom or stripped-down renderers. The table must have a header row, a separator row with at least three dashes per cell, and then data rows — renderers that expect --- without the column count often fail silently and emit plain text. Fenced code blocks are often affected by surrounding whitespace or the absence of a language label; this document always includes the label to test both paths.
Nested lists are another common failure point. Some renderers require exactly two or four spaces of indentation for sub-items and reject others. Running this document through a new renderer immediately surfaces those gaps.
Tips and notes
- Paste the output into your renderer and check the table, nested list, and code fence first — these are the elements most renderers get wrong.
- The image uses a placeholder service, so a working preview will actually display it; a broken preview shows alt text only.
- Because the structure is stable across different seeds, you can diff the rendered HTML across renderer versions to catch regressions — only the filler text changes, not the element layout.
- Everything runs locally with no API key required; the only network call is the placeholder image request when a preview loads it.