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HelpyTools
Convert Inspect & Validate Generate Text & Docs Design & Code
  • Diagram
  • Markdown Preview
  • Markdown Reader
  • PDF Editor
  • Sort Lines
  • Text Stats

© 2026 HelpyTools

Markdown Preview

Write Markdown and preview HTML output in real-time with syntax reference guide.

Markdown
0 chars
Preview

Print / save as PDF

In the print dialog, choose Save as PDF as the destination. The file is named after the first heading, and long code lines wrap instead of being cut off.

Headings

# H1Heading level 1 — largest
## H2Heading level 2
### H3Heading level 3
#### H4Heading level 4
##### H5Heading level 5
###### H6Heading level 6 — smallest

Emphasis & inline formatting

**bold**Bold text
*italic*Italic text
***bold italic***Bold and italic
`code`Inline code
>blockquoteBlockquote
~~strikethrough~~Strikethrough text

Lists

- itemUnordered list item (also * or +)
1. itemOrdered list item
  - nestedNested list — indent with 2 spaces
- [x] doneChecked task list item
- [ ] todoUnchecked task list item

Links & images

[text](url)Inline link
[text](url "title")Link with tooltip title
![alt](url)Image
[ref]: urlReference-style link definition
[text][ref]Reference-style link usage
<https://url>Auto-linked URL

Code blocks

```jsFenced code block with language
```Fenced code block (no language)
    indented4-space indented code block
```mermaidRenders as a diagram, not as code — the fence is what turns it on

Tables, rules & misc

---Horizontal rule (also *** or ___)
\Trailing backslash — forces a line break
| col | col |Table row
| --- | --- |Table separator row (required)
| :-- | --: |Left-align / right-align column
&nbsp;Non-breaking space (HTML entity)

Examples — click to load

Getting started

Headings with #, bold with **, a bullet list, and a blockquote.

Text formatting

All inline styles: **bold**, *italic*, ***both***, ~~strikethrough~~, and backtick `code`.

Lists & tasks

Unordered lists with -, ordered with 1., nested with 2-space indent, and task lists with - [x].

Code blocks

Inline code with backticks, fenced blocks with ```language, and 4-space indented blocks.

Mermaid diagrams

Tag a fenced block mermaid and it renders as a diagram — flowcharts, sequence, class, state, gantt, pie and the rest. Build one in the Diagram Creator.

Tables

Tables need a header row, a separator row with ---, then data rows. Use :---, :---:, ---: for alignment.

Full README

A realistic README combining headings, code blocks, ordered steps, task lists, a rule, a blockquote, and a link.