Skip to content
CrateX.app logo

CrateX.app

Markdown Converter

Markdown Converter

Markdown Converter: Supports bidirectional conversion between Markdown and HTML with real-time preview rendering. Supports GFM extended syntax, code highlighting, KaTeX math formulas, and Mermaid diagrams, suitable for document writing, blog publishing, and email rich text generation

Input

Output

Converted result will appear here…
Markdown Converter

Quick Start

1
Paste content into the left input box
2
Select conversion mode (→HTML or →Markdown)
3
Content converts automatically, result shows on the right
4
Preview/HTML output: Markdown → HTML renders KaTeX/Mermaid by default

Common Scenarios

Blog/Docs preview

quickly check Markdown rendering and colors

Email delivery

paste exported HTML into the email body (prefer inline styles)

Rich text → Markdown

clean webpage/CMS rich text into version‑controlled Markdown

Tech docs

render formulas/diagrams and export in one step

Editor migration

reconcile differences across Markdown flavors

Wiki/Knowledge base

convert HTML pages to Markdown for import

API changelog

turn HTML/descriptions into Markdown for review/PR

Extended workflow

convert markdown to html, markdown html converter, and markdown editor can be handled in the same review flow, so you can verify results before copying or exporting.

Conversion Parameters & Rendering

Markdown → HTML renders KaTeX/Mermaid automatically
HTML → Markdown keeps/restores source; no re‑render
GFM (tables/tasks) is enabled by default; use standard Markdown for strict behavior
Soft line breaks are enabled; for strict behavior use blank lines or two trailing spaces
Very large inputs may trigger degraded preview (limit rendering/disable highlighting)

Usage Advice

Email: prefer inline styles for better compatibility
Long documents: convert in parts to avoid lag

Limitations & Compatibility

Flavors differ: rendering varies across platforms; prefer common syntax
HTML → Markdown is best‑effort: styles/layout are often lost
HTML → Markdown ignores parts of HTML (scripts/styles/meta, embeds/forms, media, on* events, style/class, etc.)
Complex tables/nesting may degrade; please review
Images/video remain external links; not downloaded
Third‑party pre‑rendered Mermaid SVG cannot be reliably reversed

Session Controls

You can replace, clear, and re-run the current content at any time before exporting the final result.
Doesn’t run <script> from pasted HTML
KaTeX/Mermaid render with safe configuration
Doesn’t auto‑sanitize all HTML; please review before/after conversion

FAQ

6

Continue with these related tools for the next step.