HTML to Markdown Converter
Runs bundled Turndown with ATX headings, hyphen bullets and fenced code blocks, then trims only the outer Markdown whitespace. Styling, scripts and browser-rendered state are lossy.
About this html to markdown converter
Runs bundled Turndown with ATX headings, hyphen bullets and fenced code blocks, then trims only the outer Markdown whitespace. Styling, scripts and browser-rendered state are lossy Applies Unicode-compliant text transformations and parsing directly in the browser tab without data leakage.
Text processing & transformation mechanics
Compiles and renders Markdown content in strict conformance with CommonMark 0.31 and GitHub Flavored Markdown (GFM) specifications. The AST parser transforms Markdown syntax trees (headings, emphasis, tables, task lists, blockquotes, fenced code blocks) into semantic HTML5 or plain text. LaTeX mathematical expressions enclosed in $...$ or $$...$$ are parsed into MathML / KaTeX elements, and table alignment markers (:---, :---:, ---:) are mapped to proper HTML column alignments.
Worked text manipulation example
Scenario: A documentation team converts legacy HTML user manuals into clean, modern Markdown files.
Sample input:
Processing: Parses HTML DOM elements, converting headings, emphasis tags, and anchor links into standard Markdown syntax.
Illustrative output:
Character encoding & string length boundaries
Conversion loses styling, DOM behavior, complex tables and browser state. Script element text can remain as plain Markdown, and link destinations such as `javascript:` are not sanitized; check and sanitize exported Markdown before rendering it elsewhere.
Text formatting and transformations in HTML to Markdown Converter preserve character integrity. Check edge cases such as multi-line inputs and special characters before downstream use.
In-memory text processing boundary
String operations and Unicode manipulations in HTML to Markdown Converter execute entirely in local browser memory without transmitting input text.
Unicode Consortium & text formatting standards
Unicode Consortium standard annexes (UAX) and character encoding specifications:
- WHATWG HTML Living Standard (HTML input)
- Turndown implementation-specific Markdown output
HTML to Markdown Converter verification · Audit standards
How to use it
- Paste HTML markup.
- Choose Run locally to convert supported HTML elements with the bundled converter.
- Copy the Markdown output.
Frequently asked questions
How does HTML to Markdown convert markup?+
It passes the text to TurndownService with `headingStyle: "atx"`, `bulletListMarker: "-"`, and `codeBlockStyle: "fenced"`, then removes whitespace at the start and end of the result.
Can you show an input and its result?+
`<h1>CZOA</h1><p><strong>Fast</strong> tools</p>` produces Markdown containing `# CZOA` and `**Fast** tools`.
Does it preserve every HTML feature?+
No. The tool returns Markdown text, not browser execution. For example, a script element's body can remain ordinary text, and Turndown can carry an untrusted link target into a Markdown link. It does not sanitize exported Markdown for a later renderer.
What input control is used?+
Enter HTML in the page’s main text area. A local run writes the converted Markdown to the output field.