Does it support GitHub-flavored Markdown extensions like tables and task lists?

Yes, common Markdown extensions beyond the base spec, including tables and task lists, are supported.

When converting HTML back to Markdown, does it handle complex nested formatting?

Standard formatting (headings, lists, links, emphasis) converts cleanly — very complex or non-standard HTML structures may need some manual cleanup after conversion.

Will code blocks be preserved correctly in both directions?

Yes, code blocks and inline code are preserved with their formatting intact when converting either direction.

Does Markdown ↔ HTML Converter upload my files to a server?

No. Markdown ↔ HTML Converter runs entirely in your browser using on-device processing, your files never leave your device.

Markdown ↔ HTML Converter

Convert Markdown to HTML, or HTML back to Markdown.

Runs in your browser

Input

About this tool

Markdown is fast to write but not directly usable as web content, while HTML is what actually renders in a browser — converting between the two is a routine need whether you're publishing Markdown content or want to edit HTML content in a simpler format. This tool converts Markdown to HTML, or HTML back to Markdown, handling both directions of that conversion.

Frequently asked questions

Markdown Previewer

Write Markdown and preview the rendered output side by side.

HTML ↔ Text Converter

Convert HTML to plain text, or plain text to simple HTML.

File Converter

Convert data files between CSV, JSON and TSV.

Hot

JSON Formatter

Format, validate and minify JSON.

Base64 Converter

Encode or decode text and files as Base64.

Base32 Encoder/Decoder

Encode or decode text as Base32.

ULID Generator

Generate sortable, timestamp-based ULIDs.

Semver Parser/Comparator

Parse and compare two semantic version numbers.

.env File Parser/Validator

Parse a .env file and flag duplicate keys, missing values and invalid names.

Markdown Table Generator

Build a Markdown table with a spreadsheet-style editor.

CSS Grid Generator

Visually build a CSS Grid layout and copy the code.

CSS Flexbox Generator

Visually build a CSS Flexbox layout and copy the code.

PDF Tools

Merge, split, compress and convert PDF files.

Image Tools

Compress, resize, crop and convert images.

Link & QR Tools

Shorten links and generate QR codes and barcodes.

Audio Tools

Convert audio files and turn text into speech, or speech into text.

Video Tools

Compress and process video files, right in your browser.

SEO & Web Tools

Meta tags, sitemaps, schema markup and other on-page SEO utilities.

Data & Spreadsheet Tools

Clean, convert and inspect CSV, TSV and tabular data.

File Tools

Archive, inspect and convert files, right in your browser.

Business Tools

Invoices, quotations, receipts and other business documents.

Social Media Tools

Resize images for social platforms, count hashtags and preview posts.