mdgate converters

MHTML to Markdown in your browser.

Convert MHTML files to GitHub-Flavored Markdown directly in your browser.

Your MHTML stays on your device. No upload. No account.

Starting local converter

Use MHTML to Markdown in your app

$ npm install @mdgate/html 

import { toMarkdown } from '@mdgate/html';

const markdown = await toMarkdown(bytes);

Pure TypeScript, Node.js, Cloudflare Workers, Edge, Browser, No Python, No native addons, No WASM, Zero third-party runtime dependencies

How MHTML to Markdown works

  1. MHTML
  2. HTML tree parsing
  3. headings · lists · tables · links
  4. GitHub-Flavored Markdown

Built for JavaScript runtimes

Node.js

Read local files, uploads, S3/R2 objects, and other byte sources.

Cloudflare Workers

Parse HTML directly inside Workers without a browser engine or native binary.

Browser

Convert MHTML locally without uploading it to a server.

Edge

Run the same TypeScript converter in compatible Edge runtimes.

What @mdgate/html extracts

  • Headings, paragraphs, and block quotes
  • Bold, italic, strikethrough, and inline code
  • Links and relative URLs
  • Ordered, unordered, and nested lists
  • Tables, including spanning cells
  • Code blocks
  • MHTML / MHT archives
  • XHTML

Why @mdgate/html

Runs where your JavaScript runs

No separate processing service. The converter is TypeScript you can call from Node.js, Cloudflare Workers, Edge runtimes, and browsers.

Local conversion

MHTML files can stay inside your application or browser.

Content detection

Recognizes MHTML files from their contents, not only the filename.

Deterministic parsing

The same MHTML file produces repeatable Markdown without model inference.

Small runtime surface

No Python. No native addons. No WASM. No third-party runtime dependencies.

MHTML for AI agents

Turn MHTML files into content your agent can actually work with.

  1. MHTML
  2. Markdown
    • grep
    • search
    • chunk
    • index
    • cache
    • cite
    • reason

Need more than MHTML?

One format

@mdgate/html

Your own set

@mdgate/core
+ @mdgate/html
+ @mdgate/pdf
+ @mdgate/docx

Broad file support

@mdgate/converters

FAQ

Can I convert MHTML to Markdown without uploading it?

Yes. MHTML files can be converted locally in the browser.

Does MHTML to Markdown work in Cloudflare Workers?

Yes. @mdgate/html runs directly in Cloudflare Workers.

Does it require Python?

No.

Does it require native addons or WASM?

No.

What does it output?

GitHub-Flavored Markdown.

Can I install only the MHTML converter?

Yes. Install @mdgate/html instead of the complete converter set.