Does the MJML to HTML converter work in the browser?

Yes. Paste or import MJML markup and the tool compiles it into responsive HTML directly in your browser, with no desktop install required.

Which email clients does the generated HTML support?

The compiled HTML follows MJML's table-based, inline-styled output, which is built to render consistently across major clients including Gmail, Outlook, and Apple Mail.

Can I edit the MJML before converting it?

Yes. Imported MJML templates can be customized, and custom components, layouts, and sections can be added before conversion.

Tool Documentation

MJML to HTML Converter

Compile MJML markup into clean, table-based, email-client-ready HTML — in your browser, with no build step. This page documents what the converter does, how to use it, and how it fits into the wider Email Studio toolset.

Open the Converter ↗ Launch Web Email Manager

What It Does

From MJML markup to responsive HTML, instantly

The converter takes structured MJML — sections, columns, text, images, buttons — and compiles it into the inline-styled, table-based HTML that email clients expect.

          input.mjml
          compiled to →
          output.html
        

<mjml>
  <mj-body>
    <mj-section>
      <mj-column>
        <mj-text>Hello, world</mj-text>
        <mj-button href="#">Shop Now</mj-button>
      </mj-column>
    </mj-section>
  </mj-body>
</mjml>

↓ compiles into inline-styled, table-based HTML — Outlook conditionals, MSO fallbacks, and responsive breakpoints included ↓

How To Use It

Four steps from markup to inbox-ready HTML

No account or install needed to run a conversion.

Paste or import

Paste MJML markup directly, or import an existing .mjml file from Email Studio or another editor.

Convert

Run the conversion to compile your markup into responsive, table-based HTML.

Preview

Check the rendered output before it goes anywhere near a send list.

Download or export

Download the compiled HTML, or push it straight to your ESP, CRM, or HubSpot Design Manager.

Why Use This Converter

Built around real MJML editing workflows

Documented advantages carried over from the underlying MJML editor this converter was built alongside.

Full MJML style support

Every style declared in your MJML document is applied faithfully in the compiled HTML output.

Custom components & layouts

Build and convert custom components, custom layouts, and custom sections alongside standard MJML tags.

Easy template editing

Existing MJML templates can be edited before conversion, so tweaks don't require rebuilding from scratch.

Import & customize

Import an MJML template into the workflow and customize it before generating final HTML.

Part of Email Studio

The converter lives inside a bigger MJML toolset

This tool is one piece of Email Studio, a WYSIWYG MJML editor built on top of the MJML framework.

Email Studio pairs the reliable, cross-client HTML that MJML compiles down to with a drag-and-drop visual canvas — so sections, columns, text blocks, and images can be arranged and previewed in real time, without recompiling code to check a padding value.

Because the whole editor is built around MJML, anything designed visually can be exported the same way this converter works: clean MJML in, responsive HTML out.

AI template generator — describe an email and get a starting MJML template generated automatically.
Template library — hundreds of pre-built templates for common campaign types.
Reusable blocks — save headers, footers, or product blocks and reuse them across campaigns.
Import / export MJML — bring in existing MJML files or export your work as MJML at any time.
HubSpot integration — export finished templates directly to HubSpot Design Manager.
Team collaboration — multiple people can edit the same campaign at once.

FAQ

Common questions

Does the converter run entirely in the browser?

Yes — paste or import MJML and it compiles to HTML on the spot, with no desktop install required.

Which email clients does the output support?

The compiled HTML follows MJML's table-based, inline-styled structure, built for consistent rendering across Gmail, Outlook, Apple Mail, and other major clients.

Can I add custom components before converting?

Yes — custom components, layouts, and sections can be built or imported and edited ahead of conversion.

Can this be integrated into another platform?

The underlying tooling is built on MJML, vanilla JS, jQuery, and PHP, and is designed to be integrated into other frameworks and platforms.

Background on the tools behind this converter

Two write-ups from the team on how the MJML editor and Email Studio came together.

Build Notes

MJML EMAIL Drag and Drop Editor — No Code Platform Tool

Read on Medium ↗

Product Announcement

Announcing Email Studio: A Powerful WYSIWYG Editor for MJML