HTML Email Formatter
Paste compressed or messy email HTML and get clean, readable, properly indented code — without changing a single attribute, inline style or table.
Runs entirely in your browser — nothing is uploaded.
Formatting improves readability only — it does not reduce email size. Run the result through the minifier before sending.
Readable email HTML, without rewriting it
A beautifier is a review tool: it makes structure obvious so you can spot an unclosed cell, a stray width or a duplicated block before it reaches an inbox.
How to use this tool
Paste your HTML, pick an indentation style and press Format HTML. Copy the result back into your template or download it as a file for version control.
Why email HTML needs care
Email templates are deeply nested tables with long inline style attributes. Generic web formatters often reflow or rewrite that markup; this one only adds whitespace between tags.
What is preserved
Inline styles, attribute order and quoting, table layouts, media queries inside <style>, Outlook conditional comments and merge tags such as {{First Name}} all survive untouched.
Practical use cases
Clean a template exported from a builder, diff two versions of a campaign, hand a readable file to a developer, or make a vendor template maintainable.
Important limitations
- The formatter does not fix broken or unbalanced markup — it formats what you give it.
- Whitespace inside
<pre>,<style>and scripts is left alone. - Whitespace-sensitive inline layouts can shift slightly; preview the result before sending.
- Output is larger than the input by design.
Check the formatted version in the HTML Email Previewer, then compress it with the HTML Email Minifier.
Frequently asked questions
Everything people usually ask about this tool.
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