HTML Formatter

Online tool for formatting HTML markup with indentation, line breaks, and minification.

Обработка выполняется локально в браузере. Данные не отправляются на сервер.

For this tool, processing runs locally in your browser and data is not sent to the server.

HTML Formatter is a free online tool for formatting HTML with indentation or minification. Useful for CMS fragments, email templates, and SSR output. Processing runs locally in your browser.

What it does

Output

Processing

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How to use

Paste HTML markup, template, CMS fragment, email block, or minified HTML.
Choose mode: format with indentation or minify.
Configure indent, attribute wrapping, comments, and preservation of script/style and pre/code/textarea.
Copy the result and review warnings if markup contains complex template syntax or unclosed tags.

More about this tool

HTML Formatter brings HTML markup to readable form with line breaks and indentation.

Useful for minified HTML, CMS fragments, email templates, SSR output, landing pages, widgets, and UI templates. Choose 2 or 4 space or tab indent, wrap attributes, preserve comments, and keep pre, code, textarea, script, and style content unchanged.

The formatter does not fix tag semantics, accessibility, SEO, or replace a W3C validator.

Processing runs locally in your browser.

Formats HTML with indentation
Can minify HTML
Supports attribute wrapping
Preserves comments, script/style, and pre/code
Suitable for CMS, email templates, SSR, and minified markup
Runs in the browser
Data is not sent to the server
No registration required

Frequently Asked Questions

What does the HTML formatter do?

It adds line breaks and indentation to HTML so code is easier to read, check, and edit.

Can I minify HTML?

Yes. Minify mode removes non-significant whitespace and line breaks between tags where it does not affect display.

Does the service fix HTML errors?

No. The tool formats markup but should not automatically fix semantics, accessibility, SEO, or W3C standard errors.

Is script and style content preserved?

Yes. script and style content should stay unchanged without deep JS/CSS formatting. Use separate formatters for JavaScript and CSS.

What happens to pre, code, and textarea?

Content of pre, code, and textarea should stay without aggressive formatting because spaces and line breaks inside may be significant.

Can attributes be wrapped to new lines?

Yes. For long tags you can wrap attributes to make markup easier to read.

Is the tool suitable for email templates?

Yes, but verify email rendering after formatting because email HTML often has specific nesting and inline styles.

Is this an HTML validator?

No. The formatter makes HTML readable. Use separate validators and auditors for HTML standards, accessibility, and SEO.

Is my data sent to the server?

No. Processing runs locally in your browser and data is not sent to the server.

Do I need to register?

No. The tool works without registration.

How to use

Paste HTML markup, template, CMS fragment, email block, or minified HTML.

Choose mode: format with indentation or minify.

Configure indent, attribute wrapping, comments, and preservation of script/style and pre/code/textarea.

Copy the result and review warnings if markup contains complex template syntax or unclosed tags.

More about this tool

HTML Formatter brings HTML markup to readable form with line breaks and indentation.

The formatter does not fix tag semantics, accessibility, SEO, or replace a W3C validator.

Processing runs locally in your browser.

Formats HTML with indentation
Can minify HTML
Supports attribute wrapping
Preserves comments, script/style, and pre/code
Suitable for CMS, email templates, SSR, and minified markup
Runs in the browser
Data is not sent to the server
No registration required

Frequently Asked Questions

What does the HTML formatter do?

It adds line breaks and indentation to HTML so code is easier to read, check, and edit.

Can I minify HTML?

Yes. Minify mode removes non-significant whitespace and line breaks between tags where it does not affect display.

Does the service fix HTML errors?

No. The tool formats markup but should not automatically fix semantics, accessibility, SEO, or W3C standard errors.

Is script and style content preserved?

Yes. script and style content should stay unchanged without deep JS/CSS formatting. Use separate formatters for JavaScript and CSS.

What happens to pre, code, and textarea?

Content of pre, code, and textarea should stay without aggressive formatting because spaces and line breaks inside may be significant.

Can attributes be wrapped to new lines?

Yes. For long tags you can wrap attributes to make markup easier to read.

Is the tool suitable for email templates?

Yes, but verify email rendering after formatting because email HTML often has specific nesting and inline styles.

Is this an HTML validator?

No. The formatter makes HTML readable. Use separate validators and auditors for HTML standards, accessibility, and SEO.

Is my data sent to the server?

No. Processing runs locally in your browser and data is not sent to the server.

Do I need to register?

No. The tool works without registration.