Is the Inline CSS Converter free?

Yes — the Inline CSS Converter is completely free, with no account, subscription, signup, or usage limits.

Is my data uploaded or stored?

No. The Inline CSS Converter processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.

Does the Inline CSS Converter work offline?

Yes. Once the page has finished loading, the Inline CSS Converter works without an internet connection.

Which browsers does the Inline CSS Converter work in?

The Inline CSS Converter works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.

Which CSS selectors are supported?

It supports element (tag), class (.class), and id (#id) selectors, including simple combinations like p.note. Complex descendant or pseudo-selectors are not inlined.

Why do email clients need inline CSS?

Many email clients, including Gmail, strip out blocks from the document head. Inline styles applied directly to elements are far more reliably rendered.

Inline CSS Converter

Convert external CSS stylesheets to inline styles for email templates.

HTML with <style> block

HTML with Inline Styles

Output appears here

Runs entirely in your browser. No data is uploaded.

Free browser-based tool · Runs 100% on your device · Last updated July 7, 2026

What is the Inline CSS Converter?

The free Inline CSS Converter moves CSS rules from a <style> block into inline style attributes on the matching elements. Inline styles are required by most email clients (Gmail, Outlook), which strip out <style> tags — so this tool is essential for building HTML email templates.

→ Prepare HTML email templates for Gmail, Outlook, and Apple Mail.
→ Inline styles for email newsletters and campaigns.
→ Ensure consistent rendering where <style> blocks are stripped.
→ Convert a small styled snippet into a self-contained inline version.
→ Fix emails that look unstyled in certain clients.

How to Use the Inline CSS Converter

1 Paste HTML that includes a <style> block into the input box.
2 The tool reads your CSS rules (tag, class, and id selectors).
3 Matching declarations are merged into each element’s style attribute.
4 Copy the HTML with Inline Styles for use in your email template.

Key Features

🎨
Email-ready output

Produces inline styles that survive email-client sanitising.
🎯
Tag, class & id selectors

Applies rules matched by element, .class, or #id.
🔗
Merges existing styles

Appends to any style attribute already on an element.
🔒
No uploads

Conversion runs locally in your browser.

Example Usage

Example Input

<style>.btn{color:#fff;padding:12px}</style>
<a class="btn">Click</a>

Example Output

<a class="btn" style="color:#fff; padding:12px">Click</a>

Frequently Asked Questions about the Inline CSS Converter

What is the Inline CSS Converter?: The Inline CSS Converter is a free online tool that lets you convert external CSS stylesheets to inline styles for email templates. It runs entirely in your browser, so there is nothing to install and nothing is uploaded to a server.
Is the Inline CSS Converter free?: Yes — the Inline CSS Converter is completely free, with no account, subscription, signup, or usage limits.
Is my data uploaded or stored?: No. The Inline CSS Converter processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.
Does the Inline CSS Converter work offline?: Yes. Once the page has finished loading, the Inline CSS Converter works without an internet connection.
Which browsers does the Inline CSS Converter work in?: The Inline CSS Converter works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.
Which CSS selectors are supported?: It supports element (tag), class (.class), and id (#id) selectors, including simple combinations like p.note. Complex descendant or pseudo-selectors are not inlined.
Why do email clients need inline CSS?: Many email clients, including Gmail, strip out <style> blocks from the document head. Inline styles applied directly to elements are far more reliably rendered.