How to convert HTML/CSS to a WordPress theme the simplest way

Have your HTML file, a site ZIP, or a live URL ready and a WordPress site to install onto — any host works. The whole flow takes 10–30 minutes.

What this does (read this first). HTMLtoWP turns your HTML/CSS design into a real WordPress theme — header.php, footer.php, functions.php, the full template hierarchy, enqueued assets. Homepage content is included, plus default templates for posts and pages. Extra HTML files in a site ZIP become unique page templates (you can also add those in preview); they become WordPress pages on install. Same-layout pages, posts, and menus you add through the WordPress admin like with any theme.

1

Point HTMLtoWP at your HTML

Open HTMLtoWP and pick the input that matches what you have:

  • Upload an .html file (max 5MB) or a .zip of the site folder (max 25MB). index.html is the homepage; other HTML pages in the ZIP become extra templates. CSS, images, and fonts in the ZIP are used as-is
  • Paste a URL of any live page — every linked asset is fetched automatically
  • Paste raw HTML for quick conversions of code from your editor

If your HTML lives in a local folder, zip that folder (keep relative paths like ./css/style.css) and upload the ZIP — assets convert with the page.

2

Let the conversion run

The engine analyzes your DOM, identifies header / nav / main / sidebar / footer regions, downloads assets, and generates the full WordPress theme — usually within a minute. Default templates are always created: Homepage, Single Post, Page, Archive, Search, 404. Extra HTML files in a ZIP become additional unique page templates.

3

Check the live preview

You land on a side-by-side view of your generated WordPress theme rendered exactly as it will appear on a real install. Use the page-template dropdown to flip between every template. Unique-layout pages from a ZIP already appear here; you can add more extra page templates if needed.

If any assets failed to download (private CDN, CORS-blocked file, broken link), they're flagged below the preview — drag-drop them in to complete the design.

4

Refine in plain English (optional)

The chat panel customizes the WordPress theme without code. Common refinements people ship in under 5 minutes:

  • "Make the header sticky on scroll"
  • "Convert the footer to 3 columns with widget areas"
  • "Add a sidebar with a search widget on single posts"
  • "Change menu hover color to #8b5cf6 with a 0.2s transition"

Each instruction modifies the relevant theme files (PHP templates, CSS, functions.php) and re-renders the preview live.

5

Download and install on WordPress

Click Download. You get one theme-name.zip with a complete WordPress theme inside:

/* Your theme structure */ style.css // theme metadata + base styles functions.php // enqueues, registers menus + sidebars header.php footer.php index.php page.php / single.php / search.php / 404.php sidebar.php assets/ // images, css, fonts, js

In WP admin: Appearance → Themes → Add New → Upload Theme → pick the .zip → Install Now → Activate. Homepage content is set automatically. Extra page templates from a site ZIP or added in preview also become WordPress pages. Same-layout pages, posts, and menus you add through WP admin.

That's the entire flow. The only step left is uploading your HTML.

Ready to convert your HTML to a WordPress theme?

Upload your HTML, watch the conversion run, refine via chat, install on WordPress — in minutes.

Try HTMLtoWP →