Q: Does the converter support inline CSS and scripts?

Yes, our converter accurately preserves inline ` ` and ` ` tags by appending a dot after the tag name (like `style.` or `script.`). This syntax instructs the Pug compiler to treat the enclosed content as raw, unescaped text blocks. If your templates include inline SVG vector icons, consider using our SVG to JSX converter for React integration.

Question 1

What is Pug?

Accepted Answer

Pug is a high-performance, whitespace-sensitive templating engine designed for Node.js and web browsers. Originally inspired by Haml, Pug simplifies HTML authoring by eliminating angle brackets and closing tags in favor of clean indentation. It allows software engineers to embed dynamic JavaScript expressions, conditional logic, loops, and reusable template mixins directly into their view templates.

Question 2

Is Pug the same as Jade?

Accepted Answer

Yes, Pug is the exact same template engine formerly known as Jade. The project was officially renamed to Pug in 2016 following a registered trademark dispute with Software AG. Pug 2.0 and 3.0 brought performance enhancements and new syntax features, but it maintains full conceptual continuity with older Jade template codebases.

Question 3

How do I convert HTML to Pug?

Accepted Answer

To convert HTML to Pug, paste your HTML markup directly into the input pane above or load an existing `.html` file. Codeflips instantly analyzes your DOM hierarchy and produces concise, indented Pug template code with optional `div` tag omission. If your layout requires modern utility styling, you can also transform your styles using our CSS to Tailwind converter.

Question 4

How can I convert Pug back to HTML?

Accepted Answer

You can convert Pug back to HTML on Codeflips by clicking the ⇄ Swap button in the toolbar above the editor. The reverse compiler processes your indentation and attributes, generating standard, valid HTML5 markup with matching closing tags. This makes it effortless to test template outputs or migrate server-rendered Pug views back to static HTML files.

Question 5

How are classes, IDs and attributes written in Pug?

Accepted Answer

In Pug, classes and IDs use concise CSS-like notation placed immediately after the tag name, such as `button#submit.btn.btn-primary`. Custom HTML attributes and event handlers are enclosed within parentheses separated by commas, such as `input(type="email", required, placeholder="name@domain.com")`. If a selector omits the tag name entirely, Pug automatically defaults to rendering a `

` element.

Question 6

Does the converter support inline CSS and scripts?

Accepted Answer

Yes, our converter accurately preserves inline `

Question 7

How do I use Pug with Express.js?

Accepted Answer

To use Pug with Express.js, install the package via `npm install pug`, then configure your Express application with `app.set('view engine', 'pug')` and `app.set('views', './views')`. Place your `.pug` files inside your designated views directory and render dynamic responses using `res.render('dashboard', { title: 'Analytics', user: currentUser })`. Express automatically compiles and caches templates in production.

Question 8

Is Pug still maintained and worth using?

Accepted Answer

Yes, Pug remains actively maintained under the OpenJS Foundation ecosystem and is widely used across production Express.js and Koa microservices. It is particularly valuable for server-rendered HTML applications, email template compilation, and static site generation where writing verbose, repetitive HTML tags slows down development velocity and increases the likelihood of unclosed tag bugs.

Question 9

What are the benefits of Pug over plain HTML?

Accepted Answer

The primary benefits of Pug over plain HTML include significantly reduced file sizes, cleaner readable syntax, and built-in support for template inheritance, includes, and loops. By discarding closing tags, Pug prevents syntax errors caused by mismatched tags. In addition, Pug enables seamless JavaScript variable interpolation and conditional rendering directly inside your templates without requiring complex frontend frameworks.

Question 10

Why does my Pug output have indentation errors?

Accepted Answer

Pug indentation errors occur when you mix tab characters with spaces or use inconsistent indentation depths between nested elements. Because Pug relies strictly on whitespace to understand parent-child relationships, every indentation level must use identical spacing. Codeflips helps you avoid formatting errors by offering configurable two-space, four-space, or tab indentation with instant visual feedback.

HTML to Pug Converter - Free & In-Browser

How to Use the HTML to Pug Converter

1. Paste HTML Markup

2. Customize Pug Shorthand

3. Copy Pug or Invert

Real Example: HTML to Pug Input & Transformed Output

Primary Use Cases for HTML to Pug

Express.js & Node Server-Side Rendering

Legacy Jade Template Modernization

Concise Frontend Component Authoring

About the HTML to Pug Converter

Deep Dive: Engineering & Data Handling

Technical Architecture & Execution Model

Frequently Asked Questions