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Haml VS Pug

Compare Haml VS Pug and see what are their differences

Haml logo Haml

HTML Abstraction Markup Language - A Markup Haiku

Pug logo Pug

Pug is a robust, elegant, feature rich template engine for Node.js
  • Haml Landing page
    Landing page //
    2021-09-22
  • Pug Landing page
    Landing page //
    2023-09-28

Haml features and specs

  • Readability
    Haml syntax is designed to be clean and indentation-based, which can lead to more readable code compared to standard HTML, especially in complex projects.
  • DRY Principle
    Haml encourages the DRY (Don't Repeat Yourself) principle by minimizing the need for closing tags and emphasizing reusable code snippets, reducing redundancy.
  • Embedded Ruby
    Haml allows seamless embedding of Ruby code, making it a powerful tool for developers working in Ruby environments, as logic and view are more closely intertwined.
  • Whitespace Sensitivity
    The indentation-based syntax reduces clutter by removing the need for explicit closing tags, curly braces, and other traditional HTML structure elements.
  • Maintaining Consistency
    The enforced indentation and structure positively guide developers towards structured and consistent code, which can be enforced across a team.

Possible disadvantages of Haml

  • Learning Curve
    Developers accustomed to traditional HTML might face a learning curve when first encountering Haml, due to its unique syntax and whitespace significance.
  • Whitespace Sensitivity
    The reliance on indentation and whitespace for code structure can lead to frustrating errors if the code is not indented correctly, causing potential debugging challenges.
  • Tooling and Support
    Haml might not be as widely supported by various IDEs and text editors compared to standard HTML or other templating languages, potentially hindering productivity.
  • Performance Overhead
    When rendering Haml templates, there might be a slight performance hit due to the processing needed to convert Haml into HTML.
  • Limited Adoption
    Haml is not as widespread as other templating languages, which might lead to fewer community resources, libraries, or plugins compared to more popular alternatives.

Pug features and specs

  • Simplified Syntax
    Pug offers a simplified and clean syntax compared to standard HTML, omitting the need for closing tags and reducing the repetitive structure, which makes it easier to write and read.
  • Code Reusability
    Pug supports mixins and includes, which allow for the reuse of code snippets and components throughout the templates, promoting DRY (Don't Repeat Yourself) principles.
  • Logic in Templates
    It provides the ability to incorporate JavaScript logic directly within the templates, allowing for dynamic content generation and more interactive pages.
  • Compatibility with Existing JavaScript
    Pug integrates smoothly with Node.js and JavaScript applications, making it easy to use within popular frameworks like Express.
  • Efficient Compilation
    Pug compiles templates into highly optimized JavaScript code, resulting in fast rendering performance in web applications.

Possible disadvantages of Pug

  • Learning Curve
    Pug's unique syntax can be initially challenging to learn and understand, especially for developers accustomed to traditional HTML.
  • Limited HTML Direct Use
    Due to its abstraction over HTML, developers might find it inconvenient when they need to use raw HTML elements or script tags that do not translate directly.
  • Debugging Complexity
    Debugging Pug templates can sometimes be more complex as errors may not be as apparent as in raw HTML, requiring familiarity with both Pug and the underlying HTML structure.
  • Dependency Management
    Using Pug adds another dependency to the project, and developers need to manage and maintain it alongside other packages, which can be an added overhead.
  • Not Universally Adopted
    While popular, Pug is not as universally adopted as raw HTML or some other templating languages, potentially resulting in fewer resources or community support.

Analysis of Pug

Overall verdict

  • Pug is a good choice for developers looking for a concise and expressive way to template their HTML, especially those who prioritize readability and maintainability in their codebase.

Why this product is good

  • Pug, formerly known as Jade, is a template engine for Node.js and browsers that allows developers to write cleaner, more readable code by using a simplified, indentation-based syntax. It compiles into HTML, making it easier to maintain and reduces the risk of HTML errors. Pug is particularly appreciated for its minimalist style, logical nesting, and powerful mixins.

Recommended for

  • Developers who are comfortable with indentation-based syntax and want to speed up the HTML templating process.
  • Projects that require dynamic and reusable components due to Pug's support for mixins and template inheritance.
  • Teams using Node.js who want to integrate a powerful and clean templating solution seamlessly.

Haml videos

How to Get Baby in Urdu&Hindi | Hamal Check krny ka Treeka | Haml Ghar Ma Chk Krain | Get B In Urdu

Pug videos

Everything You Need to Know About Pugs - Characteristics and Care

More videos:

  • Review - Wolf Dog Reviews Food With Pug!
  • Review - Pug Dog Breed - Pros and Cons

Category Popularity

0-100% (relative to Haml and Pug)
Javascript UI Libraries
29 29%
71% 71
Development
19 19%
81% 81
Programming
100 100%
0% 0
Tool
0 0%
100% 100

User comments

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Social recommendations and mentions

Pug might be a bit more popular than Haml. We know about 21 links to it since March 2021 and only 19 links to Haml. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Haml mentions (19)

  • Douglas Hofstadter on Lisp (1983)
    I never suggested that I was the first person to think of this; not having dealt with any Lisp since (hmmm) 1990 via Scheme in my introductory CS 212 class at Cornell probably has something to do with my ignorance of the prior art in this area. I do like your approach of breadcrumbing me instead of giving me the answer, though... Best I can guess is "tooling" and simply that S-expressions are simply too embedded... - Source: Hacker News / 8 months ago
  • A RuboCop Configuration Tailored for Phlex
    Phlex takes a more Ruby-centric approach to generating HTML by using Ruby classes and methods instead of traditional template files like ERB or HAML. While this is great for reusability and code organization (And writing more Ruby 🤩), it can lead to long methods and classes, especially when building complex components or pages. Adding TailwindCSS into the mix further increases line lengths because of its... - Source: dev.to / 9 months ago
  • Building a syntax highlighting extension for VS Code
    First of all, I like Slim. I like the beauty and cleanness of Slim templates, to me they are way more readable than regular ERB templates and I think they fit in the ruby/Rails ecosystem very well. Slim is a close cousin to Haml, without the ugly percent characters, haha. I've used Slim exclusively in my projects since about 2016. - Source: dev.to / over 1 year ago
  • Hamlet: A type-safe Haml template engine for Go
    > I can't say what problem it is supposed to solve "Haml accelerates and simplifies template creation" https://haml.info/ If you'd rather write raw HTML, keeping track of closing tags etc, then don't use HAML. No need to bash it because you personally feel it is ugly or unnecessary. FWIW I personally feel the exact opposite. - Source: Hacker News / over 1 year ago
  • Hamlet: A type-safe Haml template engine for Go
    There is a better side by side of the syntax here https://haml.info (i've been using haml for 17 years lol, I find it more enjoyable to read and write). - Source: Hacker News / over 1 year ago
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Pug mentions (21)

  • Chapter 7: HTML part two
    For a more robust approach, we'd probably need to install a templating language of some kind, such as Twig, EJS, Handlebars, Pug or Mustache (this is not a complete list!). Reading the documentation for posthtml-modules, you'll notice it doesn't mention package.json or any of the approaches we've used in this guide. Instead, the examples are in JavaScript and we've advised to add this to our Node application. - Source: dev.to / 3 months ago
  • Building Vue Components With Pug & Stylus
    If you have a bit of Nodejs SSR background, you would already be accustomed to templating libraries like Pug, Handlebars, EJS, etc. If you’re from a PHP background you would be familiar with the Blade templating engine. These templating libraries basically help you render dynamic data from the backend on the frontend. They also help you generate markup with loops based on conditions. - Source: dev.to / about 1 year ago
  • Just Normal Web Things
    The right way to start is with HTML and motherfucking web site. https://motherfuckingwebsite.com/ Really. At this point this is what web sites should strive to be. Pug is a great way to write HTML by hand. I integrated it with GitHub Pages so pug sources get compiled to HTML and published when commits are pushed. Great experience. https://pugjs.org/ - Source: Hacker News / almost 2 years ago
  • Migrate Your Express Application to Fastify
    To illustrate the process of migrating from Express to Fastify, we have prepared a demo application. This application utilizes Express, Mongoose, and Pug to create a URL Shortener app as follows:. - Source: dev.to / almost 2 years ago
  • Simplify Form Development with Smarkform!
    Disclaimer: The markup of CodePen examples is still in Pug. However, you can view it compiled as HTML by opening the code tab menu and selecting "View compiled HTML" (But, by the way, if you are not already familiar with Pug Templates, I strongly advise you to check them out). Source: almost 2 years ago
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What are some alternatives?

When comparing Haml and Pug, you can also consider the following products

Handlebars - Handlebars is a JavaScript template library that is, more or less, based on ...

Jinja2 - Jinja2 is a template engine written in Python.

Fortitude - Views Are Code: use all the power of Ruby to build views in your own language. - ageweke/fortitude

slm - Slim, Jade like template engine for node

jquery-template - A template plugin for jQuery. Allows templating without cluttering JavaScript code with markup.

Actix - Rust's powerful actor system and most fun web framework