What is the difference between template models and preprocessors?

Question

There are Template Engines and there are preprocessors .

List of some template engines

• Smarty
• Twig
• TinyButStrong

List of some preprocessors

• Haml
• Slim
• Jade / pug

What is the difference?

Answer 1

Haml, Slim and Jade / Pug do not define themselves as preprocessors or are different from template engines:

Haml is a markup language that is used to cleanly and easily describe the HTML of any web document without using inline code. Haml functions as a replacement for embedded page template systems.

Slim - ...

Pug - , Haml JavaScript

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