Squirrelly is a modern, configurable, and blazing fast template engine implemented in JavaScript. It supports helpers, partials, filters, and autoescaping. It works out of the box with ExpressJS and the full version weighs only ~2.2KB gzipped.

Notice: Squirrelly Version 8 is coming out soon!

Monthly Downloads: 0
Programming language: JavaScript
Tags: Templating Engines     Templates     Templating     Ejs     Mustache     Handlebars    
Latest version: v8.0.0-beta.9

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Squirrelly is a modern, configurable, and blazing fast template engine implemented in JavaScript. It works out of the box with ExpressJS and the full version weighs only ~3.3KB gzipped.

This is version 8 - a new, more powerful rewrite of Squirrelly. It adds multiple features (like filter parameters, whitespace control, partials, and template inheritance) to bring you a template engine with the power of Nunjucks, the simplicity of EJS, and the small bundle size of its earlier versions.

Version 8 is still in beta. Squirrelly v7 will continue to be maintained, and can be found at https://github.com/squirrellyjs/squirrelly/tree/v7. Since the API of v8 isn't fully documented yet, most people should probably use v7 for the next few weeks.

Read about the changes

Why Squirrelly?

Simply put, Squirrelly is super lightweight, super fast, super powerful, and super simple.

🌟 Features

  • 🔧 Helpers, filters
  • 🔧 Great error reporting
  • 📦 0 dependencies
  • 🔨 Conditionals
  • 🔧 Better quotes/comments support
    • ex. {{someval + "name }}" }} compiles correctly, while it fails with DoT or EJS
  • ⚡️ Exports ES Modules as well as UMD
  • 🔨 Loops
  • 🔧 Custom delimeters
  • 📝 Easy template syntax
  • 🔧 Precompilation
  • 🔨 Partials
  • 🔧 Inline JavaScript
  • 🔨 Comments
  • 🔧 Caching
  • 🚀 Super Fast
    • Squirrelly has been benchmarked against Marko, Pug, doT, Swig, Handlebars, Mustache, and Nunjucks. In each test, Squirrelly was fastest.
  • ⚡️ Async support: async filters, helpers, partials
  • 🔧 Template inheritance

📜 Docs

We know nobody reads through the long and boring documentation in the ReadMe anyway, so head over to the documentation website:

📝 https://squirrelly.js.org

📓 Examples

Simple Template

var myTemplate = "<p>My favorite kind of cake is: {{it.favoriteCake}}</p>"

Sqrl.render(myTemplate, {favoriteCake: 'Chocolate!'})
// Returns: '<p>My favorite kind of cake is: Chocolate!</p>


{{~if(it.somevalue === 1)}}
Display this
Display this


{{~each(it.somearray) => val, index}}
Display this
The current array element is {{val}}
The current index is {{index}}

✔️ Tests

Tests can be run with npm test. Multiple tests check that parsing, rendering, and compiling return expected results, formatting follows guidelines, and code coverage is at the expected level.


To be added

Projects using squirrelly

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Made with ❤ by @nebrelbug and all these wonderful contributors (emoji key):

<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section --> <!-- prettier-ignore-start --> <!-- markdownlint-disable --> Ben Gubler💻 💬 📖 ⚠️ Clite Tailor🤔 💻 Ioan CHIRIAC💻 🤔

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This project follows the all-contributors specification. Contributions of any kind are welcome!


  • Async support and file handling were added based on code from EJS, which is licensed under the Apache-2.0 license. Code was modified to throw a Squirrelly Error.

*Note that all licence references and agreements mentioned in the squirrelly README section above are relevant to that project's source code only.