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Handlebars

A JavaScript templating library that fills in HTML or text templates with data, largely compatible with Mustachandlebars-lang/handlebars.js

GitHub Download v4.7.10
Stars
18.7k
Forks
2.1k
Licence
MIT
Language
JavaScript
Last update
30 days ago
Type
Library

What it is

Handlebars.js lets you write templates with placeholders like {{name}} and loops or conditions, then combine them with a data object to produce HTML or text. It is largely compatible with Mustache templates, so existing templates can often be reused. Developers use it to generate page markup in browsers or on servers without writing string-building code by hand.

  • Render a page listing items from a JSON object using {{#kids}} loops
  • Precompile templates at build time so the browser loads ready-to-run functions
  • Write custom helpers to format dates or text inside templates
  • Use partials to reuse shared snippets across several templates

Great for

  • JavaScript developers who need to generate HTML from data in a browser or Node.js app
  • Teams migrating from Mustache templates who want a mostly compatible syntax
  • Projects that want precompiled templates to reduce startup work
  • Developers who need custom reusable template helpers for formatting values

Not ideal for

  • Projects that must support older environments beyond ECMAScript 2020, since the README says to use version 4 for those
  • Users who need Mustache lambdas or alternative delimiters, which the README says are not supported
  • Non-developers looking for a no-code site builder
Step-by-step guide: how to use HandlebarsInstall, first run, examples, tips and FAQs
Handlebars vs mustache.js

How to get it

  1. 1

    Install with a package manager

    You'll need: Node.js or a modern browser

    Clone the repository

    git clone https://github.com/handlebars-lang/handlebars.js
  2. 2

    Run it

    • Follow the installation guide at handlebarsjs.com to add the package to your project
    • Write a template string with placeholders such as {{name}}
    • Call Handlebars.compile on the template string to get a function
    • Call the returned function with a data object to get the rendered output
  3. 3

    Get the most out of it

    • Precompile templates as the README describes to speed up startup
    • Use the compat flag only when you need recursive lookup, since it costs performance
    • Use explicit path references in performance-sensitive code instead of recursive lookup
    • Try the live playground at handlebarsjs.com to test templates before wiring them in

Downloads

Source code (.zip)master branch · straight from GitHubRelease v4.7.10Release notes and sourceOfficial website & docshandlebarsjs.com

Strengths

  • Familiar, readable syntax that is largely compatible with Mustache
  • Works in Node.js and major browsers, per the README
  • Supports precompilation for faster startup, and has an official docs site and live playground

Trade-offs

  • Some Mustache behaviors are not implemented, such as recursive lookup unless the compat flag is set, which has a performance cost
  • Requires JavaScript knowledge to wire up data and helpers
  • Targets ECMAScript 2020, so older browsers need version 4

How it compares

ProjectStarsTypeLevelUpdatedBest for
handlebars.js (this)18.7kLibrarybeginner30 days agoJavaScript developers who need to generate HTML from data in a browser or Node.js app
mustache.js16.7kLibrarybeginner2.4 years agoDevelopers who need simple text or HTML templating in a browser or Node.js project
buildawesome20kDev toolintermediate6 days agoDevelopers who want a static site generator with a lighter setup than Jekyll
hyperui12.3kLibrarybeginner11 days agoDevelopers building marketing sites with Tailwind CSS
dashboards11kLibraryintermediate5.0 years agoDevelopers who need a starting layout for an internal analytics dashboard
cangjie-skill12kDev toolintermediate1 months agoDevelopers building reusable Agent Skills from a book or course they want an AI agent to apply

Stats synced from GitHub. The assessment above was drafted with AI from the project's README on 2026-10-29 and may miss recent changes — check the README before relying on a command. MIT licence: free to use, modify and distribute, including commercially, as long as you keep the copyright notice.