Create safe customer-facing templates with Liquid, ideal for startup founders building web apps, with 12k+ GitHub stars
intermediateโฑ 30 minutes๐ต Free (self-hosted)
11,836 stars1,535 forksRubyQuality 9/10Updated 7/5/2026100% free ยท open source
What it is
You use Liquid to create simple, safe web templates.
What you can make with it
Web templates for things like store fronts, product pages, and customer-facing emails.
How it helps
It keeps customers safe from code injection and helps developers work with non-coders by separating design data from code logic.
Real use case example
"A solo developer, Alex, wants to create a customizable product page on their e-commerce site using Liquid. Alex writes a template in Liquid and uses it to pull product names and prices from their Shopify store. When a product is added, they can easily update the page without needing to touch code."
If you're new
When starting a new project and you need to create simple web templates.
If you're senior
When working on a project and you need to integrate a templating language that's designed for safety and ease-of-use.
Common confusion cleared up
Some people get confused that Liquid is an AI tool, but it's actually a pre-existing templating language.
Best inside these AI tools
Claude Desktop
Pairs with
Stripe webhookNotion databaseAmazon S3
Why we list it on WorkflowStacks: It's included here because it's free, open-source, and widely used on Shopify.
What it does
Liquid is a safe, customer-facing template language that allows startup founders to create flexible web apps with dynamic content.
Install / run
Add the liquid gem to your Gemfile: `gem 'liquid'`
When to use it
โขYou need to generate dynamic content for your web app based on user data or external APIs.
โขYou want to separate presentation logic from application logic in your web app.
โขYou need to create customizable templates for your web app that can be edited by non-technical users.
Quick start
1Create a new Liquid template file, e.g., `template.liquid`, and add some sample content using Liquid tags, such as `{{ variable }}`.
2Create a Ruby file, e.g., `renderer.rb`, and require the Liquid gem: `require 'liquid'`.
3Use the Liquid `Template` class to parse your template file: `template = Liquid::Template.parse(File.read('template.liquid'))`.
4Assign some sample data to a hash, e.g., `data = { variable: 'Hello, World!' }`.
5Render the template with the sample data: `rendered_template = template.render(data)`.
Ready-to-paste prompt
Render a template with some sample data: `template = Liquid::Template.parse('Hello, {{ name }}!'); template.render('name' => 'Alice')`
Heads up: Remember to use the `strict_filters` option when parsing templates to prevent code injection attacks: `template = Liquid::Template.parse(File.read('template.liquid'), { strict_filters: true })`.
Saves to your device
What's inside โ free to inspect
No purchase needed
Read the entire source before you build โ unlike paid marketplaces that hide it behind a buy button.