Convert Svelte Files to Single HTML Files

Svelte Bundle CLI is a command-line tool that bundles Svelte applications into a single HTML file.

It uses Vite and server-side rendering (SSR) to simplify deployment, particularly for content management systems (CMS) that restrict uploads to HTML, CSS, and JavaScript.

While bundling entire applications is generally discouraged due to file size, this tool provides a practical solution for integrating Svelte components into environments with such limitations.

GitHub Repo

Docs

Features

🔄 Server-side rendering for SEO optimization.

⚡ Zero configuration required.

🔌 Built-in hydration for client interactivity

📱 Responsive design support.

📦 Single file output with minified HTML, CSS, and JS.

🎨 TailwindCSS support.

🛠️ Command line interface with customization options.

Use Cases

Educational Materials: Create self-contained, interactive examples or exercises using Svelte for educational purposes. Learners can readily access and interact with the code without complex setup procedures.
CMS Integration: Deploy Svelte components within CMS platforms that only accept HTML, CSS, and JavaScript.
Email Templates: Embed interactive Svelte components directly into HTML email templates. For example, create dynamic surveys or product configurators within email communications.
Static Site Generation: Generate static HTML files for Svelte components, suitable for simple landing pages or documentation sites. This can improve performance and reduce server-side requirements.
Rapid Prototyping: Quickly bundle and share Svelte prototypes with clients or stakeholders without setting up a full development server. This allows for swift feedback and iterative development.

Installation

To install Svelte Bundle CLI, follow these steps:

1. Install Globally: Run the following command to install the tool globally:

   npm install -g svelte-bundle

2. Use with npx: Alternatively, you can execute it without global installation:

   npx svelte-bundle

Usages

Basic Command:

   svelte-bundle -i <input-file.svelte> [options]

Example: To bundle an Svelte file without Tailwind CSS:

   svelte-bundle -i src/App.svelte

Output to a Specific Directory:

   svelte-bundle -i src/App.svelte -o dist/

Enable Tailwind CSS:

   svelte-bundle -i src/App.svelte --tw

Sample Input File

<script>
  let count = 0;
</script>
<main class="container mx-auto p-4">
  <h1 class="text-2xl font-bold mb-4">Counter: {count}</h1>
  <button 
    on:click={() => count++}
    class="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded"
  >
    Increment
  </button>
</main>
<style>
  h1 {
    color: #333;
  }
</style>

Example Output Structure

The output will be a minified HTML file that includes:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <title>Static Svelte App</title>
    <style>/* Minified CSS here */</style>
</head>
<body>
    <div id="app"><!-- SSR content here --></div>
    <script>/* Minified JS here */</script>
</body>
</html>

Using with Tailwind CSS:

Enable Tailwind CSS processing using the --tw flag:

svelte-bundle -i src/App.svelte --tw

If you have a custom tailwind.config.js file, you can specify its path using the --tw-config option:

svelte-bundle -i src/App.svelte --tw --tw-config path/to/tailwind.config.js

This ensures your custom Tailwind configurations are applied during the bundling process. For example, if your tailwind.config.js is in the root of your project:

svelte-bundle -i src/App.svelte --tw --tw-config tailwind.config.js

Related Resources

Svelte Official Documentation: Comprehensive resource for all things Svelte. Visit Here
Vite Documentation: Learn about Vite, the build tool behind Svelte Bundle CLI. Visit Here
Tailwind CSS Documentation: Understand how to integrate Tailwind with your projects. Visit Here

FAQs

Q: Can I use Svelte Bundle CLI with SvelteKit?
A: No, Svelte Bundle CLI is not designed for SvelteKit. It works with individual .svelte files only.

Q: What are the system requirements for Svelte Bundle CLI?
A: You need Node.js and npm installed on your machine to use Svelte Bundle CLI.

Q: Can I customize the output directory?
A: Yes, you can specify the output directory using the -o option in the command line.

Q: Is Tailwind CSS support stable?
A: The Tailwind CSS support is currently in beta, so expect some limitations.