sveltejs/svelte

Analysis updated 2026-06-20

★ 86,483JavaScriptAudience · developerComplexity · 2/5LicenseSetup · easy

Mindmap

mindmap
  root((Svelte))
    What it does
      Compile components
      Update DOM efficiently
      No runtime overhead
    Tech stack
      JavaScript
      TypeScript
      npm
    Use cases
      Web app UIs
      Interactive components
      Fast websites
    Key concept
      Build-time compilation
      Declarative syntax
    Community
      Discord
      Open Collective

mindmap root((Svelte)) What it does Compile components Update DOM efficiently No runtime overhead Tech stack JavaScript TypeScript npm Use cases Web app UIs Interactive components Fast websites Key concept Build-time compilation Declarative syntax Community Discord Open Collective

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What do people build with it?

USE CASE 1

Build reactive web app components that update the DOM instantly when data changes without shipping a heavy runtime library.

USE CASE 2

Compile Svelte components into small, fast JavaScript bundles for a performance-focused website or web app.

USE CASE 3

Create an interactive UI feature and share it as an open-source Svelte component on npm.

USE CASE 4

Replace a heavy React or Vue component with Svelte to reduce bundle size and improve page load speed.

What is it built with?

JavaScriptTypeScriptnpm

How does it compare?

	sveltejs/svelte	louislam/uptime-kuma	anuraghazra/github-readme-stats
Stars	86,483	86,301	79,282
Language	JavaScript	JavaScript	JavaScript
Setup difficulty	easy	easy	moderate
Complexity	2/5	2/5	2/5
Audience	developer	ops devops	developer

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 30min

Use freely for any purpose, including commercial projects, as long as you keep the copyright notice.

In plain English

Svelte is a way to build web applications, described in the README as "a compiler that takes your declarative components and converts them into efficient JavaScript that surgically updates the DOM." In other words, you write your interface as components in Svelte's syntax, and the Svelte tooling translates those components at build time into plain JavaScript that updates only the parts of the page that need to change. The README is brief and points to the official Svelte website for details, the Discord chat for the community, a roadmap page, and a contributing guide. The project is MIT-licensed and is described as community-driven, with funding via Open Collective covering hosting and development expenses. Beyond this, the README does not detail features, syntax, supported platforms, or use cases, so a complete explanation is not possible from the provided data alone.

Copy-paste prompts

Prompt 1

Write a Svelte component that fetches a list of items from an API, shows a loading spinner while fetching, and displays an error message if the request fails.

Prompt 2

Build a Svelte counter component with a button that increments the count and animates the number change with a built-in transition.

Prompt 3

Create a Svelte form with name and email inputs, validate them on submit without a form library, and display inline error messages.

Prompt 4

Set up a Svelte project with Vite, add a global store for user authentication state, and protect a route so only logged-in users can access it.

Prompt 5

Write a Svelte component that reactively filters a product list by a search input, updating the displayed results instantly as the user types.

Frequently asked questions

What is svelte?

Svelte is a compiler that converts your component code into efficient plain JavaScript at build time, updating only the parts of the page that change, no runtime framework library is shipped to the browser.

What language is svelte written in?

Mainly JavaScript. The stack also includes JavaScript, TypeScript, npm.

What license does svelte use?

Use freely for any purpose, including commercial projects, as long as you keep the copyright notice.

How hard is svelte to set up?

Setup difficulty is rated easy, with roughly 30min to a first successful run.

Who is svelte for?

Mainly developer.

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