Why LiveCodes?
LiveCodes stands out from other code playgrounds with its unique combination of features, privacy focus, and client-side architecture. Here’s what makes it special.A code playground that just works
No servers to configure
Everything runs in the browser. No backend infrastructure needed.
No databases to maintain
Projects are stored locally in your browser or optionally synced via GitHub.
No installs required
Open livecodes.io and start coding immediately.
No build steps
Automatic compilation and module resolution - just write code.
No subscription fees
Completely free and open-source. No premium tiers or paywalls.
No account required
Use all features without signing up. GitHub login only for advanced features.
Client-side architecture
Privacy and security
Unlike server-side playgrounds, LiveCodes runs entirely in your browser:Your code never leaves your machine unless you explicitly choose to share or deploy it.
- Private by default: Your code and data stay on your device
- No tracking: LiveCodes doesn’t collect analytics or telemetry
- Secure execution: Code runs in isolated iframes with proper sandboxing
- Offline capable: Continue coding even without internet connection (after initial load)
Performance benefits
- Instant execution
- No rate limits
- Scales infinitely
Code runs immediately in the browser without server round-trips. See results as you type with live reload.
Cost effectiveness
LiveCodes is free to use because it doesn’t require expensive server infrastructure. You can even self-host it on free static hosting services.
Extensive language support
LiveCodes supports 90+ languages and frameworks - more than most other playgrounds:Modern frameworks
- React (JSX/TSX) with automatic imports
- Vue 2 & 3 with Single File Components
- Svelte with component compilation
- Solid with JSX transformation
- Angular, Lit, Stencil, and more
Backend languages in the browser
Run server-side languages directly in the browser using WebAssembly:- Python (Brython & Pyodide)
- Ruby (ruby.wasm)
- PHP (php-wasm)
- Go (TinyGo)
- C/C++ (Emscripten)
- Rust
- Lua
- And many more!
Powerful editor features
Monaco editor with IntelliSense
LiveCodes uses the same editor that powers Visual Studio Code:Intelligent autocomplete
Context-aware suggestions as you type, powered by TypeScript’s language service.
Automatic Type Acquisition
Types for npm packages are automatically downloaded for better autocomplete.
Hover information
See type information and documentation by hovering over symbols.
Error detection
Real-time syntax and type checking with inline error messages.
Example: Automatic types for npm modules
Module imports made easy
Import packages from multiple sources without configuration:NPM packages
Deno and JSR
GitHub
LiveCodes automatically resolves and bundles modules - no build tools required.
Embeddable SDK
The LiveCodes SDK is designed for developers:Lightweight and fast
<5kb gzipped
Minimal bundle size won’t slow down your application.
Zero dependencies
No transitive dependencies to worry about.
TypeScript support
Full type definitions for excellent developer experience.
Framework wrappers
Official React, Vue, Svelte, and Solid components.
Programmatic control
The SDK provides extensive methods to control playgrounds:Import and export
LiveCodes supports importing from and exporting to various formats:Import sources
- GitHub
- Other playgrounds
- Local files
- URLs
Import repositories, gists, or individual files:
Export formats
JSON configuration
Export your project as a JSON file that can be imported later or shared with others.
Share and collaborate
Multiple sharing options
Long URLs
Compressed code in URL query string. No expiration.
Short URLs
Shortened URLs via dpaste service. Expires in 365 days.
QR codes
Generate QR codes for easy mobile sharing.
Broadcast mode
Broadcast your code changes in real-time to multiple viewers - perfect for live coding sessions and teaching.
Sync across devices
Optionally sync your projects across devices using GitHub as a backend.Deploy with one click
Deploy your projects to GitHub Pages directly from LiveCodes:No configuration needed - LiveCodes handles the entire deployment process.
Developer-friendly features
Built-in dev tools
- Console
- Compiled code viewer
- Test runner
Full-featured console with:
console.log,console.error,console.warn- Object inspection
- Clear and filter buttons
- Timestamp display
Code formatting
Automatic code formatting with Prettier integration:- JavaScript/TypeScript
- HTML/CSS
- JSON
- Markdown
- And more
Use cases
LiveCodes excels in scenarios where other playgrounds fall short:Educational content
Interactive tutorials
Embed live examples in documentation and blog posts without server costs.
Coding courses
Create hands-on exercises with instant feedback for students.
Professional use
Technical interviews
Share coding challenges with candidates while respecting their privacy.
Bug reports
Create minimal reproducible examples with all 90+ languages.
Prototyping
Quickly test ideas with any framework or library from npm.
Code reviews
Share code snippets with full context and dependencies.
Open source and transparent
Community-driven
- Active development on GitHub
- Welcomes contributions
- Transparent roadmap
- Regular updates and bug fixes
Self-hosting freedom
Unlike SaaS playgrounds:- Host on your own infrastructure
- Customize to your needs
- No dependency on external services
- Deploy on free static hosting
Comparison with alternatives
| Feature | LiveCodes | Other playgrounds |
|---|---|---|
| Client-side execution | ✅ | ❌ (most are server-side) |
| Language support | 90+ | Usually less than 20 |
| Privacy focused | ✅ | ❌ (code sent to servers) |
| Free & unlimited | ✅ | ⚠️ (often have limits) |
| Self-hosting | ✅ | ❌ (usually SaaS only) |
| Open source | ✅ MIT | ⚠️ (many are proprietary) |
| Offline capable | ✅ | ❌ |
| No account needed | ✅ | ⚠️ (many require signup) |
| Lightweight SDK | Less than 5kb | Often more than 50kb |
| WebAssembly languages | ✅ | ❌ (most lack this) |
Getting started
Ready to try LiveCodes?Start coding now
Open the playground and start experimenting
Follow the quickstart
Learn how to embed LiveCodes in your app
Explore features
Discover all the powerful features
View on GitHub
Star the repo and contribute