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Write and run JavaScript, HTML, and CSS with live preview and console output.
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Execute Python code directly in your browser using PyScript — no setup required.
Chat with LLMs directly in your browser using WebLLM. No server, no API keys.
Upload an image and let AI detect, label, and describe objects in real time.
Build high-quality prompts using expert prompt engineering frameworks.
Speech recognition and text-to-speech synthesis powered entirely by the browser.
Discover detailed information about your browser, device, and network.
Authenticate with Facebook and view your latest feed using the JavaScript SDK.
Learn Service Worker lifecycle, caching strategies, and offline support interactively.