Interactive Developer Suite • WebGPU, WASM & Cloud AI • Zero Setup

Build, Learn & Ship Web Tools

Browser-based developer tools and interactive demos. No installation, no server — just open and code.

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10 Interactive Tools

Zero Install or Setup

Open & Free Forever

Featured

WebGPU / WASM

Local AI Image Upscaler

Upscale and sharpen images 2x & 4x in your browser using local Real-ESRGAN AI with zero server uploads.

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Featured

WebLLM v3

AI Chat Assistant

Chat with local LLMs directly in your browser using WebLLM & WebGPU with tool calling — no server or API keys.

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Featured

Live Sandbox

Online JavaScript Editor

Write and run JavaScript, HTML, and CSS in a sandboxed environment with live preview, console capture, and sharing.

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PyScript

Python Playground

Execute multi-file Python code directly in your browser via PyScript with real-time stdout/stderr capture.

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Multi-Model Vision

Image Object Identifier

Upload any image and compare state-of-the-art vision models with pixel-precise interactive bounding boxes.

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Prompt Studio

PromptCraft

Engineer structured, high-scoring AI prompts with XML tags, few-shot examples, and chain-of-thought reasoning.

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Speech API

Web Speech API Demo

Real-time speech-to-text recognition and multi-voice text-to-speech synthesis powered natively by your browser.

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System Inspector

Who Am I?

Inspect your browser fingerprint, IP address, WebGL renderer, hardware concurrency, storage quota, and device APIs.

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PWA / Offline

Service Worker Explorer

Learn Service Worker lifecycle, Cache Storage strategies, fetch interception, and offline PWA messaging interactively.

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Graph API

Facebook SDK Demo

Authenticate with Facebook OAuth 2.0 and inspect live Graph API feed responses using the official JavaScript SDK.

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