Impossible HTML Engine: A Unified Canvas–SVG–CSS Rendering Framework for Browser‑Native Simulation and Visualisation

The Impossible HTML Engine is a fully‑modular, browser‑native rendering framework that unifies Canvas, SVG, and CSS into a single coherent world‑space system. It treats the browser as a GPU‑like execution environment, allowing developers and researchers to build interactive simulations, visualisations, and experimental engines using nothing but standard web technologies. At its core, the engine provides a unified primitives API, a camera system that synchronises transforms across all layers, a scene lifecycle, a diagnostics suite, a plugin architecture, and a future‑proof systems layer (settings, input, save/load, event bus, module registry). Everything is designed to be hackable, transparent, and extensible. This release includes: A complete engine architecture (core loop, camera, scenes, unified rendering pipeline) A modular rendering stack (Canvas, SVG, CSS) A high‑level Primitives API for drawing across all layers A plugin system for extending primitives, effects, loaders, camera modes, and scene behaviour A diagnostics layer (FPS, module visibility, stress testing) A future‑proof systems layer (input manager, settings, save/load, event bus, module registry) A built‑in editor (scene graph viewer, inspector, asset browser) A complete documentation suite covering architecture, rendering, primitives, loop, scenes, extensions, roadmap, and philosophy A clean packaging layer for long‑term distribution and versioning The engine is intentionally simple, intentionally modular, and intentionally bold. It demonstrates that HTML, CSS, and SVG are not limitations — they are a rendering ecosystem. By unifying them, the Impossible HTML Engine shows how the browser can behave like a multi‑layer GPU, capable of hybrid raster/vector/DOM rendering in real time. This Zenodo deposit serves as a complete research artefact, containing the full engine, documentation, editor, diagnostics tools, and packaging metadata. It is suitable for citation, replication, extension, and long‑term archival. HTML was never meant to do this. That’s exactly why it works. +Comes with Demos