[Website](https://ultralig.ht) | [Chat on Discord!](https://chat.ultralig.ht) | [Browse C++ API](https://ultralig.ht/api/cpp/1_3_0/) | [Browse C API](https://ultralig.ht/api/c/1_3_0/) | [Support Docs](https://docs.ultralig.ht) | [Twitter](https://twitter.com/ultralight_ux) ## :video_game: Discord Chat Got a question about Ultralight? [Chat with us on Discord! ](https://chat.ultralig.ht) # :star: About Ultralight makes it easy for C/C++ developers to seamlessly integrate web-content into games and desktop apps. Use our lightweight, high-performance renderer to display HTML/JS/CSS on a variety of platforms and hardware targets. ## Key Features

1. :zap: Modern HTML/JS/CSS Support:

Based on WebKit, Ultralight enjoys many of the same cutting-edge web features as Apple's Safari browser, simplifying development and reducing production costs.

2. :sparkles: Powerful and Lightweight:

Thanks to its highly-customizable CPU and GPU renderers, Ultralight offers developers unprecedented control over performance and memory usage-- making it the go-to choice for users who demand speed in constrained environments.

3. :jigsaw: Cross-Platform Compatibility:

With support for Windows, macOS, Linux, Xbox, PS4, and PS5 (and ARM64 coming in 1.4), Ultralight ensures your content displays smoothly and consistently on a wide range of platforms and hardware targets.

4. :repeat: Deep C/C++ and JavaScript Integration:

Ultralight facilitates seamless C/C++ and JavaScript integration through direct access to the JavaScriptCore API. Expose native state to web pages, extend JavaScript classes, define C/C++ callbacks, and more.

5. :wrench: Low-Level Customization:

Ultralight allows developers the ability to override platform-specific functionality-- granting control over such things as file-system access, clipboard management, font loading, and more to suit the unique needs of each target environment.

## :space_invader: For Game Developers Developed in collaboration with top AAA game studios, Ultralight is engineered to display high-performance web-content across a diverse set of hardware targets and game engine environments. Choose between our CPU renderer for fast, reliable rendering or our customizable GPU renderer for unparalleled animation performance. __→ Learn more by visiting our [Game Integration Guide](https://docs.ultralig.ht/docs/integrating-with-games).__ ## :desktop_computer: For Desktop-App Developers Get the best of both worlds-- save time by building your front-end with HTML/CSS/JS while retaining the power and performance of C/C++. Embed the renderer directly within your existing run loop or leverage our AppCore framework to do all the heavy lifting for you, offering convenient native window management and accelerated rendering. __→ Learn more by visiting our [Desktop App Guide](https://docs.ultralig.ht/docs/writing-your-first-app).__ ## :classical_building: Architecture Ultralight is a platform-agnostic port of WebKit for games and desktop apps. Portions of the library are open-source, here's how the library is laid out: | | Description | License | Source Code | |--------------------|------------------------------------------|-------------|--------------------------| | __UltralightCore__ | Low-level graphics renderer | Proprietary | (Available with license) | | __WebCore__ | HTML layout engine (WebKit fork) | LGPL/BSD | [ultralight-ux/WebCore](https://github.com/ultralight-ux/WebCore) | | __Ultralight__ | View, compositor, and event logic | Proprietary | (Avaiable with license) | | __AppCore__ | :sparkles: Optional, desktop app runtime | LGPL | [ultralight-ux/AppCore](https://github.com/ultralight-ux/AppCore) | ### :rocket: Dual High-Performance Renderers We offer two different renderers for integration into a variety of target environments.

:sparkle: CPU Renderer	:eight_spoked_asterisk: GPU Renderer
* Fast, lightweight, and easy to integrate. * Renders to a 32-bit BGRA pixel buffer. * Based on Skia, accelerated via multi-threaded SIMD. * See the [Game Integration Guide](https://docs.ultralig.ht/docs/integrating-with-games) for more info.	* High-performance, customizable, and portable. * Renders on the GPU to a texture. * Accelerated via tesselated geometry and pixel shaders. * See [Using a Custom GPUDriver](https://docs.ultralig.ht/docs/using-a-custom-gpudriver) for more info.

## :lock: Licensing It's easy to license Ultralight in projects big and small.

:heart_eyes: Free License	:crown: Commercial License
* __Free__ for non-commercial use. * __Free__ for commercial use by indie companies (< $100K annual revenue). * Full SDK available for all users, download and try now. * See [LICENSE.txt](license/LICENSE.txt) for more info.	* Paid licenses for commercial use. * Enterprise licensing, custom contracts, and volume discounts available. * Performance tools, extra configurations, and source code. * See [our website](https://ultralig.ht) for more info.

## :eyes: Getting the Latest SDK You can get the latest SDK for each platform below (contact us for Xbox, PS4, and PS5): * [Windows | x64](https://ultralight-sdk.sfo2.cdn.digitaloceanspaces.com/ultralight-sdk-latest-win-x64.7z) * [Linux | x64](https://ultralight-sdk.sfo2.cdn.digitaloceanspaces.com/ultralight-sdk-latest-linux-x64.7z) * [macOS | x64](https://ultralight-sdk.sfo2.cdn.digitaloceanspaces.com/ultralight-sdk-latest-mac-x64.7z) ### Getting Archived Binaries for a Specific Commit Pre-built binares are uploaded to the following S3 buckets every commit: * __Archived Binaries__: ## :hammer_and_wrench: Building the Samples To build the samples in this repo, please [follow the instructions here](https://docs.ultralig.ht/docs/trying-the-samples). ## :information_source: Useful Links | Link | URL | | -------------------------- | --------------------------------------------------- | | __Join our Discord!__ | | | __Docs / Getting Started__ | | | __Browse C++ API__ | | | __Browse C API__ | | | __Follow Us on Twitter__ | |