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⭐ 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. ⚡ 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. ✨ 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. 🧩 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. 🔁 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. 🔧 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.

👾 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.

🖥️ 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.

🏛️ 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:

🚀 Dual High-Performance Renderers

We offer two different renderers for integration into a variety of target environments.

🔒 Licensing

It's easy to license Ultralight in projects big and small.

👀 Getting the Latest SDK

You can get the latest SDK for each platform below (contact us for Xbox, PS4, and PS5):

• Windows | x64
• Linux | x64
• macOS | x64

Getting Archived Binaries for a Specific Commit

Pre-built binares are uploaded to the following S3 buckets every commit:

• Archived Binaries: https://ultralight-sdk.sfo2.cdn.digitaloceanspaces.com/

🛠️ Building the Samples

To build the samples in this repo, please follow the instructions here.

ℹ️ Useful Links