A-Frame vs AR.js
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A web framework for building browser-based 3D, AR and VR experiences using HTML.
Open source · MIT
A JavaScript library for marker-based and location-based augmented reality in web pages.
The short answer
Choose A-Frame if you need…
- Web developers who want to add 3D or VR scenes to a website
- Educators and artists experimenting with immersive content in the browser
- Beginners comfortable with basic HTML who want a gentle entry into 3D
- Developers who want to extend scenes with JavaScript components and community add-ons
Choose AR.js if you need…
- Developers who want to add simple AR experiences to a website
- Teams already using A-Frame or Three.js who want AR in the browser
- People building marker-based AR demos that run without a native app
- Developers who need location-based AR features in a web page
Side-by-side
| A-Frame | AR.js | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 17.7k | 15.8k |
| Setup difficulty | Beginner | Intermediate |
| How you get it | Install with a package manager | See the README |
| Main language | JavaScript | HTML |
| Last code update | 4 months ago | 4 years ago |
What each one is
A-Frame
A-Frame is a web framework that lets you build 3D, AR and VR scenes in a browser by writing HTML tags such as a-box and a-sphere. It sits on top of three.js and WebXR, so the same page can run on desktop, phones and VR headsets that support WebXR. People use it to make interactive 3D experiences without writing low-level graphics code.
AR.js
AR.js is a free, open-source JavaScript library for adding augmented reality to web pages, so that virtual objects appear over a phone or laptop camera view. The README describes it as supporting marker-based and location-based AR. It is typically used together with web 3D tools such as A-Frame and Three.js, which are listed as topics of the project. The README also says the project has moved to a new GitHub organization, and this copy will no longer be updated.
Best for
A-Frame
- Web developers who want to add 3D or VR scenes to a website
- Educators and artists experimenting with immersive content in the browser
- Beginners comfortable with basic HTML who want a gentle entry into 3D
- Developers who want to extend scenes with JavaScript components and community add-ons
AR.js
- Developers who want to add simple AR experiences to a website
- Teams already using A-Frame or Three.js who want AR in the browser
- People building marker-based AR demos that run without a native app
- Developers who need location-based AR features in a web page
Strengths
A-Frame
- Simple declarative HTML syntax lowers the barrier to building 3D scenes
- Built on three.js and WebXR, with access to raw JavaScript and WebGL when needed
- Works on desktop and smartphones even without a headset
AR.js
- Open source under the MIT license
- Designed for browsers, so users do not need to install a native app, per the description
- Supports both marker-based and location-based AR, according to the README
Not ideal for
A-Frame
- Teams needing a full game engine with a visual editor, since the README focuses on code and HTML rather than editor tooling
- Projects that must run on native apps or consoles, since it targets browsers with WebXR support
- Anyone needing heavy, high-fidelity 3D performance at the level of dedicated native engines, as it is a thin layer over three.js
AR.js
- Anyone who needs the actively maintained version, because the README says this repository will not be updated and points to a new repository
- Projects needing image tracking from this repo, since the README says that feature is on the new repository
- Non-developers looking for a ready-made app, since this is a code library
Trade-offs
A-Frame
- Depends on browser WebXR support, so headset features vary by device and browser
- Testing in VR on a headset requires running a local HTTPS server and a third-party service described in the README
- Community components are separate projects whose quality and maintenance vary
AR.js
- The README says this repository is no longer updated and development has moved elsewhere
- The last push in the provided metadata is from December 2022, so the code may be out of date
- Setup details and examples are not included in the truncated README, so the exact steps are unclear
Getting started
A-Frame
Install from npm
npm install --save aframeClone the repository for local development
git clone https://github.com/aframevr/aframe.gitAR.js
Clone the repository
git clone https://github.com/jeromeetienne/AR.jsFrequently asked questions
What is the difference between A-Frame and AR.js?
A-Frame: A web framework for building browser-based 3D, AR and VR experiences using HTML. AR.js: A JavaScript library for marker-based and location-based augmented reality in web pages. A-Frame suits web developers who want to add 3d or vr scenes to a website, while AR.js suits developers who want to add simple ar experiences to a website.
Are A-Frame and AR.js free?
A-Frame: Free and open source. AR.js: Free and open source.
Which is easier to set up, A-Frame or AR.js?
A-Frame is easier to get started with (rated beginner); AR.js is rated intermediate and usually needs more setup.
Is A-Frame or AR.js more popular?
A-Frame has more GitHub stars (17.7k) than AR.js (15.8k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to A-Frame and AR.js?
Other options people compare them with include three.js, react-three-fiber, Jolt Physics.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.