The W3C module allows you to compose an interactive 2D web interface on top of WebXR. See benefits, input conflicts and pattern maturity.

Direct answer

The WebXR DOM Overlays Module defines how a DOM element can appear as a transparent, interactive rectangle during an immersive session. The interface can continue to use HTML, CSS, pointer events, and web accessibility features, while a specific event separates UI actions from XR world interactions. As the API remains in Working Draft, support, overlay type and fallback need to be detected.

HTML reduces interface rework

Forms, buttons, text and states can take advantage of consolidated web practices. This accelerates enterprise tools where the 2D UI is as important as the 3D scene.

Overlay is above the scene

The browser renders the element as the top, transparent layer. This priority improves readability, but can block vision or interaction if it takes up too much area.

Input needs clear boundary

The beforexrselect event helps prevent a panel click from also activating a 3D object. Test pointer, touch, control, hand, keyboard and assistive technologies.

Fallback is a requirement

Devices can offer screen overlay, floating, head-worn, or none. The experiment must keep essential functions outside of the experimental feature.

Nexus Reading

DOM overlay connects web maturity to XR presence. The best use is functional: clear, accessible, lightweight controls without covering up the context that makes the spatial experience valuable.

FAQ

Is it possible to use normal CSS?

Yes, within the overlay element, respecting the behavior defined by the browser.

Can the panel be behind a 3D object?

The standard composes it as superior content; it must not be occluded by the XR scene.

Is the API stable?

No. It is Working Draft and requires support detection and fallback.

Essential guides to delve deeper into the decision

Pillar page

Virtual Reality for companies

Use cases and criteria to transform immersion into results.

Pillar page

Corporate VR Training

Scenarios, feedback, scoring and learning measurement.

Pillar page

WebAR or app?

Range, resources, performance and maintenance.

Pillar page

Immersive technology ROI

Framework to link investment to business indicators.

Pillar page

Checklist for XR pilot

Hypothesis, hardware, content, support and scaling decision.

Pillar page

Immersive technology in the automotive sector

Applications in sales, training, 3D and digital showrooms.

Primary sources and references

This editorial analysis was produced by Nexus from the official sources below, consulted on September 14, 2026. The text is original and interprets practical implications for companies.

Date reported by main source: Working Draft of September 24, 2024; analysis published on September 14, 2026.