See how Needle, <model-viewer>, and Unreal Engine compare across key features and capabilities for usage on the web and creating XR experiences for designers, developers and teams.
View all platform comparisonsWeb-first runtime integrated with Unity and Blender plugins, complemented by Needle Cloud for optimization and hosting. Needle | ![]() A Google-developed web component for easily embedding interactive 3D models (glTF/GLB) and AR experiences into HTML pages. <model-viewer> | ![]() High-fidelity engine primarily for native games/apps. Web strategy focuses on Pixel Streaming (server-side rendering) or exporting assets (glTF) for use in other web engines. Unreal Engine | |
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Core Platform & Workflow | |||
Solution Type | 3D Engine Cloud Platform Optimization Tool Web Component Needle Solution Type:
3d-engine, cloud-platform, authoring-tool, optimization-tool, web-component A comprehensive suite including a runtime engine, cloud services for optimization/hosting, authoring via Unity/Blender plugins, and embeddable web component output. | Web Component <model-viewer> Solution Type:
web-component A custom HTML element (<model-viewer>) designed for simple 3D model display and AR. | Unreal Engine Solution Type:
authoring-tool Primarily an authoring tool for creating experiences delivered via Pixel Streaming. No longer supports direct WebGL/Wasm client export. |
Made for the web | Needle Made for the web:
Yes Built from the ground up for the web, focusing on fast loading, efficient rendering, and cross-platform web deployment. | <model-viewer> Made for the web:
Yes Focuses on ease of use, optimized loading (lazy loading, poster), and performance for web display. | Unreal Engine Made for the web:
No A high-end engine designed for native performance. Web deployment relies on asset export or streaming. |
Typical Workflows | Unity Editor Blender Editor Code HTML Asset Upload Needle Typical Workflows:
Unity Editor, Blender Editor, Code, HTML, Asset Upload Primary workflow involves using Unity or Blender as the authoring environment, exporting scenes and logic. Custom scripts (TypeScript/JavaScript) extend functionality. | HTML <model-viewer> Typical Workflows:
HTML Used by adding the `<model-viewer>` tag to an HTML page and configuring via attributes. | Standalone Editor Visual Scripting Code Unreal Engine Typical Workflows:
Standalone Editor, Visual Scripting, Code Content creation uses the Unreal Editor with Blueprints (visual scripting) or C++. |
Use with Unity | Needle Use with Unity:
Yes Deep integration with Unity Editor via dedicated plugin, allowing export of scenes, C# scripts (transpiled), materials (Shader Graph), animations, and components. | <model-viewer> Use with Unity:
No Consumes glTF files, which can be exported from Unity. | Unreal Engine Use with Unity:
No Separate engine. |
Use with Blender | Needle Use with Blender:
Yes Integration with Blender via addon, supporting export of scenes, materials, animations, and custom logic nodes. | <model-viewer> Use with Blender:
No Consumes glTF files, which can be exported from Blender. | Unreal Engine Use with Blender:
No Separate engine. |
Interactivity Building Blocks | Needle Interactivity Building Blocks:
Yes Includes a rich set of components for common interactions, animations, and UI elements. | <model-viewer> Interactivity Building Blocks:
No Provides built-in features for model display, camera controls, and AR placement, but not for broader interactivity. | Unreal Engine Interactivity Building Blocks:
No Components can be created via scripting, but there is no built-in library of interactivity components. |
Extensible with Coding | Needle Extensible with Coding:
Yes Uses TypeScript with full IDE support in both Unity and standalone projects. | <model-viewer> Extensible with Coding:
No Allows for JavaScript event handling and basic property manipulation via API, but not for extending core functionality. | Unreal Engine Extensible with Coding:
Yes Blueprints visual scripting and C++. |
Engine Capabilities | |||
Physically-Based Rendering | Needle Physically-Based Rendering:
Yes Supports Physically Based Rendering (PBR), custom shaders (via Unity Shader Graph export), lighting, and post-processing effects. | Limited <model-viewer> Physically-Based Rendering:
Limited Supports PBR materials, environment maps, and basic lighting/shadow options, but no control over per-object shadows, reflection probes, lightmaps or other advanced rendering features. | Unreal Engine Physically-Based Rendering:
Yes High-end rendering capabilities (Nanite, Lumen, PBR) for desktop and high-performance mobile devices. |
Component System | Needle Component System:
Yes Leverages the component-based architecture of Unity/Blender, extended with custom web-specific components. | <model-viewer> Component System:
No Internal structure, not exposed as an ECS. | Unreal Engine Component System:
Yes Uses the Actor-Component model. |
Built-in Networking | Needle Built-in Networking:
Yes Built-in real-time networking for multiplayer and collaborative applications. | <model-viewer> Built-in Networking:
No Not designed for networked experiences. | Unreal Engine Built-in Networking:
Yes Pixel Streaming is fundamentally a networking solution. Unreal Engine has robust native networking. |
Timelines and Sequencing | Needle Timelines and Sequencing:
Yes Supports timeline-based sequencing, complex animations, animator state machines, blending, and more. | <model-viewer> Timelines and Sequencing:
No Can play animations embedded in glTF but has no built-in sequencing system. | Unreal Engine Timelines and Sequencing:
Yes Comprehensive Sequencer timeline system for cinematic sequences and complex animation control. |
Animation Controls | Needle Animation Controls:
Yes Supports complex animations authored in Unity (Animator, Timeline) or Blender and exports them for the web. | <model-viewer> Animation Controls:
Yes Can play animations embedded within the loaded glTF model. | Unreal Engine Animation Controls:
Yes Supports complex animations. |
Animated Materials | Needle Animated Materials:
Yes Supports material animations, shader graph, and procedural material effects. | <model-viewer> Animated Materials:
No Supports materials in the glTF, including basic animation defined in the model, but no dynamic material creation or animation. | Unreal Engine Animated Materials:
Yes Advanced material system with dynamic parameters, material instances, and material functions. |
Audio Playback | Needle Audio Playback:
Yes Supports spatial audio configured via Unity/Blender components. | <model-viewer> Audio Playback:
No Does not have built-in audio features. | Unreal Engine Audio Playback:
Yes Audio features are part of the engine. |
Video Playback | Needle Video Playback:
Yes Supports video textures and playback controlled via components. | <model-viewer> Video Playback:
No Does not directly support video textures. | Unreal Engine Video Playback:
Yes Supported within the streamed Unreal application. |
Physics Integration | Needle Physics Integration:
Yes Integrates with physics engines, configured via Unity/Blender components. | <model-viewer> Physics Integration:
No Focuses on model display, does not include physics. | Unreal Engine Physics Integration:
Yes Physics simulation is part of the engine but not exported via glTF. |
glTF 3D Support | Excellent Needle glTF 3D Support:
Excellent Uses glTF as its core runtime format and supports import of various formats (FBX, USD, VRM etc.) which are converted. | <model-viewer> glTF 3D Support:
Yes Designed specifically for loading and displaying glTF 2.0 models. | Unreal Engine glTF 3D Support:
Yes Provides an official importer and exporter for glTF assets. |
Custom User Interfaces | Needle Custom User Interfaces:
Yes Facilitates creation of UI using standard HTML/CSS and frontend frameworks, integrated with the 3D scene. | <model-viewer> Custom User Interfaces:
No Provides basic interaction controls (orbit, pan, zoom) and hotspots. Customization primarily via HTML/CSS/JS API. | Unreal Engine Custom User Interfaces:
Yes Features the UMG UI Designer. |
Web Integration & Deployment | |||
Web Component | Needle Web Component:
Yes Exports projects as standard web components (<needle-engine> tag) for easy embedding into any HTML page or web application. | <model-viewer> Web Component:
Yes It is fundamentally a web component. | Unreal Engine Web Component:
No Pixel Streaming requires a custom client player. |
PWA Support | Needle PWA Support:
Yes Being web-native, Needle Engine projects can be easily included in Progressive Web Apps for offline capabilities and installation. | <model-viewer> PWA Support:
No Can be included in Progressive Web Apps but provides no specific PWA features itself. | Unreal Engine PWA Support:
No Not supported. |
HTML/CSS Integration | Excellent Needle HTML/CSS Integration:
Excellent Designed to seamlessly integrate with HTML, CSS, and frontend frameworks (React, Vue, Svelte etc.), allowing blending of 2D UI and 3D content. | Excellent <model-viewer> HTML/CSS Integration:
Excellent Designed specifically for seamless integration into standard HTML pages. | Unreal Engine HTML/CSS Integration:
No Pixel Streaming client allows some UI customization and JS interaction, but doesn't contain features to make this easy. |
Host Anywhere | Needle Host Anywhere:
Yes The core runtime can be self-hosted on any static server. Needle Cloud features (optimization, hosting, analytics) require the cloud service. | <model-viewer> Host Anywhere:
Yes Requires only static hosting for the component and model files. | Unreal Engine Host Anywhere:
No Pixel Streaming requires significant server infrastructure (GPU instances). glTF export requires only static hosting for assets. |
Asset Hosting | Needle Asset Hosting:
Yes Needle Cloud provides managed hosting and CDN delivery for optimized assets. | <model-viewer> Asset Hosting:
No Requires external hosting for the glTF/GLB model files. | Unreal Engine Asset Hosting:
No Requires external hosting. |
App Hosting | Needle App Hosting:
Yes Needle Cloud provides managed hosting and CDN delivery for optimized applications. | <model-viewer> App Hosting:
No Requires external hosting for the HTML page and model files. | Unreal Engine App Hosting:
No Requires external hosting. |
Performance & Optimization | |||
Engine Size | Medium Needle Engine Size:
Medium Optimized runtime aims for minimal footprint, size depends on included features. | Small <model-viewer> Engine Size:
Small Relatively lightweight as it bundles a subset of three.js. | Large Unreal Engine Engine Size:
Large Not applicable for client-side web builds. |
Loading Performance | Excellent Needle Loading Performance:
Excellent Rapid development cycles and fast loading times through optimized runtime and asset handling. | Fast <model-viewer> Loading Performance:
Fast Implements strategies like lazy loading and posters for optimized loading experience. | Low Unreal Engine Loading Performance:
Low Pixel Streaming load time involves connecting to the server. |
Runtime Performance | Excellent Needle Runtime Performance:
Excellent Designed for efficient rendering performance across desktop, mobile, and XR devices. | Good <model-viewer> Runtime Performance:
Good Offers good performance for its primary use case of displaying and interacting with single models. | High (Streaming) Unreal Engine Runtime Performance:
High (Streaming) glTF performance depends on target engine. Pixel Streaming performance is high (server-rendered) but subject to network latency. |
Smart Asset Optimization | Excellent Needle Smart Asset Optimization:
Excellent Needle Cloud provides significant automated optimization: LOD generation, mesh optimization, extensive texture compression (Basis Universal, WebP, JPG, PNG) and resizing options. | <model-viewer> Smart Asset Optimization:
Yes Handles progressive loading and encourages use of optimized formats like Draco and Basis Universal textures. | Unreal Engine Smart Asset Optimization:
Yes Features like Nanite/Lumen can pre-process assets. glTF exporter offers texture control. |
Mesh and Texture LODs | Excellent Needle Mesh and Texture LODs:
Excellent Supports automatic mesh simplification, level-of-detail generation and automatic texture compression with multiple quality levels. | <model-viewer> Mesh and Texture LODs:
No Relies on optimization being done in the source glTF file; no dynamic LOD system. | Unreal Engine Mesh and Texture LODs:
Yes Robust LOD system for both meshes and textures with automatic generation options. |
XR Support (AR/VR/Spatial) | |||
VR Support (WebXR) | Needle VR Support (WebXR):
Yes Supports VR headsets via the WebXR standard. | Limited <model-viewer> VR Support (WebXR):
Limited Supports viewing models in VR via WebXR, without interactivity. | Unreal Engine VR Support (WebXR):
No Very limited experimental support. |
AR Support (WebXR) | Needle AR Support (WebXR):
Yes Supports markerless WebAR on compatible Android devices via the WebXR standard. | Limited <model-viewer> AR Support (WebXR):
Limited Provides an AR button for viewing models in AR on compatible Android devices (via WebXR), without interactivity. | Unreal Engine AR Support (WebXR):
No Not supported. |
AR Support (iOS) | Needle AR Support (iOS):
Yes Supports interactive markerless WebAR on iOS devices via WebXR. | Limited <model-viewer> AR Support (iOS):
Limited Provides an AR button for viewing static models in AR on iOS using Apple's AR Quick Look. | Unreal Engine AR Support (iOS):
No Not supported. |
AR Support (visionOS) | Needle AR Support (visionOS):
Yes Explicit support for creating spatial computing experiences deployable on visionOS. | Limited <model-viewer> AR Support (visionOS):
Limited Provides an AR button for viewing static models in AR on iOS using Apple's AR Quick Look. | Unreal Engine AR Support (visionOS):
No Pixel Streaming is a potential path. Native visionOS support exists. |
AR Tracking Types | Surface Image Needle AR Tracking Types:
Surface, Image Supports World Tracking via the WebXR standard on compatible devices. Image tracking is supported on iOS AR but requires a device-specific flag for Android AR. | Surface <model-viewer> AR Tracking Types:
Surface Supports World Tracking via WebXR (Android) and surface placement via AR Quick Look (iOS). | Unreal Engine AR Tracking Types:
No AR tracking would need to be handled by the custom Pixel Streaming client application. |
Ecosystem & Support | |||
Official Support Availability | Needle Official Support Availability:
Yes Dedicated support available for licensed users. | <model-viewer> Official Support Availability:
No Support primarily through GitHub issues and community channels. | Unreal Engine Official Support Availability:
Yes Paid support and enterprise options available. |
Learning Resources | Needle Learning Resources:
Yes Extensive documentation, tutorials, live samples, and active community support. | Good <model-viewer> Learning Resources:
Good Excellent documentation site serves as the primary learning resource. | Unreal Engine Learning Resources:
Yes Vast library of learning content on the Epic Developer Community and elsewhere. |
License | Commercial Needle License:
Commercial Commercial license required for full features and deployment. Free evaluation available. | Open Source | Commercial Unreal Engine License:
Commercial Free to use up to a revenue threshold, then royalty-based or custom licensing. |