View and inspect IFC and BIM models directly in your browser with the free crais Viewer. No installation, no sign-up, no server uploads. Model data stays on your device. Built by users for users, it is completely free and optimized for high performance.
Load and merge several IFC models into one scene, for example architecture, structural and building services models. Rendering techniques from the gaming industry keep navigation smooth, even with a huge number of model elements.
Three navigation modes (Orbit, Fly and Drone) cover everything from an outside overview to moving through the building and large infrastructure models. Switch between perspective and orthographic projection, jump to the top or bottom view or a view from any plane, and zoom to the whole model or the selection. The controls work with mouse, keyboard, touch and pen, and the interface adapts to desktop, tablet and smartphone.
Three model trees make building elements easy to find: Relations shows the spatial IFC hierarchy, Types groups elements by IFC class and type, and Storeys groups the floors of all loaded models. Select elements with a click, with Ctrl for multiple elements, or with a selection rectangle. The element information shows attributes, property sets, quantities, materials and relations of the selected element.
Measure lengths, areas and volumes directly on the model geometry. Snapping to points, edges and faces makes measurements precise, and multiple area or volume measurements are summed up automatically.
A click on a component face places a clipping plane that can be moved freely. The clipping box combines six planes to narrow down an area. Isolate, hide and show elements from the 3D scene or the model trees, and toggle spaces and openings separately.
Show the model in its original colours or as a white paper model, with outlines for readable edges and ambient occlusion for more depth.
Create and edit BCF topics (BIM Collaboration Format) with comments, viewpoints and snapshots, sketch on snapshots and pin topics to the exact spot in the model. The BCF management table filters and sorts all topics. Import and export BCF files to exchange issues with other BIM software.
Model data is processed exclusively in your browser and never leaves your device. There is no upload to crais or third parties and no registration.
The crais Viewer runs in any modern browser with WebGL2 support on desktop, tablet and smartphone, in English and German, with light and dark mode. It is developed by crais GmbH in Vienna, Austria.
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