Free for the lighting & CAD community
Free Online Tools
Browser-based tools that run entirely in your browser. No software to install, no files uploaded — your data stays on your device.
Universal 3D Viewer
NewOne viewer for 17+ 3D formats — share links, embeddable iframe, export to GLB / OBJ / STL / PDF.
Jump to a specific format page(17 viewers + matching converters)
Supported 3D & CAD formats
- SKP.skp—Native SketchUp 3D models — all versions from SketchUp 3 through the current release.
- DWG.dwg—AutoCAD 2D and 3D drawings, including AEC entities, hatches, dimensions, and embedded SHX text.
- DXF.dxf—AutoCAD drawing exchange format — the open ASCII cousin of DWG, used everywhere CAD data is shared.
- STEP.step—ISO 10303 mechanical CAD assemblies with parts, colors, and the full product structure tree.
- Rhino.3dm—Rhinoceros NURBS models with layers, materials, and surface geometry — no Rhino license required.
- STL.stl—The de facto 3D-printing format — binary or ASCII, any size, opens before slicing.
- OBJ.obj—Wavefront OBJ — the universal mesh interchange format with materials and textures.
- GLB.glb—glTF Binary — the modern web 3D standard with PBR materials and KHR extensions.
- glTF.gltf—glTF JSON manifest and its sibling .bin and texture files — inspect the scene as text.
- FBX.fbx—Autodesk FBX — the long-time backbone of game-engine pipelines, both binary and ASCII.
- PLY.ply—Stanford PLY — photogrammetry scans, LiDAR point clouds, and triangulated meshes with vertex color.
- 3DS.3ds—Autodesk 3D Studio — the original chunked binary format, still common for legacy game and stock assets.
- 3MF.3mf—3D Manufacturing Format — the modern color-aware print format from Bambu, Prusa, OrcaSlicer, and Cura.
- COLLADA.dae—Khronos COLLADA — the open XML scene format used by Google Earth KMZ and legacy SketchUp exports.
- VRML.wrl—VRML / .wrl — the 1990s ISO Web3D format still exported by CATIA, NX, SolidWorks, Ansys, and COMSOL.
- X3D.x3d—Web3D Consortium X3D — VRML’s XML successor, used in biomedical, scientific, and museum 3D.
- IES.ies—IESNA LM-63 photometric files — light-source goniometer plots, beam analysis, iso-footcandle.
Lighting & Photometry
4 toolsCircadianLab
FreeCalculate melanopic lux (EML) for circadian lighting design. IES photometry, radiosity, WELL v2 compliance.
IES Viewer
FreeOpen IESNA LM-63 photometric files in your browser — 2D & 3D goniometer plots, beam analysis, iso-footcandle plot.
SPD Analyzer
FreeCompute melanopic / α-opic ratios per CIE S 026:2018, CCT, Duv, CRI from any TM-27 SPDX or CSV.
Daylight Calculator
NewHow much daylight reaches your room? Sun position, window contribution, mel-EDI, WELL L03 — for any city and time.
AutoCAD / DWG & 2D Drafting
4 toolsDWG Viewer
FreeOpen, measure, and print AutoCAD DWG files in your browser. No software, no signup.
DWG to PDF Converter
FreeConvert DWG drawings to PDF entirely in your browser. No upload required.
DXF Viewer
FreeOpen DXF CAD files in your browser. No download, no signup.
CAD Viewer Online
Free browser-based CAD file viewer.
SketchUp / SKP Tools
2 toolsSTEP / Mechanical CAD
2 toolsRhino / NURBS
2 tools3D & Mesh Formats
15 toolsSTL Viewer
NewView STL meshes in your browser — binary or ASCII, any size. Ideal for previewing 3D-print models before slicing.
STL Converter
NewConvert STL meshes to GLB, OBJ, or PDF. No upload, no signup.
OBJ Viewer
NewView Wavefront OBJ files with materials and textures. The universal mesh interchange format.
OBJ Converter
NewConvert Wavefront OBJ to GLB, STL, or PDF. No upload, no signup.
GLB Viewer
NewView glTF binary (.glb) files with full PBR materials. Same renderer as Google’s model-viewer.
glTF Viewer
NewView glTF JSON files in your browser. Inspect the manifest and preview the scene side-by-side.
GLB / glTF Converter
NewConvert GLB or glTF to OBJ, STL, or PDF. No upload, no signup.
FBX Viewer
NewView Autodesk FBX files. The backbone of game-engine asset pipelines.
FBX Converter
NewConvert FBX to GLB, OBJ, STL, or PDF. Useful for moving game-engine assets to the open web.
More 3D formats
All powered by the Universal 3D Viewer engine — same export, embed, and share features.
Documents & Media
2 toolsGuides
3 toolsView DWG on Any Device
3 toolsWhy We Built These Tools
Innerscene makes premium artificial skylights — Virtual Sun and Circadian Sky — that bring realistic daylight to windowless spaces.
We built these free tools to help architects, engineers, and designers who work with our product drawings — and to share useful utilities with the wider community. Every tool runs entirely in your browser — your files and recordings never leave your computer.
DWG is a trademark of Autodesk, Inc. SketchUp and SKP are trademarks of Trimble Inc. Innerscene is not affiliated with Autodesk or Trimble.