Free CAD, 3D, map and design tools
View CAD drawings, 3D models, medical scans, GPS routes and fonts, and make diagrams, QR codes and barcodes, in your browser.
Drawings, models, scans and routes tend to come in formats only expensive or specialist software opens: a DWG from an architect, a STEP file from a supplier, a CD of scans from a hospital, a .fit file from a watch. These viewers open them in your browser, on any computer, with nothing uploaded.
The DWG and DXF Viewer opens CAD drawings without AutoCAD - layers, measurements and all - and converts DWG to DXF. The 3D Model Viewer opens GLB, GLTF, FBX, OBJ, STL, PLY, 3MF and DAE models and converts them to GLB, STL, OBJ or USDZ, the SketchUp Viewer opens .skp models and converts them to GLB, OBJ or STL, and the STEP & IGES Viewer opens the CAD models engineers swap between SolidWorks, Fusion 360 and the rest, with its assembly tree and a conversion to STL. The DICOM Viewer shows the CT, MRI and X-ray scans a hospital hands over on a disc, slice by slice.
The GPX Viewer maps tracks off a watch or handheld GPS, along with KML, KMZ, GeoJSON and shapefiles, and the FIT Viewer opens the activity files Garmin, Wahoo and Coros devices record, with heart rate, pace and laps. Both draw their map from OpenStreetMap tiles, which tells openstreetmap.org the area being shown; untick the map to avoid that.
For making things, the Diagram Toolkit draws Mermaid diagrams from text, Board Studio is a drag-and-drop whiteboard for when the diagram has no regular structure, the QR Code Generator & Scanner makes codes for a URL, a Wi-Fi network or a contact card, and the Barcode Generator covers EAN, UPC, Code 128 and more. The Font Viewer shows a font's glyphs, metrics and the embedding permissions recorded inside it, the Font Converter turns fonts between TTF, OTF, WOFF and WOFF2, and the Color Converter moves a colour between HEX, RGB and HSL, builds palettes and checks text contrast against WCAG. All free, with no account.
- DWG & DXF ViewerOpen a DWG or DXF drawing in your browser without AutoCAD: switch layers, measure distances, save it as SVG or convert DWG to DXF. Nothing is uploaded.
- 3D Model Viewer & ConverterOpen GLB, GLTF, FBX, OBJ, STL, PLY, 3MF and DAE models in your browser, orbit and zoom, and convert them to GLB, STL, OBJ or USDZ. Nothing is uploaded.
- SketchUp ViewerOpen a SketchUp .skp file in your browser, no SketchUp or account needed. Switch tags on and off; save as GLB, OBJ, STL, DXF or IFC. Nothing is uploaded.
- STEP & IGES ViewerOpen a STEP, STP or IGES CAD file in your browser, no CAD software needed. Hide or isolate parts and convert to STL, OBJ or GLB. Nothing is uploaded.
- DICOM ViewerView CT, MRI, X-ray and ultrasound scans from a hospital CD in your browser: scroll through slices, adjust contrast, read the tags. Nothing is uploaded.
- GPX ViewerMap a GPX, KML or TCX track, a Google Earth KMZ, GeoJSON or a shapefile, with distance, ascent and attributes, and export GeoJSON. Nothing is uploaded.
- FIT ViewerOpen a .fit activity from a Garmin, Wahoo or Coros device: route map, heart rate, pace, power and laps, and convert it to GPX or CSV. Nothing is uploaded.
- Diagram ToolkitFree online Mermaid editor. Turn text into flowcharts, sequence, class, state, ER and Gantt diagrams with a live preview, then export SVG or PNG.
- Board StudioA free whiteboard for diagrams and planning. Drop boxes, ellipses and sticky notes, link them with arrows, and save PNG, SVG or JSON in your browser.
- QR Code Generator & ScannerMake a QR code for a URL, text, Wi-Fi or a contact card, add a logo, and export PNG or SVG. It also reads a code from an image. Nothing is uploaded.
- Barcode GeneratorGenerate EAN-13, UPC-A, Code 128, Code 39, ITF-14 and more, then export as SVG or high-resolution PNG. Runs in your browser with nothing uploaded.
- Font ViewerOpen a TTF, OTF, WOFF or WOFF2 font to see its glyphs, metrics and embedding licence, with a live type sample. Nothing is uploaded, no sign-up.
- Font ConverterConvert fonts between TTF, OTF, WOFF and WOFF2 in your browser: OTF to TTF with real TrueType outlines, WOFF2 to an installable font. Nothing is uploaded.
- Color ConverterConvert a colour between HEX, RGB and HSL, build tints and palettes, and check text contrast against WCAG AA and AAA. Runs in your browser.