Construction & Layout Editor — Free Browser-Based Architectural Drawing Tool
Design room layouts, HVAC maps, and architectural floor plans in your browser. Architectural symbols, precise coordinate system, metric and imperial measurement support. No AutoCAD, no install.
What you can design
Room layout and floor plan diagrams with accurate wall and door placement
HVAC ductwork routing maps for residential and light commercial systems
Architectural elevation drawings with dimension annotations
Furniture and fixture placement layouts for interior planning
Site plans with property boundaries, setbacks, and utility paths
Fire egress and safety exit maps with emergency symbol sets
Measurement and grid support
Metric grid: millimeters, centimeters, meters with snap-to-grid precision
Imperial grid: inches and feet with fractional snap increments
Scale ruler overlay for real-world dimension reference
Dimension annotation tool auto-calculates lengths from placed elements
Export options
SVG — clean vector output for printing or web embedding at any scale
PNG — rasterized export at configurable DPI
JSON — full scene graph for re-import or programmatic processing
Frequently asked questions
Can I switch between metric and imperial mid-drawing?
Yes. The unit system can be changed at any time from the canvas settings panel. Existing element dimensions are recalculated automatically.
Is this a replacement for AutoCAD or Revit?
No — it’s a lightweight browser-native drafting tool for early-stage layouts, quick diagrams, and documentation drawings. For construction-grade BIM files, you still need dedicated CAD software.
Does any data leave my machine?
No. All drawing and export processing runs entirely in your browser. Nothing is sent to a server. Drawings are stored locally in browser IndexedDB.