Draw shapes. Push them into 3D. Apply materials. Export. Sketch3D is a lightweight SketchUp-style design tool that runs entirely in your browser.
From 2D sketching to solid modeling, materials, and export — all built on Three.js with a SketchUp-inspired workflow.
Rectangle, Circle, Polygon, Arc, and freeform Curves. Draw on the ground or directly on any face.
R C G A SDraw edges that automatically detect closed loops and create faces. Split existing faces by drawing across them.
LClick any face and drag to extrude it into a 3D solid. Push through to punch holes. Snap to parallel faces.
PSweep a profile face along a path of edges. Create cornices, moldings, pipes, and complex extrusions.
HSpin a profile face around an axis to create surfaces of revolution — vases, spheres, columns, and more.
J50+ PBR materials from Poly Haven. Adjust metalness, roughness, opacity. Eyedropper to sample colors.
BCreate an inset copy of a face boundary at a specified distance. Perfect for walls, frames, and inlays.
FRound corners with radius arcs or cut 45-degree chamfers. Refine your geometry with CAD-standard operations.
K DDownload your models as Wavefront OBJ or ASCII STL. Compatible with Blender, Fusion 360, and 3D printers.
Use Rectangle, Circle, Polygon, or Line to draw a 2D face on the ground plane or on any existing surface.
Select Push/Pull and click any face. Drag up or down to extrude it into a solid. Type a number for precision.
Draw on faces to split them. Use Offset for insets. Apply Fillet/Chamfer. Sweep profiles with Follow Me.
Paint faces with PBR materials. Use AI Render for photorealistic previews. Export as OBJ or STL.
Try each tool right here. These mini canvases let you practice the core workflow before opening the full app.
Click and drag on the canvas to draw a rectangle. In the full app, you can also draw circles, polygons, arcs, and freeform curves.
Click on the blue face and drag upward to extrude it into a 3D box. This is the core of the SketchUp-style workflow.
Draw a shape directly on an existing face to split it. Then push/pull the inner piece to carve windows, add details, or subtract geometry.
Click on any face to paint it with the selected color. The full app includes 50+ PBR materials with metalness, roughness, and texture support.
Every tool has a single-key shortcut. No modifiers needed — just press and go.
Every tool at your disposal, with usage details and keyboard shortcuts.
Click to select faces or edges. Shift+click for multi-select. Drag to move selected objects. Marquee drag to box-select.
Click to place edge vertices. Closed loops auto-create faces. Drawing across a face splits it. Snaps to vertices, edges, and midpoints.
Click-drag to draw a rectangle. Drawing on an existing face auto-splits it. Snaps to face vertices and grid.
Click for center, drag for radius. Creates a 24-sided polygon approximation. Type a radius for exact sizing.
Click for center, drag for radius. Creates a regular polygon. Scroll wheel adjusts the number of sides (3-24).
3-click arc: two endpoints, then a bulge point. Creates a circular segment face with chord closure. 12 segments.
Click to place Catmull-Rom spline control points. Close near the first point or press Enter. 8 subdivisions per segment.
Click a face and drag to extrude. Push through coplanar faces to punch holes. Snaps to parallel face distances. Type a number for precision.
Click a face or edge and drag to move it. Also available from Select tool — drag any selected object directly.
3-click rotation: select face, pick center, pick reference angle, then rotate. Protractor visual. Snaps to 15-degree increments.
Click a face, then move mouse to set inward offset distance. Click to apply. Creates inset face via polygon bisector offset.
Click to delete edges (and their dependent faces) or standalone faces. Edges have priority over faces, like SketchUp.
Click faces to apply the selected color or material. Alt+click to sample (eyedropper). Fills empty hole areas. Floating palette.
Click a face as profile, click edges to build a sweep path, press Enter to execute. Creates cornices, pipes, and moldings via parallel-transport frame.
Click a face as profile, then click 2 points to define the axis. Auto-executes 360-degree revolution with 24 steps. Creates vases, spheres, columns.
Click an edge to round it with a radius arc. Standard CAD fillet operation for smoothing sharp corners.
Click an edge to cut a 45-degree bevel. Standard CAD chamfer for creating angled transitions at corners.
Draw a rectangle on the viewport, choose a theme (interior, exterior, etc.), add annotations, and render a photorealistic image via AI.
Skip the ray tracing setup. Sketch3D uses Google Gemini to transform your wireframes into photorealistic images in seconds — no lighting rigs, no materials library, no render farm.
Traditional renderers simulate light rays bouncing off surfaces. Sketch3D takes a completely different approach — it describes the photograph you want, then lets AI generate it. The result: magazine-quality images from rough 3D sketches.
Activate the Render tool, then click-drag a rectangle on the viewport to define what gets rendered.
Choose Interior, Exterior, or Object. Then select from 21 curated photography themes — each with professional prompt engineering.
Click any object to name it and describe its material in plain English. The AI uses your annotations for precise material placement.
Hit Render. Gemini generates a photorealistic image in seconds, streamed live to your viewport via SSE.
Each theme is a complete photography brief — camera, lens, lighting, atmosphere, color grading — all tuned for maximum realism.
Clean lines, concrete, marble, soft daylight. Canon 5D IV, 24mm f/2.8 wide-angle.
Light oak, linen textures, northern light. Sony a7R IV, 35mm f/1.8.
Exposed brick, steel beams, Edison bulbs. Canon 24mm f/1.4L cinematic.
Brass inlays, velvet, crystal chandeliers. 85mm portrait lens, rich bokeh.
Cypress wood, tatami, shoji screens. 24mm f/8, deep focus, meditative.
Terracotta, wrought iron, golden hour. 35mm lens, warm afternoon light.
Teak furniture, retro palette, Kodachrome tones. 50mm, shallow DOF.
Layered textiles, rattan, warm fairy lights. 35mm, warm color grading.
Glass facade, blue hour, reflecting pool. Zeiss 24mm Distagon, long exposure.
Limestone columns, formal gardens, golden light. Tilt-shift perspective control.
Thatched roof, infinity pool, sunset glow. 16mm wide panoramic.
City skyline, rooftop terrace, dusk light. 24mm f/4, cinematic contrast.
Timber lodge, stone chimney, alpine twilight. 35mm f/5.6 golden hour.
White weatherboard, sandy dunes, bright sun. 35mm, high-key open exposure.
Adobe walls, cacti, dramatic sunset sky. 24mm, long shadows.
Glass cabin, moss, misty morning light. 35mm f/4, natural bokeh.
White cyclorama, three-point lighting. Canon R5, 100mm macro at f/11.
Golden hour, organic surfaces, soft bokeh. 85mm f/1.4 wide open.
Dark marble, rim lighting, deep contrast. 100mm macro, amber edge light.
Neutral grey, flat lighting, blueprint feel. Edge-to-edge sharpness.
Home setting, warm window light, editorial. 50mm f/1.8, magazine quality.
Colored gels, smoke, high-contrast cinematic. 85mm, spot lighting.
Matte grey, form study, no color. Soft diffuse shading, design focus.
Bold color blocking, hard shadows, pop-art. 35mm, fashion campaign style.
Traditional renderers need you to manually assign materials from a library. Sketch3D lets you describe materials in natural language — the AI interprets your intent and applies physically accurate textures.
Click any object, give it a name, and describe what it should look like. The annotation system auto-detects existing material properties (color, metalness, roughness) and includes them in the prompt for context.
Export to standard 3D formats compatible with Blender, Fusion 360, 3D printers, and more.
Wavefront OBJ — the universal 3D interchange format. Preserves n-gon faces and vertex normals. Open in any 3D application.
ASCII STL — the 3D printing standard. Triangulated mesh with face normals. Send directly to a slicer for printing.
Every stroke is preserved. Pick up right where you left off — today, tomorrow, from any device.
Every change is saved instantly. Close the tab, come back tomorrow — your design is exactly where you left it.
Save named snapshots you can roll back to anytime, from any device.
No sign-up. No download. Open the app and start drawing.
Open Sketch3D →