Event designers & creative directors
Try the wide stage against the thrust, swap the Look, and settle it in the room at full scale instead of debating it over a deck.
Product overview
3D event design software that runs in your browser.
EVT3D is browser-based 3D design software built specifically for live events. Lay out the show at real-world dimensions — venue, stage, seating, LED walls, lighting and truss — then send your client a private link they can walk through on any device.
Free plan, no credit card. Nothing to install.
What is EVT3D?
EVT3D is a design-and-review workspace for the live-event industry. Designers build an event concept in 3D inside the room it will happen in, using builders that already speak production — stage decks, chair sections, truss, LED panels, drape, sightlines — and a library of event gear at true size.
The design renders in real time in 3D as you build it, and the finished design isn't a picture to be reinterpreted later. Clients and teammates open it as an interactive 3D walkthrough in their own browser, and production gets a spec sheet measured off the same model.
- Runs in
- A web browser — no desktop install
- Built for
- Live events: general sessions, galas, concerts, exhibits
- Clients need
- A link — no account, nothing to install
- Saves
- Automatically to the cloud as you work
- Built by
- Troy Halsey, author of Freelancer's Guide to Corporate Event Design (Focal Press, 2010)
Teams that have to sell the idea before they build it.
Scenic designers
Cycs, pipe-and-drape, tension fabric, bent pipe and custom scenic pieces as parametric geometry — with your graphics seen in context, at size.
Production companies
One shared design for scenic, video, lighting and account teams, with team libraries and reusable Assemblies that keep the house kit in every pitch.
AV teams
LED walls built panel by panel from real LED panel products, projection screens at true aspect ratio, and live I-MAG camera feeds routed onto them.
Technical directors
Capacity, sightlines and clearances checked against real dimensions, truss and chain hoists planned deliberately, and a spec sheet ready for pre-production.
Agencies & client-facing teams
Send a private link instead of presenting slides. Clients orbit the room, sit in any seat and switch Looks — no account, nothing to install.
From an empty room to a link the client can walk through.
Start with the room
Place a modeled venue from the catalog, import a scaled PDF or image floorplan as an underlay, or draw the room's walls, ceiling and airwalls yourself.
Build the stage and scenic
Stand up stage decks with stairs and edge treatments, then add cycs, drape, tension fabric and custom scenic pieces.
Add screens and LED
Build LED walls from real panel products — curved and irregular grids included — and drop in screens that carry video or a live I-MAG feed.
Seat the audience
Set hundreds of chairs in one pass with rows, rake, aisles, curves or banquet rounds. Every chair knows its row and seat, so you can sit in it and check the sightline.
Light and rig it
Run straight and circle truss with corner blocks and chain hoists, hang fixtures with real beams and live shadows, and wash drape and walls with color.
Share it
Send clients or teammates a private, revocable viewer link. They orbit, switch between your saved cameras, sit in seats and flip Looks in any browser — or open the same link in a VR headset.
What you can design with it.
Each group below is a set of purpose-built tools. The capabilities page covers every builder, shop and tool in detail.
Venue design
Browse a catalog of real conference rooms, ballrooms and exhibit halls, trace a real floorplan to scale, or model the room with finished walls, doors, one-click ceilings and airwalls.
Stage and scenic design
Parametric stage decks, step units, SEG and extrusion walls, cycs, drape, tension fabric and bent pipe — plus a Prop Shop for the custom piece the library doesn't carry.
Audience and seating
Grid, curved and banquet seating generated from one section setup, Chair View from any seat, and a viewing-range heatmap that shows who can actually see the screen.
LED walls and screens
Panel-accurate LED walls in irregular and curved layouts, single-surface projection and LCD screens, and video content or live I-MAG feeds on either.
Lighting
Spot, point, area and directional lights with live shadows, fixtures specced in the Light Shop, and simulated up- and downlight washes on drape, walls and cycs.
Rigging and truss
Straight truss lines and circle truss, corner blocks and chain hoists, laid out in a dedicated Rigging Mode so overhead structure is planned rather than eyeballed.
Production equipment library
Live-event props at real dimensions — staging, seating, truss, LED, scenic and lighting — free to browse. Paid plans also upload your own GLB, GLTF, OBJ and FBX models.
Interactive client sharing
Share Mode links open the design read-only in a browser: orbit, saved cameras, Chair View, Looks and captures, with no account for the viewer. Every link also opens in a VR headset browser.
Specifications and documentation
Every project carries a Spec Sheet that fills itself in from the live design — floorplan, product lists, video surfaces — with a 2D floorplan PDF on every plan. GLB and FBX scene export is in beta on Pro and Enterprise.
The design goes where the conversation is.
Nothing to install
The studio runs in a web browser. There is no desktop application to install or keep updated for the core design workflow.
Clients open a link
Reviewers don't need an account, a plugin or a 3D background. The link opens the design wherever they already are.
Projects live in the cloud
Every change autosaves as you work, so a project opens from any computer you sign in on — no files to email around.
Review on more devices
Viewer links open in desktop, tablet and phone browsers and in VR headset browsers. Designing itself is easiest on a computer with a mouse.
How EVT3D fits with CAD and 3D software you already use.
CAD tools such as AutoCAD and Vectorworks produce the engineered drawings a build depends on. General 3D tools such as SketchUp and 3ds Max can model and visualize almost anything. EVT3D doesn't replace either.
It covers the stretch in between — idea, proposal, client approval and pre-production — where speed and a shared picture matter most. Models built elsewhere come in as uploaded props (GLB, GLTF, OBJ or FBX on paid plans), and designs go back out as GLB or FBX scene exports, in beta on Pro and Enterprise.
- Not a CAD packageIt doesn't produce stamped or engineered plan sets.
- Not a lighting consoleIt visualizes lighting intent; there's no DMX.
- Not a general 3D modelerIt's built around event gear and rooms at real dimensions.
The fastest way to understand it is to build in it.
Start on the free plan, compare plans when you need more, or talk to the team about your event.