Simplify Mesh in SketchUp

Decimify is a SketchUp extension for reducing polygon count on heavy imported models — Revit exports, photogrammetry scans, dense furniture and vegetation libraries — without losing groups, components, materials, or soft and smooth edges.

Get the Plugin →

The Problem

SketchUp's native tools aren't built for dense polygon meshes:

• A Revit model exported to SKP often lands at 2M+ faces.
• Imports from CAD and DCC tools can include high-res sculpts or photogrammetry.
• Furniture and vegetation from asset libraries are usually over-detailed for context models.

Dense meshes crash SketchUp, slow LayOut, and bloat file sizes. Decimify fixes this in place — no round-trip through an external tool.

How It Works

1. Select a Group or Component in your SketchUp model.
2. Open the Decimify panel from the Extensions menu.
3. Drag the slider to reduce polygon count. The preview updates live in an embedded 3D viewport.
4. Click "Update in Model." Decimify replaces the selection's geometry in place — position, materials, and edge properties preserved.

You can also load a GLB or STL file directly into the plugin, simplify it, and commit it into the current model as a new Component.

What It Preserves

Groups and components. Multi-level hierarchies survive the round-trip. Each component definition is simplified independently so reused instances stay linked.

Materials and textures. Texture-mapped faces keep their UV projection per face. Multi-material groups keep their material runs intact — no flattening to a single material.

Soft and smooth edges. Edge-level soft? and smooth? flags are captured from the source before extraction and re-applied on commit, so shading doesn't flatten after reduction.

Scene position. Transforms and insertion points stay exactly where you left them. Commits are single-step-undoable.

Quality

Runs on the same engine as the online version — silhouettes stay sharp, UV seams stay clean, and shading creases don't soften as the polygon count drops. The plugin UI is embedded in SketchUp via HtmlDialog; no external window, no round-trip through another app.

System Requirements

• SketchUp 2022 or newer.
• Windows or macOS.
• Internet connection — the plugin UI is served online so you always run the current version with no reinstall.

Install

1. Purchase a license from the Upgrade Plan section on the homepage.
2. Download the .rbz from your receipt.
3. In SketchUp: Extensions → Extension Manager → Install Extension — pick the .rbz.
4. Activate with your license key in the Decimify panel.

One license covers both the web tool and the SketchUp plugin. No subscription, no seat limits.

Typical Uses

• Reducing a Revit-imported context model for interior rendering.
• Trimming furniture library components before placing them in a scene.
• Decimating a photogrammetry site survey so SketchUp can navigate the view.
• Preparing a SketchUp model for export to real-time engines like Twinmotion or Unreal.
• Cleaning up a dense imported asset before LayOut.

Get the Plugin →