Meshma/SketchUp/Decimify

Decimify for SketchUp

Install as a SketchUp extension (SketchUp 2022+). Simplify a selected component in place, or load an external GLB/STL onto SketchUp's native Face entities — hierarchy, materials, and soft edges preserved.

Download for SketchUp

Plans

Free$0

• Personal projects, learning, open-source
• Full reduction range and features
• No license key needed, no seat limit
• Honor-based; free tier shows a small footer reminder

Premium

• Commercial license — studio, firm, paid client work
• Same feature set as Free
• Clean UI — no free-tier footer reminder
• One-time purchase, no subscription

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.

Personal vs commercial

Decimify is free for personal use — personal projects, learning, open-source contributions. No license key needed, full feature set, no seat limit.

Commercial use (studio, architecture firm, paid client work) requires a one-time commercial license. The plugin doesn't tech-enforce this — it's honor-based. Free tier shows a small footer reminder until a license is added; paying customers get a clean UI.

Install

1. Download decimify.rbz.
2. In SketchUp: Extensions → Extension Manager → Install Extension — pick the .rbz.
3. Restart SketchUp. A Decimify panel appears under the Extensions menu.
4. For commercial use, add your license key in the Decimify panel.

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.

Decimify is also available on

Decimify for Web App