Blog

Notes from building Meshdiff

Updates on the diff engine, write-ups on how the comparison actually works, and the occasional bit of outside coverage.

.nojs-fallback { max-width: 640px; margin: 0 auto; padding: 64px 24px; font-family: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif; color: #e6e9ef; text-align: center; } .nojs-fallback h1 { font-family: "Space Grotesk", ui-sans-serif, system-ui, sans-serif; font-size: 28px; font-weight: 700; margin: 0 0 12px; } .nojs-fallback p { font-size: 15px; line-height: 1.6; color: #aab1c0; margin: 0 0 24px; } .nojs-fallback img { display: block; width: 100%; max-width: 560px; margin: 0 auto 24px; border-radius: 12px; border: 1px solid #2a2f3a; } .nojs-fallback a { display: inline-block; padding: 10px 20px; border-radius: 8px; background: #10b981; color: #022c22; font-weight: 600; text-decoration: none; margin: 0 6px; } .nojs-fallback a.secondary { background: transparent; border: 1px solid #3a4150; color: #e6e9ef; } Meshdiff's diff viewer showing added and removed geometry between two 3D model versions

Meshdiff's diff viewer showing added and removed geometry between two 3D model versions

Meshdiff compares two 3D model versions and shows what changed

Added material, removed material, and dimensional drift between two STL, 3MF, or OBJ files — computed as a voxel and surface-heatmap diff, entirely in your browser. The comparison tool itself needs JavaScript (it runs via WebAssembly and WebGL) to actually render a diff, so enable JavaScript to use it.

Read the docs See how it works