Buf3D Lite 3D Viewer STL & OBJ

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Everyone
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Content rating
Everyone
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About this app

View 3D and LDraw models with cinematic quality, build them step by step and convert them to other formats.

Free version with every feature: open a selection of catalogue models and your own STL, OBJ, PLY and other files up to 200,000 triangles. Buf3D+ unlocks the whole catalogue of nearly 15,000 models, your own LDraw files and models of any size.

STEP-BY-STEP BUILDING
• Parts list for every step, with colour and your progress in each batch
• A window with the next part, and the part highlighted on the model
• Portrait or landscape, and distraction-free full screen

IMAGE QUALITY
• Cinematic shader: realistic plastic, metal, rubber and pearl
• Rim light so dark parts keep their shape
• Accurate outline edges, skies and environment reflections

NEARLY 15,000 MODELS
• Catalogue with links to LDraw models, cars, motorbikes and much more
• Open your own files from the device or from a download
• LDraw parts library downloadable or from your own ZIP, offline

FORMATS
• Reads LDraw (DAT, LDR, MPD, L3B), LXF/LXFML, 3DS, LWO, OBJ, STL, PLY, OFF, DXF and PRJ
• Exports to OBJ, STL, 3DS, LWO, OFF and POV-Ray choosing the number of triangles, ideal for 3D printing
• Also exports a JPG image and the parts list

HUGE MODELS ON MODEST PHONES
Buf3D uses a version of the Progressive Fans technology developed by Antonio Cortés Carrillo: it builds and displays multiresolution models of millions of triangles out of core, adjusting the detail in real time.

Get the whole catalogue with Buf3D+: https://play.google.com/store/apps/details?id=com.cimplus.buf3dp
Free 3D viewer for STL, OBJ & LDraw with step-by-step building
Updated on
Oct 31, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

What’s new

First release of Buf3D Lite, the free version of Buf3D+: every feature, a selection of catalogue models and your own files up to 200,000 triangles.
Content rating
Everyone
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App support

About the developer
Antonio Cortés Carrillo
buf3d@buf3d.com
Av. del Carrilet, 168, Piso 2, Puerta 1 08901 L'Hospitalet de Llobregat Spain