Optimize OBJ files online.
Up to 95% smaller.
Wavefront OBJ — compress and optimize for the web.
Processed locally in your browser.
What is OBJ?
OBJ (Wavefront) is one of the oldest and most universal 3D file formats. It stores geometry in a simple text format, with materials defined in a separate .mtl file. Almost every 3D application can read and write OBJ.
Why optimize OBJ?
OBJ files are text-based and inherently large. They consist of multiple files (.obj + .mtl + textures), making them fragile to share. Optimization converts OBJ to a single compressed GLB — bundling everything together with meshopt compression and texture optimization for dramatically smaller file sizes.
What gets optimized?
Trice converts OBJ (with .mtl and textures from ZIP) to GLB, applies meshopt compression, converts textures to WebP, resizes oversized textures, and welds duplicate vertices common in OBJ exports.
How it works
Drop your .obj file
Drag and drop or click to select your OBJ model.
Auto-optimize
Trice compresses meshes, optimizes textures, and deduplicates geometry — all in your browser.
Download optimized file
Preview with before/after comparison and export a production-ready optimized GLB.
Frequently asked questions
Yes. Include the .mtl file alongside the .obj in a ZIP archive. Materials and texture references are preserved and converted to PBR format, then optimized.
Huge gains. Text-based OBJ is extremely inefficient. Converting to binary GLB with meshopt compression typically achieves 80-95% file size reduction.
Yes. Meshopt compression handles high-poly meshes efficiently. Vertex welding removes duplicates common in OBJ exports. For very large models, Pro optimization handles files that would exceed browser memory.
Yes. Vertex colors in OBJ files are transferred to the GLB output and preserved through the optimization process.
Optimize other formats
More than an optimizer
Trice is a full 3D studio — optimize, edit materials, add hotspots, share and embed interactive 3D scenes on the web.
Open Studio